TIER - I SSC CHSL GENERAL SCIENCE

BIO MOLECULES
9. Which enzyme hydrolyzes protein?
1. Which of the following Vitamins are water
1. Zymase
soluble?
2. Maltase
1. Vitamin B and Vitamin C
3. Lipase
2. Vitamin A and Vitamin B 4. Pepsin
3. Vitamin C and Vitamin D
4. Vitamin A and Vitamin K
10. Which of the following foods has the highest
percentage of proteins per unit mass?
2. Which molecules are formed when fat is
1. Cow-milk
digested?
2. Egg
1. Glucose 3. Meat
2. Fatty acids and Glycerol
4. Fish
3. Alkaloids
4. Amino acids
11. Which of the following is the best source of
vitamin A?
3. Which of the following is popularly known as
1. Wheat
Vitamin-E?
2. Honey
1. Calciferol 3. Carrot
2. Cyanacobalamin
4. Peanut
3. Tocopherol
4. Phytonadione
12. Name the vitamin whose deficiency causes
excessive bleeding?
4. The colour of cow's milk is slightly yellow due to 1. Vitamin B
the presence of
2. Vitamin A
1. Xanthophylls
3. Vitamin C
2. Riboflavin 4. Vitamin K
3. Ribulose
4. Carotene
13. Cellulose comes under which type of
carbohydrate classification?
5. Vitamin _______ is an antioxidant and also
1. Monosaccharide
known as Tocopherol.
2. Disaccharide
1. D 3. Polysaccharide
2. E
4. None of these
3. K
4. C
14. Which of the following is the food element that
does not give energy to the body?
6. Which of the following is not a part of the
1. Carbohydrates
nucleotide of DNA? 2. Proteins
1. Nitrogenous base 3. Minerals
2. Deoxyribose sugar
4. Fats
3. Phosphoric acid
4. Amino acid
15. A nitrogenous base linked to a pentose sugar is
known as
7. The difference between sugar molecules of
1. Nucleotide
DNA and RNA is- 2. Nucleoside
1. Absence of nitrogen at 3-C
3. Polynucleotide
2. Presence of nitrogen at 2-C
4. Ribose
3. Absence of oxygen at 2-C
4. Presence of oxygen at 3-C

8. Vitamin B12 is a coordination compound of

_______.
1. Iron
2. Cobalt
3. Platinum
4. Copper
TIER - II SSC CHSL GENERAL SCIENCE

BIO MOLECULES green leafy vegetables, are source of this

Vitamin.
1. _______ (X) is a vitamin which is needed for
Which vitamin is being referred in the above
absorbtion of _______ (Y).
statement?
X and Y are:
1. Vitamin E
1. Vitamin B, Calcium
2. Vitamin B
2. Vitamin C, Iron 3. Vitamin K
3. Vitamin A, Calcium
4. Vitamin C
4. Vitamin A, Iron
8. Which of the following is an example of a
2. Which disease is caused by the deficiency of
primary metabolite?
Vitamin 'A'? 1. Codeine
A. Beri-Beri
2. Anthocyanin
B. Scurvy
3. Carotenoid
C. Night Blindness 4. Galactose
D. Rickets
1. B
9. Which of the following enzymes is found in the
2. A
saliva of the human body which breaks down
3. D starch into simple sugar?
4. C
1. Amylase
2. Trypsin
3. Match Column - A with Column - B
3. Pepsin
Column-A (Vitamin) Alternative name 4. Rennin
I. Vitamin A A. Ascorbic acid
II. Vitamin B12 B. Retinol 10. Which type of carbohydrate CANNOT be
III. Vitamin C C. Cobalamin broken down by the GI tract, does not provide
IV. Vitamin D D. Ergocalciferol energy, but helps the body get rid of wastes
1. I -B, II - A, III - C, IV - D and keeps the intestinal tract healthy?
2. I -A, II - B, III - C, IV - D 1. Fibre
3. I -C, II - B, III - D, IV - A 2. Starch
4. I -B, II - C, III - A, IV - D 3. Sugar
4. Glycogen
4. In what form is the energy derived from the food
that we eat is stored in our body? 11. Which is a major essential lipophilic (fat-
1. Maltose soluble) vitamin required for the protection of
2. Glucose cell membranes and the formation of red blood
3. Glycogen cells (RBCs)?
4. Starch 1. Vitamin A
2. Vitamin C
5. Which of the following is NOT a complete 3. Vitamin D
protein source? 4. Vitamin E
1. Nuts
2. Dairy food 12. Which nutrient should be high in the diet of
3. Red meat pregnant women, lactating women or infants or
4. Eggs adolescents?
1. Vitamin
6. Which of the following pairs is correctly 2. Protein
matched? 3. Fat
1. Vitamin A - Lemon 4. Carbohydrates
2. Vitamin B - Lemon
3. Vitamin A - Lamb liver 13. The nutrients found in endosperm are _______.
4. Vitamin C - Green vegetables (A) Starch
(B) Protein
7. This vitamin is fat soluble, helps in clotting of (C) Fat
blood. Cabbage, cauliflower, spinach, and other (D) Mineral salts
1. A, B, C, D
TIER - II SSC CHSL GENERAL SCIENCE

2. A, B, C
3. B, C, D
4. A, C, D

14. Match list - I with list - II and select the correct

code from the given code.
List - I List - Il
A. Egg 1. Gluten
B. Milk 2. Avidin
C. Wheat 3. Casein
D. Meat 4. Collagen
1. A-1, B-2, C-3, D-4
2. A-2, B-3, C-1, D-4
3. A-4, B-1, C-2, D-3
4. A-3, B-2, C-4, D-1

15. Select the INCORRECT statement about the

nutrients.
1. Vitamins help in protecting our body against
diseases
2. Proteins are needed for the growth and
repair of our body
3. Fats give less energy as compared to the
same amount of carbohydrates
4. Carbohydrates and Fats both give us
energy
TIER - I SSC CHSL GENERAL SCIENCE

BIOLOGY IN EVERYDAY LIFE 2. Rhizobium

3. Pneumococcus
1. Which of the following foods has the highest
4. Lactobacillus
percentage of proteins per unit mass?
1. Fish
9. Organisms such as Fungi & Bacteria are used
2. Cow-milk
to destroy weeds. Such biological agents are
3. Egg called
4. Meat
1. Fungicides
2. Bio weedicides
2. Khushi's mother advised him to not sleep under
3. Herbicides
the trees at night as trees release _______ at
4. Insecticides
night.
1. Methane
10. Some juice packages carry the warning " Don't
2. Carbon Dioxide
eat/drink if the package is swollen" The process
3. Nitrogen
that leads to swelling is
4. Oxygen 1. Fermentation
2. Pasteurization
3. Which of the following fungus is used in baking
3. Preservation
industry? 4. Dehydration
1. Morels
2. Black mold
11. Which of the following process prevents the
3. Yeast
growth of microbes in milk?
4. Mushroom
1. Anaerobic respiration
2. Pasteurisation
4. Decomposition of organic nitrogen of dead
3. Cellular respiration
plants and animals into ammonia is called:
4. Fermentation
1. Ammonification
2. Nitrification
12. The branch of horticulture which deals with the
3. Nitrogen fixation production, storage, processing and marketing
4. Nitrate assimilation
of vegetables is called?
1. Pomology
5. Common bacteria used in genetic engineering
2. Agronomy
İs- 3. Olericulture
1. E. Coli
4. Apiculture
2. Spirillum
3. Rhizobium
13. Which of the following is used for the
4. Diplococcus
preservation of food grains?
1. Vinegar
6. Nuts, vegetable oil, and fish are good source of 2. Sodium Chloride
which of the following?
3. Potassium Permanganate
1. Carbohydrates 4. Sodium Benzoate
2. Minerals
3. Healthy fats
14. Which one of the following solids is used as a
4. Proteins
drying agent in bottles containing medicinal
tablets?
7. Medicines manufactured by growing specific 1. Calcium carbonate
microorganism & used to cure a variety of
2. Sodium hydroxide
diseases is
3. Quicklime
1. Antiseptic 4. Silica gel
2. Antigens
3. Antibodies 15. Which of the following can bring down the body
4. Antibiotics
temperature?
1. Aspirin
8. The bacteria found in the roots of plants, which
2. Chloroquine
can convert atmospheric nitrogen to a soluble
3. Quinine
form that can be utilized by the plants İs 4. Penicillin
1. Streptococcus
TIER - II SSC CHSL GENERAL SCIENCE

BIOLOGY IN EVERYDAY LIFE found naturally in some grains, including wheat,

barley, and rye?
1. At high doses, _______ kills cancer cells or
1. Prolamin
slows their growth by damaging their DNA.
2. Albumin
Cancer cells whose DNA is damaged beyond 3. Gluten
repair stop dividing or die. When the damaged
4. Glycinin
cells die, they are broken down and removed by
the body.
8. Which of the following algae are rich in proteins
1. Chemotherapy
and are used as food supplements by space
2. Radiation Therapy
travelers?
3. Surgery
A) Spirulina
4. Physiotherapy B) Spirogyra
C) Chlorella
2. Select from the following a species of honey
D) Funaria
bee which has high honey collection capacity
1. B and C
and is commonly used for commercial honey
2. A and B
production: 3. A and C
1. Apis Cerana Indica
4. B and D
2. Apis Dorsata
3. Apis Florae
9. On the basis of the type of silk, it can be divided
4. Apis Mellifera
into _______ parts.
(A) Original
3. Which is the only streptococcal species widely
(B) Mulberry
used in food fermentation, especially for yogurt (C) Synthetic
manufacturing?
(D) Non-Mulberry
1. Streptococcus Pyogenes 1. AC
2. Streptococcus Thermophilus
2. ABC
3. Streptococcus Viridans
3. ACD
4. Streptococcus Agalactiae 4. BCD
4. Which of the following pair type of nutrient
10. Over enrichment of which nutrient is the
nutrients is correct?
principal cause of Eutrophication?
I. Macronutrient - Iron
1. Lead
II. Micronutrient - Calcium 2. Zinc
1. Only I
3. Sulphur
2. Both I and II 4. Phosphorus
3. Neither I nor II
4. Only II
11. A few drops of lodine solution when added to
an aqueous solution of cooked rice turn blue-
5. Which is a complex starch derived from plants
black. This indicates that rice contains.
used to preserve fruit products, such as jams
1. Proteins
and jellies, and gummy candies?
2. Vitamins
1. Lignin
3. Minerals
2. Lecithin 4. Starch
3. Pectin
4. Olein 12. What organic compounds are found in the cells
of apples, and when these are exposed to
6. Which one of the following will be resulted when
oxygen in the air, for example through slicing,
an animal cell is surrounded by a medium with
the oxygen causes reaction?
lower concentration of water? 1. Phenols
1. Cell will lose water
2. Carboxylic acid
2. No change in movement of water
3. Resorcinol
3. Cell will gain water
4. Cyclohexanol
4. Cell will swell up
13. Consider the following statements:
7. Which protein acts like a binder, holding food A. The first antibiotic discovered was Penicillin.
together and adding a 'stretch' property, and is
TIER - II SSC CHSL GENERAL SCIENCE

B. Penicillin is obtained from the bacterium

Penicillium notatum.
C. Penicillin was discovered by Alexander
Fleming.
The correct statements are:
1. A and B
2. A and C
3. B and C
4. A, B and C

14. Which of the following is a collection of methods

that allows correction of a gene defect that has
been diagnosed in a child or embryo?
1. Molecular Diagnosis
2. Gene Technology
3. Gene Therapy
4. Deformative sequencing

15. Select the incorrect statement regarding

inbreeding.
1. Continued inbreeding reduces fertility and
leads to inbreeding depression.
2. Inbreeding depression cannot be
overcome by Out-crossing.
3. Inbreeding helps in elimination of
deleterious alleles from the population.
4. Inbreeding is necessary to evolve a pure-
line in any animal.
TIER - I SSC CHSL GENERAL SCIENCE

BOTANY 9. Which of the following is the reason for red rot

in sugarcane?
1. The Xylem in plants is responsible for 1. Fungal infection
transporting -
2. Bacterial infection.
1. Water
3. Viral infection
2. Oxygen
4. High temperature
3. Amino Acid
4. Food
10. Which of the following is not an example of the
group algae?
2. Which of the following is an insectivorous plant?
1. Fucus
1. Nyctanthes
2. Porphyra
2. Nelumbo 3. Sphagnum
3. Nicotiana
4. Polysiphonia
4. Nepenthes
11. Which metal present in the pigment
3. Plant respiration occurs in _______.
chlorophyll?
1. Root
1. Iron
2. Leaves
2. Copper
3. Stem 3. Cobalt
4. All of the above
4. Magnesium
4. Which of the following processes keeps plant
12. Which of the following is known as "Amphibians
cool?
of plant kingdom"?
1. Photosynthesis 1. Pteridophytes
2. Transpiration
2. Gymnosperm
3. Tropisms
3. Angiosperm
4. Germination 4. Bryophytes
5. Which of the following organisms show parasitic 13. Which among the following plants disperse their
mode of nutrition?
seeds by water?
1. Amoeba 1. Coconut
2. Bread Mold
2. Maple
3. Nostoc
3. Drumstick
4. Cuscuta
4. Maize
6. Which of the following is not a subgroup of plant
14. Which one of the following plants does not
kingdom?
reproduce by Spore formation?
1. Thallophyta
1. Algae
2. Angiosperms 2. Fungi
3. Pteridophyta 3. Gymnosperms
4. Hemichordata
4. Ferns
7. Which gas is required for photosynthesis in
15. Which of the following is an example of a total
plants?
root parasite?
1. Nitrogen 1. Orobanche
2. Oxygen 2. Cuscuta
3. Carbon dioxide
3. Loranthus
4. Hydrogen
4. Cyprus
8. Which of the following plants does not produce
its offspring through asexual reproduction?
1. Sugarcane
2. Potato
3. Banana
4. Rose
TIER - II SSC CHSL GENERAL SCIENCE

BOTANY 1. A only
2. B and C only
1. The function of leghaemoglobin in the root
3. C only
nodules of legume plant is: 4. A, B and C
1. Nodule differentiation
2. Expression of nif gene
8. Which of the following nutrient is essential for
3. Oxygen removal
germination of seeds and used for formation of
4. Inhibition of nitrogenase activity
fruit and nut?
1. Magnesium
2. Herbicides which are applied after weed
2. Potassium
emergence are called _______.
3. Nitrogen
1. Pre-emergence herbicides 4. Zinc
2. Post-emergence herbicides
3. Pre-planting herbicides
9. What is the percentage of Photo synthetically
4. Post planting herbicide
Active Radiation (PAR) that is captured by the
plants?
3. Which of the following parts of a flowering plant 1. 2-10%
is not diploid?
2. 5-10%
1. Egg
3. 2-15%
2. Corolla
4. 2-5%
3. Ovary
4. Zygote
10. Which of the following is a plant tissue?
I. Meristematic tissue
4. Xylem is a type of complex tissue in plants for II. Permanent tissue
upward conduction of water. Which one of the
1. Only II
following xylem tissues consists of living cells? 2. Both I and II
1. Tracheid
3. Neither I nor II
2. Vessel
4. Only I
3. Xylem parenchyma
4. Xylem fibre
11. In an experiment, a student removed the tip of a
sugarcane plant. It was observed that the plant
5. Among the following statements which is/are
is still growing in length. It may be due to the
correct?
presence of
1. Plants convert energy from sunlight into food 1. Apical meristem
stored as carbohydrates
2. Cambium
2. Plants have chlorophyll 3. Intercalary meristem
3. Plant cells do not have cell walls
4. Lateral meristem
1. Only 1 is correct
2. Only 1 and 2 are correct
12. Which among the following statements with
3. Only 1 and 3 are correct
reference to the modification in root is correct?
4. All are correct
1. The modified root for food storage is ginger.
2. The root nodules is a symbiont of root and
6. Plants that do not have well-differentiated body
fugi.
design fall in this group. The plants in this group
3. The roots in certain plants are modified to
are commonly called algae. These plants are
perform photosynthesis.
predominantly aquatic. 4. The roots of plants growing in a swamp
1. Bryophyta help in gaseous exchange.
2. Angiosperms
3. Thallophyta
13. The presence of which one of the following
4. Pteridophyta
molecules in leaves indicates the occurrence of
the process of photosynthesis?
7. Which of the following is/are Plant hormones?
1. Glucose
A. Auxins
2. Cellulose
B. Gibberellins 3. Starch
C. Cytokinins
4. Sucrose
Select the correct answer using the code given
below.
TIER - II SSC CHSL GENERAL SCIENCE

14. Which of the following family of flowering plants

is Zygomorphic (meaning a flower can be cut
into two equal halves only through a radius),
bisexual and complete and whose calyx
consists of five sepals?
1. Solanaceae Family
2. Fabaceae Family
3. Liliaceae Family
4. Poaceae Family

15. Fusion of two gametes dissimilar in size, as in

species of Eudorina is termed as _______.
1. Anisogamous
2. Oogamous
3. Zoogamous
4. Isogamous
TIER - I SSC CHSL GENERAL SCIENCE

CELL 9. _______ is a group of cells similar in structure

and function.
1. Which of the following organisms does not fit
1. Organ system
into the Cell Theory?
2. Organ
1. Virus
3. Tissue
2. Plants
4. Molecule
3. Fungi
4. Bacteria
10. Which one of the following is not part of the
animal cell?
2. _______ is known as the energy currency of
1. Cell Membrane
the cell.
2. Nucleus
1. DNA 3. Cytoplasm
2. ADP 4. Cell Wall
3. ATP
4. RNA
11. There are _______ main types of cell division in
humans.
3. Which of the following are also known as
1. 4
'Suicide bags' of a cell- 2. 2
1. Plastids 3. 3
2. Ribosomes
4. 5
3. Lysosomes
4. Mitochondria
12. Identify an option that does NOT represent
prokaryotic cells.
4. Which one of the following is called the 1. Mycoplasma
'digestive bag' in the cell?
2. Blue-green alga
1. Golgi body 3. Sperm
2. Mitochondria
4. Pleuropneumonia - like organism
3. Ribosome
4. Lysosome
13. Which of the following options is NOT correct
about plant cells?
5. The brain of the cell
1. Cell wall of a plant cell is made up of
1. Nucleolus
cellulose.
2. Nucleus
2. The plant cells cannot divide by mitosis.
3. Reaper 3. A plant cell usually contains a large vacuole.
4. None of the above
4. Generally, all plant cells contain chloroplast.
6. Which of the following is the smallest RNA?
14. Two organelles that have their own genetic
1. tRNA
material are
2. Ribosome RNA 1. Golgi bodies & Lysosomes
3. Chromosomes RNA
2. Vacuoles & plastids
4. mRNA 3. Nucleus & mitochondrial
4. Cell wall & cell membrane
7. Which of the following cell organelle contain
hydrolytic enzymes?
15. The number of chromosomes present in a
1. Nucleus
normal human cell is
2. Golgi complex 1. 44
3. Lysosomes
2. 46
4. Mitochondria
3. 48
4. 50
8. Which among the following cell organelles has
its own genetic material and Ribosomes?
1. Mitochondria
2. Golgi Bodies
3. Nucleus
4. Endoplasmic Reticulum
TIER - II SSC CHSL GENERAL SCIENCE

CELL 4. Mitosis takes place in Germ cells

1. Which is the most or abundant material of the
7. Match Column -A with Column-B
middle lamella?
Column - A Column - B
1. Hemicellulose
(Organelle) (Function)
2. Cellulose
I. Mitochondria A. Protein
3. Lignin
synthesis
4. Pectin
II. Ribosomes B. Regulation of
activity of a cell
2. What is the name of the process in
spermatogenesis where a diploid germ cell III. Nucleus C. Digestive
undergoes meiotic division to form two haploid system of a cell
spermatids? IV. Lysosomes D. Energy
1. Mitosis generation
2. Meiosis I 1. (I - C), (II - A), (III - D), (IV - B)
3. Meiosis II 2. (I - B), (II - A), (III - C), (IV - D)
4. Cytokinesis 3. (I - A), (II - B), (III - C), (IV - D)
4. (I - D), (II - A), (III - B), (IV - C)
3. DNA replicates itself during which of the
following phase of cell cycle? 8. The proteins and lipids which are essential for
1. S-phase building the cell membrane are manufactured
2. M-phase by
3. G2 Phase 1. Mitochondria
4. G1 phase 2. Plasma membrane
3. Golgi apparatus
4. Which of the following statements is/are not 4. Rough endoplasmic reticulum
correct regarding the Endoplasmic Reticulum?
1. The Rough Endoplasmic Reticulum is the 9. Which of these options is not a function of
site of fat synthesis. Ribosomes?
2. The Smooth Endoplasmic Reticulum is the (I) It helps in manufacture of protein molecules
site of protein synthesis. (II) It helps in manufacture of enzymes
Select the correct answer using the codes given (III) It helps in manufacture of hormones
below: (IV) It helps in manufacture of starch molecules
1. 1 only 1. (I) and (II)
2. 2 only 2. (II) and (III)
3. Both 1 and 2 3. (III) and (IV)
4. Neither 1 nor 2 4. (IV) and (I)

5. Consider the following statements: 10. The organisms with cells having nuclear
1. Cell organelles are enclosed with a material without nuclear membrane are called
membrane. as which of the following?
2. Prokaryotes lack cell organelles. 1. Eukaryotes
3. Virus lacks membrane. 2. Vacuoles
Which of the statements given above are 3. Prokaryotes
correct? 4. Organelles
1. 1 and 3 only
2. 2 and 3 only 11. Which of the following is NOT the correct
3. 1 and 2 only match?
4. 1, 2 and 3 1. Lysosomes- Christian de Duve
2. Chloroplast- Altman
6. Which of the following is TRUE about the 3. Mitochondria- Albert Von Kolliker
process of Mitosis? 4. Ribosome- George E Palade
1. Number of chromosomes remains same
in Mitosis 12. Electron microscopic studies of eukaryotic cells
2. Sexual type of reproduction occurs in reveal the presence of a network of tiny tubular
Mitosis structures scattered in the cytoplasm that is
3. Chromosome pairing occurs in Mitosis called the _______.
TIER - II SSC CHSL GENERAL SCIENCE

1. Golgi apparatus
2. Peroxisomes
3. Endoplasmic Reticulum
4. Mitochondria

13. Match the columns.

Column - A Column - B
I. Cell wall of A. Fungal cell
cellulose
II. Desmosomes B. Bacteria
III. Cell wall of C. Animal cells
Peptidoglycan
IV. Cell wall of chitin D. Plant cell
1. I - B, II - C, III - D, IV - A
2. I - C, II - D, III - B, IV - A
3. I - D, II - C, III - A, IV - B
4. I - D, II - C, III - B, IV - A

14. Which cell organelle is an overlapping

membranous sac with ER-like thickness that
helps in processing and packaging protein and
lipid molecules, especially stable proteins?
1. Lysosome
2. Golgi apparatus
3. Mitochondria
4. Plastid

15. Which membrane-bound cell organelle

consisting of a small sac-like structure
surrounded by single membranes serves as the
cell's digestive system, allowing material taken
from outside the cell to degrade and digest
obsolete components of the cell?
1. Lysosome
2. Peroxisome
3. Glyoxysomes
4. Polysome
TIER - I SSC CHSL GENERAL SCIENCE

HUMAN BODY 1 1. Liver

2. Bone marrow
1. Leukemia is characterised by abnormal
3. Spleen
increase of which of the following cells?
4. Pancreas
1. Plasma
2. White blood cells
10. The excretory unit in human is
3. Red blood cells 1. Urethra
4. None of these 2. Nephron
3. Nephridia
2. Which of the below mentioned human organs
4. Neurons
can regrow after damage in adults?
1. Gall bladder 11. Which one of the following is not a female
2. Liver
reproductive organ in humans?
3. Kidney
1. Ovaries
4. Lung
2. Oviducts
3. Cervix
3. The female gametes in human is called 4. Stamen
1. Sperm
2. Ova
12. The largest gland in the human body is
3. Embryo
1. Spleen
4. Zygote
2. Kidney
3. Pancreas
4. The outer part of a human ear is called 4. Liver
1. Hammer
2. Cochlea
13. Urea is synthesized from amino acids in the
3. Pinna
_______.
4. Ear drum
1. Stomach
2. Kidney
5. Which one of the following is essential for 3. Urinary bladder
thyroid gland to make thyroxin? 4. Liver
1. NaCl
2. KCI
14. The gap between two neurons is called
3. Cholesterol 1. Synapse
4. Iodine
2. Dendron
3. Synthesise
6. In humans the neck is joined by the head by
4. Axon
which of the following joints?
1. Ball and socket joint
15. Which part of eye controls size of a pupil?
2. Hinge joint 1. Cornea
3. Pivotal joint
2. Iris
4. Fixed joint
3. Retina
4. Eye Lens
7. Which of the following is essential to form
haemoglobin in blood?
1. Fats
2. Iron
3. Calcium
4. Protein

8. Which of the following is not a part of the brain?

1. Fore brain
2. Hind brain
3. Mid brain
4. Long brain

9. In which organ of the human body are the

lymphocytes formed?
TIER - I SSC CHSL GENERAL SCIENCE

HUMAN BODY 2 2. Eggs

3. Grass
1. The opening of urinary bladder is known as-
4. Chicken
1. Nephridia
2. Ureter
10. In human beings the posture and balance of the
3. Urethra
body is controlled by
4. Nephron 1. Cerebellum
2. Cerebrum
2. Covering of the lungs is called:
3. Pons
1. Pericardium
4. Medulla
2. Pleura
3. Perichondrium 11. The part of alimentary canal which receives bile
4. Peritoneum
from the liver is
1. Oesophagus
3. Which of the following is known as 'Natural
2. Stomach
pacemaker of the heart'?
3. Large intestine
1. AV node 4. Small intestine
2. Auricle
3. Bundle of HIS 12. The menstrual flow lasts for about _______ and
4. SA node
marks the end of the menstrual cycle.
1. 2 to 7 days
4. The part of the brain from which spinal cord
2. 10 to 12 days
originates is:
3. 15 to 20 days
1. Pons 4. 20 to 24 days
2. Cerebrum
3. Medulla oblongata
13. The set of teeth which falls off between the age
4. Cerebellum
of six to eight years of a child are called
1. Permanent teeth
5. Which of the following organ in human is called 2. Premolar teeth
"The graveyard of RBC"? 3. Milk teeth
1. Liver
4. Molar teeth
2. Pancreas
3. Gall bladder
14. The tube that carries sperm to the urethra is
4. Spleen
called
1. Vas Deferens
6. The image formed on the retina of the human
2. Testes
eye is _______.
3. Epididymis
1. Virtual and Inverted
4. Scrotum
2. Real and Inverted
3. Real and Erect
15. The hormone that maintains correct salt
4. Virtual and Erect
balance in the blood is
1. Insulin
7. The function of haemoglobin in the body is 2. Adrenalin
1. Transport of oxygen
3. Oestrogen
2. Destruction of bacteria
4. Thyroxine
3. Prevention of anemia
4. Utilisation of iron

8. What is the first part of the large intestine?

1. Villey
2. Cecum
3. Medulla
4. Klebsiella

9. Which food requires a longer small intestine to

digest food?
1. Lamb
TIER - II SSC CHSL GENERAL SCIENCE

HUMAN BODY 1 2. Myopia

3. Cataract
1. Which of the following hormones is secreted by
4. Hypertension
the Beta cell of Islet of Langerhans of
Pancreas?
7. Which one of the following chromosomes has a
1. Adrenalin
mismatched pair in a normal human male?
2. Glucagan 1. Chromosome number 21
3. Insulin
2. Chromosome number 18
4. Aldosterone 3. X - chromosome
4. Chromosome number 13
2. Match list-l with list-ll and select the correct
answer using the code given below: 8. Identify the wrong statement about the human
List-I (Diseases) List -II (Factors) heart from the option given below.
1. Virus (A) Peptic ulcers 1. Aorta arises from right ventricle.
2. Protozoa (B) Dengue 2. The opening between the left atrium and left
3. Worm (C) Elephant Foot ventricle is guarded by a bicuspid valve.
4. Bacteria (D) Malaria 3. Right ventricle receives deoxygenated
1. A - 4, B - 2, C - 3, D - 1 blood.
2. A - 3, B - 4, C - 2, D - 1 4. Sino-atrial node is present in right atrium.
3. A - 4, B - 1, C - 3, D - 2
4. A - 2, B - 3, C - 4, D - 1 9. Which blood vessels carry oxygenated blood
from heart to other parts of the body?
3. The blood pressure of a normal human being is 1. Veins
found to be 120/80 mmHg. These 'numbers' 2. Arteries
represent the blood pressure at 3. Capillaries
1. Ventricular contraction and ventricular 4. None of these
relaxation, respectively
2. Ventricular relaxation and ventricular 10. The _______ is at its largest in children, but
contraction, respectively with the onset of puberty, it eventually shrinks
3. Auricular contraction and auricular and gets replaced by fat.
relaxation, respectively 1. Thymus
4. Ventricular contraction and auricular 2. Hypothalamus
contraction, respectively 3. Pituitary gland
4. Parathyroid gland
4. If the red blood cells (RBCs) of human blood
are isolated and are diluted in normal saline (an 11. Match the terms of Column (A) with those of
isotonic solution to blood), what will happen to Column (A) Column (B)
the RBCs? A. Olfactory receptors (I) Tongue
1. The RBCs will swell B. Thermo receptors (II) Eye
2. The RBCs will swell and burst (temperature receptors)
3. The RBCs will shrink C. Gustatoreceptors (III) Nose
4. No change in the diameters of the RBCs D. Photoreceptors (IV) Skin
1. A - II, B - I, C - II, D - IV
5. Which of the following pairs of 'disease 2. A - III, B - IV, C - I, D - II
duration' is correct?
3. A - IV, B - II, C - III, D - I
I. Acute long duration 4. A - I, B - III, C - IV, D - II
II. Chronic - short time
1. Neither I nor II
12. Which of the following organs is not controlled
2. Both I and II
by the Autonomous Nervous System?
3. Only II 1. Glands
4. Only I 2. Heart
3. Eye
6. The condition in which the crystalline lens of a
4. Uterus
human being at old age becomes milky and
cloudy is called _______.
1. Pressbyopia
TIER - II SSC CHSL GENERAL SCIENCE

13. Which of the following hormones helps the body

to adjust to stress when one is very angry,
embarrassed or worried?
1. Adrenalin
2. Progesterone
3. Melatonin
4. Insulin

14. The bile juice secreted by the liver and stored in

the gall bladder mainly helps in the breakdown
of _______.
1. Vitamins
2. Proteins
3. Minerals
4. Fats

15. Which cell organelles are tubular in form and

lacks Ribosomes and are associated with the
production and metabolism of fats and steroid
hormones?
1. Lysosome
2. Smooth endoplasmic reticulum
3. Vacuoles
4. Cytosol
TIER - II SSC CHSL GENERAL SCIENCE

HUMAN BODY 2 1. Tendon break

2. Ligament break
1. The inner lining of stomach is protected by one
3. Skeletal muscle break
of the following from hydrochloric acid. Choose
4. Areolar tissue break
the correct one
1. Pepsin
7. Choose the correct sequence that represents a
2. Mucus
human excretory system:
3. Salivary amylase
1. Kidneys → Ureter → Urethra → Urinary
4. Bile
Bladder
2. Ureter → Kidneys → Urinary Bladder →
2. Sometimes when we do heavy exercise,
Urethra
anaerobic respiration takes place in our muscle 3. Kidneys → Ureter → Urinary Bladder →
cells. What is produced during this process? Urethra
1. Alcohol and lactic acid
4. Ureter → Urinary Bladder → Kidneys →
2. Alcohol and CO2
Urethra
3. Lactic acid and CO2
4. Lactic acid only
8. Consider the following statements:
1. Ball and socket joint are located at the hip.
3. Match the organs in Column I with the words 2. Pivotal joint is the joint between the skull and
listed in Column II.
upper jaw.
Column I Column II Select the correct answer using the code given
(A) Rectum (I) Mucous below.
(B) Gall bladder (II) Villi 1. 1 only
(C) Stomach (III) Taste buds 2. 2 only
(D) Tongue (IV) Faeces 3. Both 1 and 2
(E) Small intestine (V) Bile Juice 4. Neither 1 nor 2
1. (A - IV), (B - V), (C - I), (D - III), (E - II)
2. (A - V), (B - III), (C - II), (D - IV), (E - I) 9. Which is the correct sequence of the
3. (A - II), (B - V), (C - I), (D - III), (E - IV) components of a reflex arc?
4. (A - IV), (B - I), (C - II), (D - V), (E - III) 1. Receptors → Muscles → Sensory Neuron
→ Motor Neuron → Spinal Cord
4. All of the following are a part of the fallopian 2. Receptors → Motor Neuron → Spinal Cord
tube in the female reproductive system of → Sensory Neuron → Muscle
humans, except 3. Receptors → Spinal Cord → Sensory
1. Ampulla. Neuron → Motor Neuron → Muscle
2. Infundibulum. 4. Receptors → Sensory Neuron → Spinal
3. Cervix. Cord → Motor Neuron → Muscle
4. Isthmus.
10. While doing work and running, you move your
5. Match the following list I (disease) with list II organs like hands, legs etc. Which among the
(Pathogen). following is correct?
List I List II 1. Smooth muscles contract and pull the
A. Anthrax (I) Heliobacter pylori ligament to move the bones
2. Smooth muscles contract and pull the
B. Cholera (II) Vibrio cholera
tendons to move the bones
C. Dental caries (III) Streptococcus
3. Skeletal muscles contract and pull the
D. Peptic ulcer (IV) Bacillus anthracis ligament to move the bones
1. A - IV, B - II, C - III, D - I 4. Skeletal muscles contract and pull the
2. A - I, B - II, C - III, D - IV tendon to move the bones
3. A - II, B - I, C - IV, D - III
4. A - IV, B - I, C - II, D - III 11. Choose the correct path of urine in our body
1. Kidney → Ureter → Urethra → Urinary
6. While cycling, a student met with an accident in Bladder
which two long bones of his right hand were 2. Kidney → Urinary Bladder → Urethra →
dislocated. The possible reason for this Ureter
dislocation is
TIER - II SSC CHSL GENERAL SCIENCE

3. Kidney → Ureter → Urinary Bladder →

Urethra
4. Urinary Bladder → Kidney → Ureter →
Urethra

12. Which is the correct sequence of air passage

during inhalation?
1. Nostrils → Larynx → Pharynx → Trachea →
Lungs
2. Nasal Passage → Trachea → Pharynx →
Larynx → Alveoli
3. Larynx → Nostrils → Pharynx → Lungs
4. Nostrils → Pharynx → Larynx → Trachea
→ Alveoli

13. A) I provide shape to the human body.

B) I protect delicate parts like heart brain etc.
What am I?
1. Cartilage
2. Bone
3. Skeleton
4. Muscle

14. The thickness of the lens in the eye is altered

enabling the eye to see far & near objects
clearly by
1. Cornea
2. Ciliary muscles
3. Pupil
4. Iris

15. Which muscles act involuntarily?

(I) Striated muscles
(II) Smooth muscles
(III) Cardiac muscles
(IV) Skeletal muscles
1. (I) and (II)
2. (II) and (III)
3. (III) and (IV)
4. (I) and (IV)
TIER - I SSC CHSL GENERAL SCIENCE

HUMAN DISEASE
9. AIDS is the most severe phase of HIV infection.
1. Which of the following is the main cause for
It is a syndrome caused by a _______.
transmission of the Hepatitis virus?
1. Bacteria
1. Drinking contaminated water
2. Fungi
2. All of the given options 3. Virus
3. Sharing drug needles
4. Prions
4. The bite of a mosquito
10. Which of the following is a disease caused by
2. Example of microbial disease which can be
Vitamin B-1 deficiency, also known as thiamine
transmitted by sexual contact is -
deficiency?
1. Cholera 1. Cheilosis
2. Syphilis
2. Beri - Beri
3. Anthrax
3. Pellagra
4. Tuberculosis
4. Xerophthalmia
3. Chikungunya is an infection caused by _______
11. Which of the following is a communicable
mosquito.
disease?
1. Culex 1. Measles
2. Mansonia
2. Diabetes
3. Aedes
3. Scurvy
4. Anopheles
4. Asthma
4. Which among the following is a bacterial 12. Which of the following is not a bacteria related
disease?
disease?
1. Rabies
1. Pneumonia
2. Leprosy
2. Typhoid
3. Malaria 3. Influenza
4. Ebola 4. Diphtheria
5. You may suffer from which type of disease, if
13. Which one of the following diseases causes
you live in a poorly ventilated and overcrowded
bones to become weak and brittle?
house.
1. Arthritis
1. Airborne disease 2. Osteoporosis
2. Protozoan disease
3. Plantar fasciitis
3. Waterborne disease
4. Scoliosis
4. Bacterial disease
14. Amoebiasis or amoebic diarrhea is a common
6. 'Gout' happens due to accumulation of _______ parasitic infection of the intestine, caused by
in joints.
_______ group of amoeba.
1. Urea crystals
1. Heliozoa
2. Ammonia crystals
2. Sacodina
3. Glucose crystals 3. Entamoeba
4. Uric acid Crystals
4. Lobosa
7. Jaundice is a disease of _______. 15. Goitre disease is caused due to deficiency of
1. Liver
which of the following element?
2. Heart
1. Iron
3. Kidney
2. Potassium
4. Brain 3. Iodine
4. Protein
8. Deficiency of which of the following vitamins
causes night blindness?
1. Vitamin A
2. Vitamin B-12
3. Vitamin C
4. Vitamin D
TIER - II SSC CHSL GENERAL SCIENCE

HUMAN DISEASE
6. Consider the following:
1. The following are water borne human diseases:
1. Kala-azar is a bacterial disease.
A. Typhoid
2. Deficiency of vitamin K results in
B. Cholera
Hemorrhage.
C. Chickenpox
Which of the statements given above is/are not
D. Conjunctivitis correct?
Choose the correct answer: 1. 1 only
1. C & D only
2. 2 only
2. A & B only
3. Both 1 and 2
3. A, B & C only
4. Neither 1 nor 2
4. B, C & D only
7. Which one of the following is NOT a feature of
2. Which of the following disease can be
Marasmus?
transmitted from one person to another through
1. The body has a "skin and bones"
sexually?
appearance
I. AIDS
2. Hair becomes brittle
II. Syphilis
3. Person suffering is extremely underweight
III. Gonorrhea 4. It is extremely communicable
1. I Only
2. I and II Only
8. Scurvy is caused by not having enough
3. I and III Only
_______, resulting in general weakness,
4. I, II and III
anaemia, gum disease and skin bleeding.
1. Cyanocobalamin
3. An infective agent that typically consists of a 2. Ascorbic acid
nucleic acid molecule in a protein coat and that
3. Niacin
is able to multiply only within the living cells of a
4. Thiamine
host is called as:
1. Virus
9. Which of the following is a severe form of
2. Toxin
malnutrition that commonly affects infants and
3. Symbiont
toddlers, most often around the age of weaning
4. Bacteria
through age 5?
1. Bacterial meningitis
4. Match column A with column B. 2. Diarrhea
Column A Column B 3. Pneumonia
(I) Kwashiorkor A. lodine 4. Kwashiorkor
deficiency
(II) Weak bones and B. Iron deficiency 10. Ingestion of excess "Fluoride" through drinking-
muscles water can cause "Fluorosis" which mainly
(III) Anaemia C. Calcium affects _______.
deficiency 1. Heart
(IV) Goitre D. Protein 2. Teeth and bones
deficiency 3. Eyes
1. (I) (C), (II) (B), (III) (D), (IV) (A) 4. Liver
2. (I) (B), (II) (A), (III) (C), (IV) (D)
3. (I) (D), (II) (C), (III) (B), (IV) (A) 11. Sambu lives in a slum, drinking water usually
4. (I) (B), (II) (C), (III) (A), (IV) (D) gets contaminated. He is prone to get diseases
like _______.
5. An auto immune disorder which affect 1. Tuberculosis
neuromuscular junction leading to fatigue, 2. Measles
weakening and paralysis of skeletal muscles is 3. Chicken pox
_______. 4. Typhoid and cholera
1. Gout
2. Osteoporosis 12. The Zika virus disease is caused by a virus
3. Tetany transmitted primarily by the _______ species of
4. Myasthenia gravis mosquitoes.
TIER - II SSC CHSL GENERAL SCIENCE

1. Culex
2. Anopheles
3. Aedes
4. Haemagogus

13. Which of the following bacteria is found in the

lower part of the stomach of patients with peptic
ulcers?
1. Leishmania
2. Ascaris Lumbricoidus
3. Helicobacter Pylori
4. Staphylococci

14. Which of the following sexually transmitted

diseases do not specifically affect reproductive
organs?
1. AIDS and Hepatitis B
2. Chlamydia sis and AIDS
3. Genital warts and Hepatitis-B
4. Syphilis and Genital herpes

15. Match the following sexually transmitted

diseases (Column - 1) with their causative
agent (Column - II) and select the correct
option.
Column-I Column-II
A. Gonorrhea A. HIV
B. Syphilis B. Neisseria
C. Genital Warts C. Treponema
D. AIDS D. Human
Papilloma Virus
1. A - IV, B - III, C - II, D - I
2. A - II, B - III, C - IV, D - I
3. A - III, B - IV, C - I, D - II
4. A - IV, B - II, C - III, D – I
TIER - I SSC CHSL GENERAL SCIENCE

ZOOLOGY
9. In cockroaches, air enters the body through
1. Which of the following has open vascular
1. Lungs
system?
2. Gills
1. Rat 3. Spiracles
2. Human
4. Skin
3. Birds
4. Cockroach
10. Identify the animal that is NOT a non- chordate.
1. Reptiles
2. Which of the following is the lowest category of
2. Arthropods
taxonomic hierarchy?
3. Porifera
1. Taxon 4. Arachnids
2. Species
3. Genus
11. What are the three parts of bacterial flagellum?
4. Order
1. Head, tail and lower body
2. Filament, tail and hook
3. Which of the following does NOT belong to
3. Basal body, tail and filament
phylum Porifera? 4. Filament, hook and basal body
1. Glass sponges
2. Stromatoporoidea
12. Identify an example of organisms that are free-
3. Oyster
swimming and bottom-dwelling forms.
4. Demo sponges
1. Phytoplankton
2. Zooplankton
4. Which is a specialised excretory cell found in 3. Fungi
Platyhelminthes that acts like a kidney,
4. Mushroom
removing waste material through filtration?
1. Fat cell
13. _______ is an organic matter obtained from the
2. Flame cell
living creatures of the sea like mollusks and
3. Stem cell oysters.
4. Sponge cell
1. Sapphire
2. Quartz
5. Which organism exhibits cellular level of 3. Pearl
organization?
4. Opal
1. Echinoderms
2. Chordates
14. Which one of the following is the odd one out in
3. Sponges
terms of extra embryonic membranes?
4. Platyhelminthes
1. Whale
2. Mammals
6. Structure parapodia are observed in which 3. Amphibian
group of animals?
4. Reptilia
1. Crustacea
2. Annelida
15. The life cycle of a silkworm is
3. Ctenophora
4. Porifera 1. Egg → Caterpillar → Pupa → Adult
2. Egg → Tadpole → Adult
7. Apis cerena, A dorsata, and A florae are all
different varieties of which insects or animals? 3. Egg → larva → Adult
1. Earthworms 4. Egg → Caterpillar → Larva → Adult
2. Butterflies
3. Bees
4. Dragonflies

8. Comma - Shaped Bacteria is called as -

1. Vibrio
2. Bacilli
3. Spirillum
4. Cocci
TIER - II SSC CHSL GENERAL SCIENCE

ZOOLOGY 1. The five-kingdom classification was given

by Ernst Haeckel.
1. Which among the following pairs of 'animal -
2. The Protista lacks well defined nucleus.
phylum of animal kingdom they belong' is
3. The monerans are unicellular and
incorrect?
eukaryotic organisms.
1. Liver fluke - Nematoda
4. The fungi have only a heterotrophic
2. Sycon - Porifera mode of nutrition.
3. Prawns - Arthropoda
4. Starfish - Echinodermata
8. Which of the following cells line the
spongocoels and canals in members of the
2. Which groups of animals are named because of
phylum Porifera?
their spiny skin and have peculiar water- driven 1. Somatic cells
tube system that they use for moving around? 2. Collar cells
1. Hemichordata
3. White cells
2. Aschelminthes
4. Sex cells
3. Echinodermata
4. Mollusca
9. Which set from the following is the odd one on
the basis of classification of animals?
3. Cnidoblasts are specialized cells used for the 1. Frogs, Toad, Salamander
purpose of :
2. Snake, Turtle, Lizard
1. Movement of water among coelenterates. 3. Frog, Lizard, Crocodile
2. Defence among coelenterates.
4. Butterfly, Spider, Scorpion
3. Defence among Echinoderms.
4. Digestion of food among Annelids. 10. Which of the following are characteristic
features of group Arthopoda?
4. Match the following (Column I protozoan with
A. Bilateral symmetry
Column II (its example).
B. Open circulatory system
a) Amoeboid protozoan i) Paramecium C. Spiny skin
b) Ciliated protozoan ii) Entamoeba D. Backbone
c) Flagellated protozoan iii) Trypanosoma 1. A and B only
d) Sporozoan iv) Plasmodium 2. A and C only
1. a-ii, b-i, c-iii, d-iv 3. B and C only
2. a-i, b-ii, c-iii, d-iv 4. B and D only
3. a-iv, b-ii, c-iii, d-i
4. a-iv, b-i, c-iii, d-ii 11. Which one of the following statements is not
correct with reference to the heart?
5. Which of the following is a mammal? 1. Fishes have a two-chambered heart.
A. Sea horse 2. Crocodiles have a three- chambered
B. Sea lion heart.
C. Sea cow 3. Birds have a four-chambered heart
Choose the correct option: 4. Amphibians have a three- chambered heart.
1. C only
2. B and C only 12. Some fungal species live in permanent mutually
3. A and B only dependent relationships with blue- green algae.
4. A and C only Choose the CORRECT name of the
relationship from the options given below.
6. There is no natural death in single celled 1. Saprophytic
organism like amoeba and bacteria, because: 2. Symbiotic
1. They reproduce by asexual reproduction 3. Parasitic
2. They cannot reproduce sexually 4. Autotrophic
3. Parent divides to form offspring
4. They are microscopic organism 13. Bilateral symmetry, segmentation, coelom and
open circulatory system are the characteristics
7. Which among the following statements is of _______.
correct with reference to classification? 1. Chordata
2. Arthropoda
TIER - II SSC CHSL GENERAL SCIENCE

3. Protozoa
4. Porifera

14. Which phylum of the Kingdom Animalia exhibits

an organ-system level of organisation and has
a mantle or mass of soft flesh that envelops the
soft body and surrounds the internal organs?
1. Phylum Ctenophora
2. Phylum Mollusca
3. Phylum Porifera
4. Phylum Coelenterata

15. The following animal belongs to which Phylum?

1. Coelenterata
2. Mollusca
3. Echinodermata
4. Hemichordata