Biomolecules

EXERCISE-I
BIOMOLECULES 6. Which functional group participates in
1. The nitrogenous base having two possible disulfide bond formation in proteins –
hydrogen bonding sites is – (1) Thioether (2) Thiol
(1) Thymine (2) Cytosine (3) Thioester (4) Thiolactone
(3) Guanine (4) None
CBO006
CBO001
7. The cell membranes are mainly composed of–
2. The correct statement in respect of protein
(1) Phospholipids
haemoglobin is that it –
(2) Proteins
(1) Maintains blood sugar level
(2) Acts as an oxygen carrier in the blood (3) Fats
(3) Forms antibodies and offers resistance to (4) Carbohydrates
diseases CBO007
(4) Acts as a catalyst for biological reactions 8. Which is simplest amino acid –
CBO002 (1) Alanine (2) Asparagine
3. The hormone that helps in the conversion of (3) Glycine (4) Tyrosine
glucose to glycogen is – CBO008
(1) Bile acids (2) Adrenaline 9. Which of the following biomolecules is
(3) Insulin (4) Cortisone
insoluble in water –
CBO003
(1) –Keratin (2) Haemoglobin
4. The helical structure of protein is stabilized by –
(3) Ribonuclease (4) Adenine
(1) Hydrogen bonds (2) Ether bonds
CBO009
(3) Peptide bonds (4) Dipeptide bonds
CBO004 10. The presence or absence of hydroxy group on
5. Which of the following structures represents which carbon atom of sugar differentiates
the peptide chain – RNA and DNA?
H H (1) 3rd (2) 4th
(3) 1st (4) 2nd
(1) N C C C C N C C C
CBO010
O
11. The change in the optical rotation of freshly
H H H O prepared solution of glucose is known as :-
(2) N C C N C C N C C (1) Tautomerism
O O (2) Racemisation
H O H (3) Specific rotation
(3) N C C C N C C N C C C (4) Mutarotation
CBO011
H O
12. Which one of the following bases is not
H O
present in DNA ?
(4) N C N C NH C NH
(1) Cytosine (2) Thymine
O H
(3) Quinoline (4) Adenine
CBO005
CBO012

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 NEET : Chemistry
13. Lysine; H2N–(CH2)4–CH–COOH is :- 20. Which of the following B group vitamins can
NH2 be stored in our body.
(1) Vitamin B1 (2) Vitamin B2
(1) -Amino acid
(3) Vitamin B6 (4) Vitamin B12
(2) -amino acid
CBO020
(3) Amino acid synthesised
21. Which of the following are polysaccharides –
(4) -Amino acid
(a) Starch (b) Cellulose
CBO013
(c) Dextrins (d) Glycogen
14. In fibrous protein, polypeptide chains are (1) a, b & c (2) a, b, d
held toegether by :- (3) a & c (4) a, b, c, d
(1) H-bond CBO021
(2) Disulphide linkage 22. Cellulose can not be tested by followings –
(3) Electrostatic forces attraction (1) Fehling's solution (2) Tollen's reagent
(4) 1 and 2 both (3) Both of these (4) None of these
CBO014 CBO022
15. Which is correct in following – 23. On hydrolysis of proteins, the product is/are–
(1) Monosaccharides also known as sugars (1) Amino acids (2) Peptides
(2) Polysaccharides are non sugars (3) Enzymes (4) 1 & 2 both
(3) Maltose and Lactose are reducing sugar CBO023
(4) All of these 24. Which of the following do not have hemiacetal
CBO015 group:-
16. Structure of glycogen is similar to :- (1) Fructose (2) Maltose
(1) Amylose (2) Amylopectin (3) Sucrose (4) Glucose
(3) Cellulose (4) Glucose CBO024
CBO016 25. In amino acids, more number of amino than
carboxyl groups makes it –
17. Which of the following gives osazone
(1) Acidic (2) Basic
different from the other three :-
(3) Neutral (4) None of these
(1) Glucose (2) Mannose
CBO025
(3) Galactose (4) Fructose
26. Which amino acids are called non essential –
CBO017
(1) Those which can be synthesized in the body.
18. Anomers of glucose (-form & -form) are
(2) Those which have more amino groups as
differ in the stereochemistry at which
compared to carboxyl groups
carbon–
(3) Those which have equal number of amino
(1) C-1 (2) C-2 acid and carboxyl groups
(3) C-3 (4) All of these (4) None of these
CBO018 CBO026
19. Sucrose in presence of invertase on 27. Which of the following is not essential amino
hydrolysis gave – acid –
(1) Glucose (2) Fructose (1) Serine (2) Lysine
(3) Ethyl alcohol (4) 1 & 2 both (3) Threonine (4) Tryptophan
CBO019 CBO027

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Biomolecules
28. In acidic & alkaline solution amino acids 35. Mainly DNA is localized in –
exists as a – (1) Cytoplasm (2) Nucleus
(1) Positive ion & negative ion respectively (3) Mitochondria (4) Chloroplasts
(2) Negative ion & positive ions respectively CBO035
(3) Neutral in both medium 36. RNA contains following pyrimidine bases –
(4) None of these (a) Thymine (b) Uracil
CBO028 (c) Cytosine (d) Adenine
29. In which of following shapes are found in (1) b & c (2) a, b, c
tertiary structure of proteins – (3) a, b, d (4) All of these
(1) Fibrous (2) Globular CBO036
(3) Both of these (4) None of these 37. DNA molecules can duplicate themselves-
CBO029 called –
30. The example of globular protein is (1) Replication (2) Translation
(1) Silk (2) Collagen (3) Transcription (4) None of these
(3) Haemoglobin (4) All of these CBO037
CBO030 38. Which of the following carbohydrates are
31. If a native protein is subjected to physical or branched polymer of glucose.
chemical treatment which may disrupt its (1) Glycogen (2) Amylopectin
various forms without affecting its primary (3) Cellulose (4) Both (1) & (2)
structure, are called – CBO038
(1) Inactive protein (2) Denatured protein 39. Vitamin K
(3) Both of these (4) None of these (1) Is phylloquinone
CBO031 (2) Soluble in oils and fats
32. The coagulation of egg protein while boiling (3) Deficiency lenthens the blood clotting
of egg is called – (4) All of these
(1) Reversible protein denaturation CBO039
(2) Irreversible protein denaturation 40. Which of the following is not an amino acid
(3) Renaturation (1) Histidine (2) Benzidine
(4) None of these (3) Alanine (4) Proline
CBO032 CBO040
33. An enzyme molecule may contain protein and 41. Vitamin C is called :
non-protein part. Non-protein part is known as:- (1) Antisterility (2) Antiscurvy
(1) Holoenzyme (2) Cofactor (3) both of these (4) None of these
(3) Inverted enzyme (4) None of these CBO041
CBO033 42. Reducing sugars are one which :
34. Cofactor which gets attached to the enzyme at (1) Reduce fehling's solutions
the time of reaction are known as (2) Not reduce tollen's reagent
(1) Coenzymes (2) Apoenzyme (3) Have bonded aldehydic or ketonic groups
(3) Prothetic group (4) None of these (4) All of these
CBO034 CBO042

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 NEET : Chemistry
43. Multiple deficiencies caused by lack of more 45. Which of the following is correct about
than one vitamin are more common in human H–bonding in nucleotide –
beings. This condition of vitamin deficiency is (1) A–T G–C (2) A–G T–C
known as (3) G–T A–C (4) A–A T–T
(1) Avitaminosis (2) Xerophthalmia CBO045
(3) Convulsions (4) None of these
CBO043
44. Which vitamin is synthesize in human body
from carotene
(1) Vitamin-A (2) Vitamin-C
(3) Vitamin-K (4) All of these
CBO044

EXERCISE-I (Conceptual Questions) ANSWER KEY

Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Answer 1 2 3 1 2 2 1 3 1 4 4 3 1 4 4
Question 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Answer 2 3 1 4 4 4 3 4 3 2 1 1 1 3 3
Question 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
Answer 2 2 2 1 2 1 1 4 4 2 2 1 1 1 1

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Biomolecules

EXERCISE-II (Previous Year Questions)

AIPMT 2014 4. Which one given below is a non-reducing
1. D (+) glucose reacts with hydroxylamine and sugar ?
yields an oxime. The structure of the oxime (1) Maltose (2) Lactose
would be : (3) Glucose (4) Sucrose
CH = NOH CBO065
CH = NOH
HO – C – H NEET-II 2016
H – C – OH
HO – C – H 5. The central dogma of molecular genetics states
HO – C – H
(1) (2) that the genetic information flows from :-
HO – C – H H – C – OH
(1) DNA → RNA → Proteins
H – C – OH H – C – OH
(2) DNA → RNA → Carbohydrates
CH2OH CH2OH
(3) Amino acids → Proteins → DNA
CH = NOH (4) DNA → Carbohydrates → Proteins
HO – C – H CBO066
(3) H – C – OH (4) 6. Which one of the following compounds shows
HO – C – H the presence of intramolecular hydrogen bond ?
H – C – OH (1) Cellulose
CH2OH (2) Concentrated acetic acid
CBO062 (3) H2O2
NEET-I 2016 (4) HCN
2. In a protein molecule various amino acids are CBO067
linked together by : NEET(UG) 2018
(1) -glycosidic bond (2) -glycosidic bond 7. The difference between amylose and
(3) Peptide bond (4) Dative bond amylopectin is
CBO063 (1) Amylopectin have 1 → 4 -linkage and
3. The correct statement regarding RNA and 1→ 6 -linkage
DNA, respectively is : (2) Amylose have 1 → 4 -linkage and 1→ 6
(1) The sugar component in RNA is arabinose -linkage
and the sugar component in DNA is (3) Amylopectin have 1 → 4 -linkage and
2'-deoxyribose. 1→ 6 -linkage
(2) The sugar component in RNA is ribose and (4) Amylose is made up of glucose and
the sugar component in DNA is galactose
2'-deoxyribose. CBO068
(3) The sugar component in RNA is arabinose 8. Which of the following compounds can form a
(4) The sugar component in RNA is zwitterion ?
2'-deoxyribose and the sugar component (1) Aniline (2) Acetanilide
in DNA is arabinose. (3) Benzoic acid (4) Glycine
CBO064 CCEL044

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 NEET : Chemistry
NEET(UG) 2019 14. Deficiency of which vitamin causes osteomalacia?
9. The non-essential amino acid among the (1) Vitamin A (2) Vitamin D
following is: (3) Vitamin K (4) Vitamin E
(1) Valine (2) Leucine CBO074
(3) Alanine (4) Lysine NEET(UG) 2021
CBO069 15. The RBC deficiency is deficiency disease of:
NEET(UG) 2019 (ODISHA) (1) Vitamin B12 (2) Vitamin B6
10. Which structure(s) of proteins remains(s) (3) Vitamin B1 (4) Vitamin B2
intact during denaturation process ? CBO075
(1) Both secondary and tertiary structures NEET(UG) 2023
(2) Primary structure only 16. Given below are two statements:
(3) Secondary structure only Statement I : A unit formed by the
(4) Tertiary structure only attachment of a base to l' position of sugar is
CBO070 known as nucleoside
NEET(UG) 2020 Statement II : When nucleoside is linked to
11. Sucrose on hydrolysis gives : phosphorous acid at 5'-position of sugar
(1) -D-Fructose + -D-Fructose moiety, we get nucleotide.
(2) -D-Glucose + -D-Fructose In the light of the above statements, choose
(3) -D-Glucose + -D-Glucose the correct answer from the options given
(4) -D-Glucose + -D-Fructose below:
CBO071 (1) Both Statement I and Statement II are false
12. Which of the following is a basic amino acid: (2) Statement I is true but Statement II is false
(1) Lysine (2) Serine (3) Statement I is false but Statement II is true
(3) Alanie (4) Tyrosine (4) Both Statement I and Statement II are true
CBO072 CBO114
NEET(UG) 2020 (COVID-19) 17. Cheilosis occurs due to deficiency of________.
13. The reaction of concentrated sulphuric acid (1) thiamine (2) nicotinamide
with carbohydrates (C12H22O11) is an example of (3) pyridoxamine (4) riboflavin
(1) Dehydration (2) Oxidation
(3) Reduction (4) Sulphonation CBO115
CBO073

EXERCISE-II (Previous Year Questions) ANSWER KEY

Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Answer 4 3 2 4 1 1 1 4 3 2 4 1 1 2 1
Question 16 17
Answer 2 4

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Biomolecules

EXERCISE-III (Analytical Questions)

1. In which of the following properties of an (1) C-2 of one unit and C-4 of another unit
open chain structure of glucose could not be (2) C-1 of one unit and C-2 of another unit
explained by Baeyer – (3) C-1 of one unit and C-4 of another unit
(1) Glucose contain aldehyde group, but does (4) C-2 of one unit and C-3 of another unit
not give schiff's test CBO080
(2) Glucose does not react with sodium 6. Which statement is/are incorrect –
hydrogen sulphite and ammonia (1) Natural starch has approximately 10-20%
(3) The pentaacetate of glucose does not react of amylose and 80-90% of amylopectin.
with hydroxy amine indicates absence of (2) Amylose is water soluble and gives blue
–CHO group colour with iodine
(4) All of these (3) Amylopectin is a branched chain
CBO076 polysaccharides insoluble in water and
2. When glucose was crystallized from a
does not give blue colour with iodine
concentrated solution at 30°C & 98°C. It gave
(4) Starch is not hydrolysed by enzyme
 &  form of glucose respectively what are
amylase present in saliva
the angle of rotation [D] for both forms –
CBO081
(1) (+) 111° & (+)19.2°
7. Which of the following statement is true for
(2) (+)19.2° & (–) 111°
(3) (+) 111° & (–)19.2° proteins –
(4) (–) 111° & (–)19.2° (1) Proteins are high molecular mass complex
CBO077 biopolymers of amino acids present in all
3. Dinucleotide is obtained by joining two living cells
nucleotides together by phosphodiester linkage. (2) Protein may contains phosphorous & iodine
Between which carbon atoms of pentose sugar (3) Proteins may contains iron, copper, zinc
of nucleotides are these linkages presents. and manganese
(1) 5' and 3' (2) 1' and 5' (4) All of these
(3) 5' and 5' (4) 3' and 3' CBO082
CBO078 8. Which of following are essential amino acids–
4. Which statement is incorrect in following – (a) Aspartic acid (b) Leucine
(1) Sucrose is dextrorotatory (c) Valine (d) Glycine
(2) After hydrolysis of sucrose, dextrorotatory (e) Alanine
glucose and laevorotatory fructose will
(1) a, b & c (2) a, b, d & e
obtained
(3) b & c (4) a, c, d & e
(3) Laevorotation of fructose is more than
CBO083
dextrorotation of glucose
9. At a certain hydrogen ion concentration (pH),
(4) Cane sugar gives nonequimolar mixture
the dipolar ion exists as a neutral ion and does
of D- (+)-glucose and D- (–)-fructose
not migrate to either electrode. What is the
CBO079
5. On hydrolysis of one mole of maltose two name of pH point for amino acids –
moles of D-glucose are obtained. These two (1) Isoelectric point (2) Isoprotonic point
glucose units are linked together through a - (3) Isotonic point (4) None of these
glycoside linkage between – CBO084

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 NEET : Chemistry
10. Which of the following reactions of glucose 15. Nucleosides are –
can be explained only by its cyclic structure. (1) Base + sugar = Nucleoside
(1) Glucose forms penta acetate (2) N–glycosides of purine or pyrimidine
(2) Glucose reacts with hydroxylamine to
bases with pentose sugar
form an oxime
(3) Both of these
(3) Penta acetate of glucose does not react
with hydroxylamine (4) None of these
(4) Glucose is oxidised by nitric acid to CBO090
gluconic acid 16. RNA molecules in turn directs the synthesis of
CBO085 specific proteins which are characteristic of each
11. Protein found in biological system with kind of organism. This process is known as –
definite configuration and biological activity (1) Translation (2) Transcription
is called –
(3) Replication (4) None of these
(1) Amino acids (2) Native protein
CBO091
(3) Conformer protein (4) Inactive protein
CBO086 17. A single stand of DNA can act as a template on
12. Which of following statement is not true for which a molecule of RNA is synthesized in a
enzyme – specific manner. This process is known as –
(1) Some enzymes can be non proteins also (1) Replication (2) Transcription
(2) Prothetic groups which get attached to (3) Translation (4) None of these
enzyme at the time of reaction are known CBO092
as cofactor.
18. Which is correct statement –
(3) Enzymes provides lower activation
(1) Starch is polymer of –glucose
pathways there by increasing the rate of
reaction (2) Amylose is a component of cellulose
(4) None of these (3) Protiens are composed of only one type of
CBO087 amino acid
13. Which of following statements is incorrect – (4) In cyclic structure of fructose, there are
(1) Proteins have a polyamide chain while four carbons and one oxygen atom
nucleic acids contains a poly phosphate
CBO093
ester chain
19. Match the column.
(2) Nucleic acids are long chain polymers of
nucleotides Column-I Column-II
(3) RNA is major source of genetic information (Carbohydrates) (Source or name)
which is copied into a DNA molecules (a) Sucrose (p) Animal starch
(4) Proteins are synthesized in a process (b) Lactose (q) Cereals, roots,
involving translation of RNA. tubers
CBO088
(c) Glycogen (r) Milk sugar
14. Complete hydrolysis of DNA or RNA yields
(d) Starch (s) Cane sugar
following–
(1) Ribose in RNA & deoxyribose in DNA (1) a – r, b – s, c – q, d - p
(2) Hetrocyclic nitrogenous purines base (2) a – s, b – r, c – p, d - q
(3) Hetrocyclic nitrogenous pyrimidines (3) a – s, b – p, c – r, d - q
(4) All of these (4) a – p, b – q, c – r, d - s
CBO089 CBO094

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Biomolecules
20. Match the column. (c) CH2OH (r) -D-Glucose
Column-I Column-II O OH
(Reaction of Glucose) (Product)
H HO
(a) HI,  (p) Osazone
Glucose ⎯⎯⎯ → H CH2OH
(b) Glucose (q) n-Hexane OH H
Br2 water
⎯⎯⎯⎯ → (d) CH2OH (s) -D-Fructose
(c) Glucose (r) Gluconic O CH2OH
Nitric acid acid
⎯⎯⎯⎯ → H HO
(d) Glucose (s) Saccharic H OH
3Ph − NH − NH 2
⎯⎯⎯⎯⎯→ acid OH H
H

(1) a – q, b – s, c – p, d - r (1) a – p, b – r, c – q, d - s
(2) a – q, b – p, c – r, d - s (2) a – r, b – p, c – q, d - s
(3) a – q, b – s, c – r, d - p (3) a – p, b – r, c – s, d - q
(4) a – q, b – r, c – s, d - p (4) a – r, b – p, c – s, d - q
CBO095 CBO097
21. Match the column.
23. Which of the following are non-reducing in
Column-I Column-II
nature-
(Carbohydrates) (Monosaccharide
(A) Cellulose (B) Sucrose
unit)
(C) Lactose (D) Starch
(a) Maltose (p) -D-Glucose
(1) A and B are correct
(b) Lactose (q) Two -D-Glucose
(2) A, B and C are correct
(c) Cellulose (r) -D-Galactose &
(3) A, B and D are correct
-D-Glucose
(4) A, C and D are correct
(d) Sucrose (s) -D-Glucose & -
D-Fructose CBO098
24. Given below are two statements; one is
(1) a – q, b – s, c – r, d - p labelled as Assertion and the other is
(2) a – q, b – r, c – p, d - s labelled as Reason.
(3) a – r, b – s, c – p, d - q
Assertion :- Glucose gets oxidised to six
(4) a – r, b – p, c – q, d - s
carbon carboxylic acid (gluconic acid) on
CBO096
reaction with a mild oxidising agent like Br2
22. Match the column.
water.
Column-I Column-II
Reason :- This indicates the presence of a
(Structure) (Name)
primary alcoholic (–OH) group in glucose.
(a) CH2OH (p) -D-annose
H In the light of the above statements, choose
O H
the most appropriate answer from the
H
OH H options given below :
(1) Assertion & reason both are true & reason
OH OH
H OH is a correct explaination of the assertion.
(2) Assertion & reason both are true but
(b) CH2OH (q) -D-Fructose reason is not a correct explaination of the
H O H assertion.
H
OH HO (3) Both assertion & reason are false.
OH
(4) Aassertion is true but reason is false.
OH
H H CBO099

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 NEET : Chemistry
25. Given below are two statements: (1) Statement I is correct and statement II is
Statement-I : the pentaacetate of glucose incorrect
does not react with hydroxylamine indicating (2) Statement I is incorrect and statement II
the absence of free –CHO group. is correct.
Statement-II : Despite having the aldehyde (3) Statement-I and statement-II both are
group, glucose does not give schiff's test and correct.
it does not form the hydrogen-sulphite (4) Statement I and statement II both are
addition product with NaHSO3. incorrect
In the light of the above statements, choose CBO102
28. Given below are two statements:
the most appropriate answer from the
Statement-I : Amylose is water soluble
options given below:
component which constitutes about 15 – 20%
(1) Statement I is correct and statement II is
of starch. Chemically amylose is a long
incorrect
unbranched chain with 200–1000 –D–(+)–
(2) Statement-I and statement-II both are correct. glucose units held together by C1–C4
(3) Statement I and statement II both are glycosidic linkage.
incorrect Statement-II : Amylopectin is insoluble in
(4) Statement I is incorrect and statement II water and constitutes about 80–85% of
is correct. starch. It is a branched chain polymer of –D–
CBO100 glucose units in which chain is formed by C1–
26. Given below are two statements: C4 glycosidic linkage whereas branching
Statement-I : All carbohydrates which occurs by C1–C6 glycosidic linkage.
reduce Fehling's solution and Tollen's In the light of the above statements, choose
reagent are refered to as reducing sugars. the most appropriate answer from the
Statement-II : All disaccharides whether options given below:
aldose or ketose are reducing sugares. (1) Statement-I and statement-II both are
In the light of the above statements, choose correct.
the most appropriate answer from the (2) Statement I is correct and statement II is
options given below: incorrect
(1) Statement I is incorrect and statement II (3) Statement I is incorrect and statement II
is correct. is correct.
(4) Statement I and statement II both are
(2) Statement-I and statement-II both are
incorrect
correct.
CBO103
(3) Statement I is correct and statement II is
29. Given below are two statements:
incorrect Statement-I : Only –Amino acids are
(4) Statement I and statement II both are obtained on hydrolysis of proteins.
incorrect Statement-II : The amino acids which can be
CBO101 synthesised in body are known as essential
27. Given below are two statements: amino acids.
Statement-I : Sucrose is laevorotatory but In the light of the above statements, choose
after hydrolysis gives dextrorotatory glucose the most appropriate answer from the
and laevorotatory fructose. options given below:
Statement-II : Hydrolysis of sucrose brings (1) Both statement I & II are correct.
about a change in the sign of rotation, from (2) Both statement I & II are incorrect.
dextro (+) to laevo (–) and the product is (3) Statement I is incorrect but statement II is
named as invert sugar. correct
In the light of the above statements, choose (4) Statement I is correct but statement II is
the most appropriate answer from the incorrect
options given below: CBO104

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Biomolecules
30. Given below are two statements: 33. Match the column :-
Statement-I : In Zwitter ionic form, Amino Column-I Column-II
acids show amphoteric behaviour as they
(a) Fat soluble (p) Fingerprinting
react both with acid & bases.
vitamin
Statement-II : Most natural occurring amino
acids have D-configuration. (b) Water (q) Vitamin A and
In the light of the above statements, choose soluble vitamin D
the most appropriate answer from the vitamin
options given below: (c) DNA (r) Uracil
(1) Statement I is incorrect but statement II is
(d) RNA (s) Vitamin B and
correct
(2) Statement I is correct but statement II is vitamin C
incorrect (1) a - s, b - s, c - r, d - p
(3) Both statement I & II are incorrect. (2) a - q, b - s, c - p, d - r
(4) Both statement I & II are correct.
CBO105 (3) a - q, b - r, c - p, d - s
31. Match the column I & II :- (4) a - q, b - s, c - r, d - p
Column-I Column-II CBO108
(Vitamins) (Sources) 34. Match the column I & II :-
(a) Vitamin-A (p) Exposure to Column-I Column-II
sunlight (a) Heredity (p) Proteins
(b) Vitamin-B12 (q) Yeast, milk (b) Chromosomes (q) Transmission
(c) Vitamin-B6 (r) Meat made up by of inherent
(d) Vitamin-D (s) Fish liver oil characters
(1) a - s, b - r, c - q, d - p (c) Nucleic Acid (r) Increased
(2) a - s, b - q, c - p, d - r
(3) a - q, b - s, c - r, d - p fragility of
(4) a - r, b - p, c - q, d - s RBCs
CBO106 (d) Vitamin-E (s) Long chain
32. Match the column I & II :-
deficiency polymers of
Column-I Column-II
Nucleotides
(Vitamins) (Disease)
(1) a - q, b - p, c - s, d - r
(a) Vitamin-B1 (p) Scurvy
(2) a - q, b - p, c - r, d - s
(b) Vitamin-B6 (q) Blood clotting
(3) a - p, b - q, c - r, d - s
delay
(4) a - p, b - q, c - s, d - r
(c) Vitamin-C (r) Beri-Beri
CBO109
(d) Vitamin-K (s) Convulsions
35. Given below are two statements; one is
(1) a - r, b - p, c - q, d - s
labelled as Assertion (A) and the other is
(2) a - s, b - q, c - p, d - r
labelled as Reason(R).
(3) a - r, b - s, c - p, d - q
Assertion : Amino acids are water soluble,
(4) a - q, b - r, c - s, d - p
high melting solids & behave like salts rather
CBO107
than simple amines or carboxylic acids.

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 NEET : Chemistry
Reason : This behaviour is due to presence of 37. Statement-I : Enzymes which do not catalyse
both acidic (–COOH) & basic (–NH2) groups in the oxidation of one substrate with
the same molecule. simultaneous reduction of another substrate
are named as oxido-Reductase enzymes.
In the light of the above statements, choose
Statement-II : Enzymes are needed in large
the most appropriate answer from the quantity for the progress of a reaction.
options given below : (1) Statement I is incorrect but statement II is
(1) Both assertion and reason are false. correct.
(2) Assertion is true but reason is false. (2) Statement I is correct but statement II is
(3) Both assertion & reason are true but incorrect
reason is not the correct explanation of (3) Both statements I and statements II are
assertion. incorrect.
(4) Both assertion & reason are true and (4) Both statements I and statements II are
reason is a correct explanation of correct.
assertion. CBO112
CBO110 38. Read given statements
36. Statement-I : Protein found in a biological (A) During denaturation, 2° & 3° structures of
system with unique three dimensional proteins are not destroyed.
structure & biological activity is called a (B) 1° structure of protein is destroyed
native protein. during denaturation.
Statement-II : Except glycine all other (C) Curdling of milk which is caused due to
naturally occurring -Amino acids are formaton of lactic acid by bacteria present
optically active.
in milk is an example of denaturation.
(1) Statement I is correct but statement II is
Which statement(s) is/are incorrect in given
incorrect
options -
(2) Statement I is incorrect but statement II is
(1) A, C only (2) A, B only
correct.
(3) A, B, C (4) B, C only
(3) Both statements I and statements II are
correct. CBO113
(4) Both statements I and statements II are
incorrect.
CBO111

EXERCISE-III (Analytical Questions) ANSWER KEY

Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Answer 4 1 1 4 3 4 4 3 1 3 2 2 3 4 3
Question 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Answer 1 2 1 2 4 2 2 3 4 2 3 2 1 4 2
Question 31 32 33 34 35 36 37 38
Answer 1 3 2 1 4 3 3 2

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