CEE Probable Model Set: 17
PHYSICS (Questions 1 - 50)
1. A ball is dropped from a height of 20 m. The velocity with which it strikes the ground is (take g =
10 m/s²):
a. 10 m/s
b. 20 m/s
c. 30 m/s
d. 40 m/s
The dimensional formula for latent heat is:
a. [M L² T⁻²]
b. [M⁰ L² T⁻²]
c. [M L T⁻²]
d. [M L² T⁻¹]
A 20 µF capacitor is connected to a 200 V, 50 Hz source. The capacitive reactance is
approximately:
a. 100 Ω
b. 159 Ω
c. 200 Ω
d. 50 Ω
A person uses a convex lens of focal length 50 cm as a magnifying glass. To obtain a
magnification of 6, the object should be placed at a distance from the lens of: (D = 25 cm)
a. 25 cm
b. 10 cm
c. 4.17 cm
d. 8.33 cm
The process responsible for the enormous energy released in an atom bomb is:
a. Nuclear fusion
b. Nuclear fission
c. Chemical reaction
d. Radioactive decay
If the radius of the Earth were to shrink by 1% while its mass remains the same, the acceleration
due to gravity on the Earth's surface would:
a. Decrease by 2%
b. Increase by 2%
c. Decrease by 1%
d. Increase by 1%
The amount of work done in stretching a spring from its natural length to an extension 'x' is W.
The work done in stretching it from extension 'x' to '2x' is:
a. W
b. 2W
c. 3W
d. 4W
The power factor of a series LCR circuit at resonance is:
a. 0
b. 1
c. 0.5
d. Depends on the values of L, C, and R
When light passes from a rarer to a denser medium, which of the following quantities increases?
a. Frequency
b. Wavelength
c. Velocity
d. None of the above
The excess pressure inside a liquid drop of radius R is 2T/R. If two such drops coalesce to form a
single larger drop, the temperature of the drop will:
a. Increase
b. Decrease
c. Remain the same
d. First increase then decrease
A machine gun fires 10 bullets per second, each of mass 50 g, with a speed of 1000 m/s. The
force required to hold the gun in position is:
a. 50 N
b. 100 N
c. 500 N
d. 1000 N
A radioactive sample has a half-life of 4 years. The probability that a nucleus will decay in 8 years
is:
a. 1/4
b. 1/2
c. 3/4
d. 1
In a transistor, the emitter is the most heavily doped, the collector is moderately doped, and the
base is very lightly doped. This is to ensure:
a. A large base current
b. A large emitter current and a collector current almost equal to it
c. A high resistance in the base region
d. A large voltage gain only
An object is placed 30 cm in front of a convex mirror of focal length 15 cm. The image formed is:
a. Real and at 10 cm
b. Virtual and at 10 cm
c. Real and at 30 cm
d. Virtual and at 30 cm
An ideal gas is compressed from volume V to V/2 through an isothermal process and then
through an adiabatic process. In which case is the work done greater?
a. Isothermal process
b. Adiabatic process
c. Work done is the same in both
d. Depends on the nature of the gas
A point charge +Q is placed at the center of a conducting spherical shell of inner radius R₁ and
outer radius R₂. The charge induced on the outer surface of the shell is:
a. -Q
b. +Q
c. 0
d. Q(R₂/R₁)
Two satellites, A and B, of the same mass are orbiting the Earth at altitudes R and 3R respectively,
where R is the radius of the Earth. The ratio of their kinetic energies (KA : KB) is:
a. 1:1
b. 2:1
c. 1:2
d. 4:1
A piece of iron is heated from 30°C to 90°C. The change in its temperature on the Kelvin scale and
the Fahrenheit scale are respectively:
a. 60 K, 108°F
b. 333 K, 194°F
c. 60 K, 140°F
d. 333 K, 108°F
The dual nature of light is exhibited by:
a. Diffraction and photoelectric effect
b. Reflection and refraction
c. Interference and polarization
d. The Compton effect only
The decimal number 25 is represented in binary as:
a. 11001
b. 10011
c. 11010
d. 10101
A body of mass 'm' is suspended from a spring balance in a lift. If the lift moves downwards with
an acceleration 'a' (a < g), the reading of the balance will be:
a. m(g+a)
b. m(g-a)
c. mg
d. 0
A force F = (6i + 8j) N produces an acceleration of 1 m/s² in a body. The mass of the body is:
a. 10 kg
b. 14 kg
c. 6 kg
d. 8 kg
Two tuning forks when sounded together produce 5 beats per second. The frequency of one is
256 Hz. The frequency of the other could be:
a. 256 Hz only
b. 261 Hz only
c. 251 Hz only
d. Either 251 Hz or 261 Hz
A wire carrying a current 'i' is shaped as a circle of radius 'R'. The magnetic field at its center is B.
If the wire is bent into a square of side 'a', the magnetic field at its center will be:
(This question requires applying formulas for both and comparing)
a. Greater than B
b. Less than B
c. Equal to B
d. Zero
The drift velocity of electrons in a conductor is of the order of:
a. 10⁸ m/s
b. 10³ m/s
c. 10⁻⁴ m/s
d. 10⁻¹⁰ m/s
The resolving power of a microscope is inversely proportional to:
a. The refractive index of the medium
b. The diameter of the objective lens
c. The numerical aperture
d. The wavelength of light used
A solid sphere is rotating in free space. If the radius of the sphere is increased while keeping its
mass the same, which of the following will not be affected?
a. Moment of inertia
b. Angular velocity
c. Angular momentum
d. Rotational kinetic energy
Which of the following statements about magnetic materials is incorrect?
a. Diamagnetic materials have negative magnetic susceptibility.
b. Paramagnetic materials have positive but small magnetic susceptibility.
c. Ferromagnetic materials lose their magnetism above the Curie temperature.
d. The permeability of a diamagnetic material is slightly greater than 1.
The ionization energy of a hydrogen atom is 13.6 eV. The energy required to excite an electron
from the ground state (n=1) to the first excited state (n=2) is:
a. 13.6 eV
b. 3.4 eV
c. 10.2 eV
d. 1.89 eV
In a series LCR circuit, the quality factor Q can be increased by:
a. Decreasing R
b. Decreasing L
c. Increasing C
d. Increasing the frequency
A bullet of mass 'm' and velocity 'v' is fired into a large block of mass 'M' at rest. The final velocity
of the system is:
a. (m/M)v
b. (M/(M+m))v
c. (m/(M+m))v
d. ((M+m)/m)v
The unit of 'a' in the van der Waals equation (P + a/V²)(V - b) = RT is:
a. L² atm mol⁻²
b. L atm mol⁻¹
c. atm mol⁻²
d. L² mol⁻²
An object is placed 1.5 m from a screen. A convex lens is used to form an image of the object on
the screen. It is found that there are two positions of the lens for which a sharp image is formed.
If the distance between these two positions is 0.5 m, the focal length of the lens is:
a. 0.5 m
b. 0.46 m
c. 0.35 m
d. 0.25 m
A resistance of 2Ω is to be measured using a meter bridge. A standard resistor of 5Ω is used. If
the null point is obtained at 40 cm from the left end, the unknown resistance should be placed in
the:
a. Left gap
b. Right gap
c. Either gap
d. This measurement is not possible
The rate of disintegration of a radioactive substance is 10¹⁰ per hour at 20 hours from the start.
After 10 more hours, the rate becomes 5 x 10⁹ per hour. The half-life of the substance is:
a. 5 hours
b. 10 hours
c. 20 hours
d. 30 hours
An ideal gas at a pressure P is adiabatically compressed so that its density becomes twice the
initial value. If γ = 1.4, the final pressure will be:
a. 2P
b. 2.64P
c. 1.4P
d. 0.5P
The speed of sound in a gas is proportional to the square root of its absolute temperature. If the
temperature of a gas is increased four times, the speed of sound will:
a. Increase by 2 times
b. Increase by 4 times
c. Remain unchanged
d. Decrease by 2 times
The magnetic field at a point on the axis of a circular coil is B. If the current and radius are both
doubled, the new magnetic field at the center will be:
a. B
b. 2B
c. 4B
d. 8B
A p-n photodiode is fabricated from a semiconductor with a band gap of 2.8 eV. It can detect a
signal of wavelength:
a. 6000 Å
b. 4000 Å
c. 4500 Å
d. 5800 Å
A force F acting on a body depends on its displacement s as F s⁻¹/³. The power delivered by this
force will depend on the displacement as:
a. s²/³
b. s⁰
c. s⁻⁵/³
d. s¹/²
A liquid is contained in a vessel. The liquid-solid adhesive force is very weak as compared to the
cohesive force in the liquid. The shape of the liquid surface near the solid will be:
a. Concave
b. Convex
c. Flat
d. Cylindrical
In the Compton scattering experiment, the maximum change in wavelength occurs when the
photon is scattered through an angle of:
a. 0°
b. 45°
c. 90°
d. 180°
The logic gate which is the reverse of the AND gate is the:
a. NOT gate
b. NOR gate
c. NAND gate
d. XOR gate
Two identical pith balls, each of mass 'm' and charge 'q', are suspended from a common point by
two strings of equal length 'l'. In equilibrium, the distance between them is 'x'. The tension in each
string is:
(This requires force analysis)
a. mg
b. kq²/x²
c. √( (mg)² + (kq²/x²)² )
d. mg + kq²/x²
Two coherent sources produce waves of different intensities which interfere. The ratio of
maximum intensity to minimum intensity is 16. The ratio of the intensities of the sources is:
a. 4:1
b. 25:9
c. 16:9
d. 5:3
The property of a body to oppose any change in its state of rotation is called:
a. Angular momentum
b. Torque
c. Moment of inertia
d. Angular velocity
A child is sitting on a swing. If another child joins her, the time period of the swing will:
a. Increase
b. Decrease
c. Remain unchanged
d. Become zero
A physical quantity that has both magnitude and direction but does not obey the vector law of
addition is:
a. A vector
b. A scalar
c. Electric current
d. A tensor
A virtual image larger than the object can be formed by:
a. A convex mirror
b. A concave mirror
c. A plane mirror
d. A concave lens
The self-inductance of a coil is a measure of its ability to:
a. Store charge
b. Oppose a change in the current flowing through it
c. Generate a magnetic field
d. Dissipate heat
CHEMISTRY (Questions 51 - 100)
1. An organic compound 'A' (C₂H₄O) gives a silver mirror with Tollen's reagent. 'A' reacts with methyl
magnesium bromide followed by hydrolysis to form a compound that gives a positive Lucas test
immediately. Compound 'A' is:
a. Ethanol
b. Ethanal
c. Epoxyethane
d. Acetic acid
The salt of a strong acid and a strong base, like NaCl, does not undergo hydrolysis. The pH of its
aqueous solution is:
a. Less than 7
b. Greater than 7
c. Equal to 7
d. Dependent on concentration
Which of the following species has a bond order of zero, according to Molecular Orbital Theory,
and therefore does not exist?
a. H₂⁺
b. He₂⁺
c. He₂
d. H₂⁻
A certain metal oxide has the formula M₂O₃. It contains 30% oxygen by mass. The atomic mass of
the metal M is:
a. 27 u
b. 52 u
c. 56 u
d. 64 u
In the reaction N₂(g) + 3H₂(g) 2NH₃(g), the addition of an inert gas at constant volume will:
a. Shift the equilibrium to the right
b. Shift the equilibrium to the left
c. Not affect the equilibrium
d. Increase the rate of reaction
The α-helix and β-pleated sheet structures of a protein are examples of its:
a. Primary structure
b. Secondary structure
c. Tertiary structure
d. Quaternary structure
The reaction of an aldehyde with an excess of a primary amine results in the formation of a
compound called a Schiff's base, which is also known as an:
a. Imine
b. Enamine
c. Oxime
d. Hydrazone
The Brownian movement of colloidal particles is caused by:
a. The attraction and repulsion between charged particles
b. The convection currents in the medium
c. The unbalanced bombardment of the particles by the molecules of the dispersion medium
d. The gravitational forces acting on the particles
In the extraction of a less reactive metal like silver from its ore, the ore is first treated with a
solution of NaCN in the presence of air. This process, called leaching, forms a soluble complex.
The role of air is to:
a. Oxidize the metal
b. Oxidize the sulphide ion to sulphate
c. Make the solution alkaline
d. Act as a catalyst
Gabriel phthalimide synthesis is a preferred method for preparing pure primary aliphatic amines
because:
a. It involves a simple one-step reaction.
b. It prevents the formation of secondary and tertiary amines.
c. It can be used to prepare aromatic amines as well.
d. The yields are always 100%.
Match the polymer with its primary property or use:
| Column I (Polymer) | Column II (Property/Use) |
|---|---|
| A. Bakelite | 1. Non-stick cookware coating |
| B. Teflon | 2. Unbreakable crockery |
| C. Melamine | 3. Synthetic fibers |
| D. Terylene | 4. Electrical switches |
a. A-4, B-1, C-2, D-3
b. A-1, B-4, C-3, D-2
c. A-4, B-2, C-1, D-3
d. A-3, B-1, C-2, D-4
Equal volumes of two solutions with pH=2 and pH=4 are mixed. The pH of the resulting solution
will be approximately:
a. 3.0
b. 3.3
c. 2.3
d. 2.7
The reaction of HBr with an unsymmetrical alkene, like propene, results in the formation of 2-
bromopropane. This is explained by the:
a. Stability of the primary carbocation intermediate
b. Stability of the secondary carbocation intermediate
c. Anti-Markovnikov's rule
d. Steric hindrance
Phenol is more acidic than alcohols, but it is a weaker acid than carbonic acid (H₂CO₃). Therefore,
phenol:
a. Reacts with NaOH but not with NaHCO₃
b. Reacts with both NaOH and NaHCO₃
c. Does not react with either NaOH or NaHCO₃
d. Reacts with NaHCO₃ but not with NaOH
An aqueous solution of glucose freezes at -1.86°C. If Kf for water is 1.86 K kg mol⁻¹, the molality
of the solution is:
a. 0.1 m
b. 0.5 m
c. 1.0 m
d. 2.0 m
The main function of roasting in metallurgy is to:
a. Remove volatile impurities and convert sulphide ores to oxides
b. Reduce the metal oxide to the metal
c. Remove moisture from the ore
d. Melt the ore
Which of the following is not a Lewis acid?
a. AlCl₃
b. BF₃
c. Fe³⁺
d. PCl₃
For a first-order reaction, the half-life period is 100 seconds. The rate constant for the reaction is:
a. 6.93 x 10⁻³ s⁻¹
b. 6.93 s⁻¹
c. 0.693 s⁻¹
d. 69.3 s⁻¹
The number of radial and angular nodes for a 3p orbital are, respectively:
a. 1, 1
b. 2, 1
c. 1, 2
d. 2, 0
The reaction of acetaldehyde with semicarbazide gives a product known as a:
a. Semicarbazone
b. Hydrazone
c. Oxime
d. Phenylhydrazone
The inert pair effect refers to the reluctance of the outermost s-electrons to participate in
bonding. This effect is significant for the heavier elements of which groups?
a. Groups 1 and 2
b. Groups 13, 14, and 15
c. Groups 3 to 12
d. Group 17
The monomer units of the biodegradable polymer, PHBV, are:
a. 3-hydroxybutanoic acid and 3-hydroxypentanoic acid
b. Glycine and aminocaproic acid
c. Lactic acid and glycolic acid
d. Adipic acid and hexamethylenediamine
The conversion of a ketone to an alkane can be achieved by both Clemmensen and Wolff-Kishner
reductions. The Wolff-Kishner reduction is preferred if the compound also contains a group
sensitive to:
a. A strong base
b. A strong acid
c. Water
d. A reducing agent
The molecularity of the elementary reaction 2NO + O₂ 2NO₂ is:
a. 2
b. 3
c. 1
d. Cannot be determined
Which of the following statements about interhalogen compounds is incorrect?
a. They are all covalent molecules.
b. They are more reactive than the individual halogens (except F₂).
c. They can be prepared by direct combination of halogens.
d. The central halogen atom is always the smaller and more electronegative one.
The phenomenon of ozone depletion is primarily caused by free radicals generated from CFCs.
The most damaging free radical is:
a. F•
b. Cl•
c. CF₂Cl•
d. O•
The process of converting a freshly prepared precipitate into a colloidal sol by shaking it with a
small amount of electrolyte is called:
a. Coagulation
b. Peptization
c. Dialysis
d. Electrosmosis
When a non-volatile solute is added to a solvent, the vapour pressure of the solvent decreases.
This is because:
a. The solute molecules block the escape of solvent molecules from the surface.
b. The solute reacts with the solvent.
c. The solute has a higher boiling point.
d. The density of the solution increases.
The geometry and magnetic nature of the complex [Ni(CO)₄] are:
a. Square planar and diamagnetic
b. Tetrahedral and diamagnetic
c. Square planar and paramagnetic
d. Tetrahedral and paramagnetic
A process which can be reversed by a very small change in a variable, and in which the system
remains in equilibrium at all times, is called a:
a. Spontaneous process
b. Irreversible process
c. Reversible process
d. Cyclic process
Phenol is less acidic than carboxylic acids. This is primarily because:
a. The carboxylate ion is more resonance-stabilized than the phenoxide ion.
b. Phenol is not soluble in water.
c. The phenyl group is electron-donating.
d. Carboxylic acids are organic.
The Bohr model could not successfully explain the:
a. Spectrum of the hydrogen atom
b. Spectrum of helium ion (He⁺)
c. Splitting of spectral lines in a magnetic field (Zeeman effect)
d. Quantization of angular momentum
In the DNA double helix structure, the two polynucleotide chains are held together by:
a. Covalent bonds
b. Ionic bonds
c. Hydrogen bonds between the complementary base pairs
d. Glycosidic bonds
A racemic mixture is a mixture that:
a. Is optically active and rotates plane-polarized light.
b. Contains equal amounts of two enantiomers and is optically inactive.
c. Contains two diastereomers.
d. Is a pure enantiomer.
An example of a cationic detergent is:
a. Sodium stearate
b. Sodium dodecylbenzenesulphonate
c. Cetyltrimethylammonium bromide
d. Glyceryl stearate
The lanthanide elements are characterized by the filling of the:
a. 3d orbital
b. 4f orbital
c. 5d orbital
d. 6p orbital
Which of the following has the highest electronegativity?
a. I
b. Br
c. Cl
d. F
The correct order of decreasing second ionization enthalpy is:
a. K > Ca > Ba
b. Ba > K > Ca
c. Ca > Ba > K
d. K > Ba > Ca
An example of a shape-selective catalyst used in the petroleum industry for cracking
hydrocarbons is:
a. Zeolites (e.g., ZSM-5)
b. Iron oxide
c. Platinum
d. Nickel
The IUPAC name for CH₃-C C-CH₂OH is:
a. But-2-yn-1-ol
b. But-3-yn-4-ol
c. 1-Hydroxybut-2-yne
d. Pent-2-yn-1-ol
The compound commonly known as blue vitriol is:
a. CuSO₄ · 5H₂O
b. FeSO₄ · 7H₂O
c. MgSO₄ · 7H₂O
d. ZnSO₄ · 7H₂O
The structure of diamond is a giant covalent network where each carbon atom is bonded to:
a. Two other carbon atoms in a linear fashion
b. Three other carbon atoms in a planar fashion
c. Four other carbon atoms in a tetrahedral fashion
d. Six other carbon atoms in a hexagonal fashion
The extraction of a metal from its ore by dissolving it in a suitable chemical reagent, followed by
precipitation, is called:
a. Smelting
b. Roasting
c. Leaching (Hydrometallurgy)
d. Zone refining
The molecule that exhibits sp hybridization of the central atom is:
a. Methane (CH₄)
b. Ethene (C₂H₄)
c. Ethyne (C₂H₂)
d. Ammonia (NH₃)
A drug that is used to kill or inhibit the growth of microorganisms and is safe enough to be
applied to living tissues is called an:
a. Antipyretic
b. Analgesic
c. Antiseptic
d. Antibiotic
The inversion of cane sugar (sucrose) results in a change in the sign of optical rotation from
dextro to levo. This is because:
a. Sucrose is hydrolyzed into glucose and fructose, and fructose has a large negative rotation.
b. The reaction is exothermic.
c. Glucose is a reducing sugar.
d. The glycosidic linkage is broken.
The Bessemer converter is used in the manufacture of:
a. Pig iron
b. Steel
c. Wrought iron
d. Copper
When acetone is added to ethanol, the resulting solution shows a positive deviation from Raoult's
law. This is because:
a. New strong hydrogen bonds are formed between acetone and ethanol.
b. The intermolecular hydrogen bonds in ethanol are broken, and the new interactions are weaker.
c. The volume of the solution decreases on mixing.
d. The solution becomes ideal.
The reaction used to convert benzene diazonium chloride to fluorobenzene is:
a. Gattermann reaction
b. Sandmeyer reaction
c. Balz-Schiemann reaction
d. Stephen reaction
Match the chemical substance with its common use:
| Column I (Substance) | Column II (Use) |
|---|---|
| A. Chloroform | 1. Artificial sweetener |
| B. Aspartame | 2. Antiseptic |
| C. Iodoform | 3. Fire extinguisher |
| D. Carbon tetrachloride | 4. Anesthetic |
a. A-4, B-1, C-2, D-3
b. A-1, B-4, C-3, D-2
c. A-4, B-2, C-1, D-3
d. A-3, B-1, C-2, D-4
BOTANY (Questions 101 - 140)
1. The five-kingdom classification was proposed by:
a. Carolus Linnaeus
b. R.H. Whittaker
c. Ernst Haeckel
d. Copeland
In gymnosperms, the endosperm is formed:
a. Before fertilization
b. After fertilization
c. Simultaneously with fertilization
d. From the fusion of two polar nuclei and one male gamete
The first stable product of the C4 cycle is:
a. 3-Phosphoglyceric acid (3-PGA)
b. Ribulose-1,5-bisphosphate (RuBP)
c. Malic acid
d. Oxaloacetic acid (OAA)
When the stamens are fused by their anthers and the filaments are free, the condition is called:
a. Syngenesious
b. Synandrous
c. Monadelphous
d. Diadelphous
The movement of sugars from the source (e.g., leaf) to the sink (e.g., root or fruit) in a plant
occurs through the phloem. This process is best explained by the:
a. Cohesion-Tension Theory
b. Root Pressure Theory
c. Pressure Flow (Mass Flow) Hypothesis
d. Imbibition Theory
The swelling of a wooden door during the rainy season is due to:
a. Osmosis
b. Imbibition
c. Guttation
d. Capillarity
When a single gene can exhibit multiple phenotypic effects, the phenomenon is known as:
a. Polygenic inheritance
b. Pleiotropy
c. Epistasis
d. Co-dominance
The enzyme responsible for joining Okazaki fragments during DNA replication is:
a. DNA polymerase
b. Helicase
c. DNA ligase
d. Topoisomerase
Which plant hormone is primarily responsible for cell division?
a. Auxin
b. Gibberellin
c. Cytokinin
d. Ethylene
Radial vascular bundles are characteristic of:
a. Dicot stem
b. Monocot stem
c. Dicot root
d. Dicot leaf
The bacteria that convert nitrites to nitrates are:
a. Nitrosomonas
b. Nitrobacter
c. Azotobacter
d. Rhizobium
The net gain of ATP molecules from one molecule of glucose during glycolysis is:
a. 1
b. 2
c. 4
d. 8
A fruit that develops without fertilization is called:
a. Aggregate fruit
b. Multiple fruit
c. Parthenocarpic fruit
d. False fruit
The term "species" was coined by:
a. John Ray
b. Linnaeus
c. Aristotle
d. Theophrastus
Mycorrhiza is a symbiotic association between:
a. Fungus and roots of higher plants
b. Alga and roots of higher plants
c. Fungus and alga
d. Bacteria and roots of higher plants
The arrangement of ovules within the ovary is known as:
a. Placentation
b. Aestivation
c. Venation
d. Phyllotaxy
Which of the following is a free-living, anaerobic nitrogen-fixing bacterium?
a. Azotobacter
b. Beijerinckia
c. Rhodospirillum
d. Rhizobium
In the DNA double helix, the two strands are:
a. Parallel and complementary
b. Antiparallel and complementary
c. Parallel and non-complementary
d. Antiparallel and non-complementary
A condition where a flower can be divided into two equal halves by only one vertical plane is:
a. Actinomorphic
b. Zygomorphic
c. Asymmetric
d. Isomerous
The part of the embryo axis below the cotyledons is the:
a. Epicotyl
b. Hypocotyl
c. Radicle
d. Plumule
The most abundant organic molecule on Earth is:
a. Protein
b. Lipid
c. Cellulose
d. Nucleic acid
The organelle that is not membrane-bound is the:
a. Ribosome
b. Lysosome
c. Peroxisome
d. Mitochondrion
The site of light-dependent reactions in photosynthesis is the:
a. Stroma
b. Thylakoid membrane
c. Cytosol
d. Grana
The tendrils of a grapevine are modified:
a. Leaves
b. Roots
c. Stems
d. Stipules
The loss of water in the form of liquid droplets from the margins of leaves is called:
a. Transpiration
b. Guttation
c. Bleeding
d. Exudation
A genetic condition represented by 44 + XXY is:
a. Down's syndrome
b. Turner's syndrome
c. Klinefelter's syndrome
d. Patau's syndrome
The cell wall of fungi is primarily made of:
a. Cellulose
b. Lignin
c. Chitin
d. Peptidoglycan
An ecological pyramid that can be inverted is the pyramid of:
a. Energy
b. Biomass in a pond ecosystem
c. Numbers in a grassland ecosystem
d. Biomass in a forest ecosystem
Pollination by bats is called:
a. Ornithophily
b. Entomophily
c. Malacophily
d. Chiropterophily
The phenomenon of a plant's response to the duration of light and dark periods is:
a. Phototropism
b. Photosynthesis
c. Photoperiodism
d. Photorespiration
The pigment responsible for the reddish color to some algae is:
a. Fucoxanthin
b. Phycoerythrin
c. Chlorophyll b
d. Carotene
The gametophyte is not an independent, free-living generation in:
a. Bryophytes
b. Pteridophytes
c. Gymnosperms
d. All of the above
The technique of DNA fingerprinting was developed by:
a. Kary Mullis
b. Alec Jeffreys
c. Boyer and Cohen
d. Watson and Crick
"Golden Rice" is a genetically modified crop plant where the incorporated gene is meant for the
biosynthesis of:
a. Vitamin C
b. Vitamin A
c. Vitamin E
d. Vitamin B12
Axile placentation is found in the ovary of:
a. Pea
b. Mustard
c. Tomato
d. Sunflower
A classic example of co-dominance is:
a. Flower color in snapdragon
b. Human ABO blood groups
c. Pod shape in pea
d. Eye color in Drosophila
The meristem found at the tips of roots and shoots is the:
a. Lateral meristem
b. Intercalary meristem
c. Apical meristem
d. Secondary meristem
The process of formation of a protein from an mRNA template is called:
a. Replication
b. Transcription
c. Translation
d. Reverse transcription
Plants that grow in saline soil are called:
a. Xerophytes
b. Hydrophytes
c. Mesophytes
d. Halophytes
A color-blind man marries a woman who is a carrier for the same trait. What is the probability of
their daughter being color-blind?
a. 0%
b. 25%
c. 50%
d. 100%
ZOOLOGY (Questions 141 - 180)
1. The digestion of starch begins in the:
a. Mouth
b. Stomach
c. Small intestine
d. Large intestine
Match the blood cell with its primary function:
| Column I (Cell) | Column II (Function) |
|---|---|
| A. Neutrophil | 1. Allergic reactions |
| B. Eosinophil | 2. Phagocytosis (first responder) |
| C. Basophil | 3. Secretes histamine & heparin |
| D. Lymphocyte| 4. Immune response (antibodies) |
a. A-2, B-1, C-3, D-4
b. A-1, B-2, C-4, D-3
c. A-2, B-3, C-1, D-4
d. A-4, B-1, C-3, D-2
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1. The "dub" sound of the heart is produced by the closure of the:
a. Tricuspid and bicuspid valves
b. Semilunar valves
c. Foramen ovale
d. Eustachian valve
The number of bones in the human appendicular skeleton is:
a. 80
b. 126
c. 206
d. 60
The excretory system in insects like cockroaches is composed of:
a. Nephridia
b. Green glands
c. Flame cells
d. Malpighian tubules
Which of the following is both an endocrine and an exocrine gland?
a. Liver
b. Pituitary
c. Pancreas
d. Thyroid
The temporary endocrine gland formed after ovulation from the remnant of the Graafian follicle is
the:
a. Corpus albicans
b. Corpus callosum
c. Corpus luteum
d. Corpus striatum
The unit of natural selection is the:
a. Individual
b. Population
c. Species
d. Genus
Phenylketonuria (PKU) is an inborn error of metabolism that is:
a. X-linked recessive
b. Autosomal recessive
c. Autosomal dominant
d. Y-linked
Which of the following is a characteristic of all chordates at some stage of their life?
a. A vertebral column
b. A four-chambered heart
c. Pharyngeal gill slits
d. A muscular diaphragm
The solid mass of cells formed by the early cleavage of a zygote is the:
a. Blastocyst
b. Morula
c. Gastrula
d. Trophoblast
The Widal test is used for the diagnosis of:
a. Malaria
b. Tuberculosis
c. Typhoid
d. AIDS
The volume of air exchanged during normal quiet breathing is called:
a. Vital Capacity
b. Residual Volume
c. Tidal Volume
d. Inspiratory Reserve Volume
The longest bone in the human arm is the:
a. Radius
b. Ulna
c. Humerus
d. Clavicle
The presence of analogous structures indicates:
a. Common ancestry
b. Divergent evolution
c. Convergent evolution
d. Genetic drift
Broca's area and Wernicke's area in the human brain are associated with:
a. Vision
b. Hearing
c. Speech
d. Balance
The vector for dengue fever is the:
a. Anopheles mosquito
b. Culex mosquito
c. Aedes mosquito
d. Sandfly
The oxygen-binding pigment found in muscle cells is:
a. Hemoglobin
b. Hemocyanin
c. Myoglobin
d. Cytochrome
The part of the human eye that regulates the amount of light entering is the:
a. Cornea
b. Lens
c. Iris
d. Retina
The cells that produce antibodies are:
a. T-helper cells
b. T-killer cells
c. Macrophages
d. Plasma cells (differentiated B-cells)
The deficiency of vitamin D in children causes:
a. Scurvy
b. Rickets
c. Pellagra
d. Beri-beri
A person with blood group A can safely donate blood to individuals with blood group(s):
a. A only
b. A and AB
c. A and O
d. B and AB
The hormone responsible for the development of secondary sexual characters in males is:
a. Estrogen
b. Progesterone
c. Testosterone
d. LH
The centriole replicates during which phase of the cell cycle?
a. G1 phase
b. S phase
c. G2 phase
d. M phase
The organ of balance in invertebrates like prawns is the:
a. Statocyst
b. Radula
c. Ommatidium
d. Cnidoblast
Which of the following is a homeothermic (warm-blooded) animal?
a. Frog
b. Fish
c. Bat
d. Crocodile
The phenomenon of industrial melanism, as seen in the peppered moth, is an example of:
a. Genetic drift
b. Natural selection
c. Artificial selection
d. Mutation
The finger-like projections of the trophoblast that embed in the uterine wall are the:
a. Chorionic villi
b. Amniotic folds
c. Yolk sac
d. Allantois
The number of true ribs, false ribs, and floating ribs in humans are, respectively:
a. 7, 3, 2 pairs
b. 7, 2, 3 pairs
c. 5, 4, 3 pairs
d. 8, 2, 2 pairs
The Jurassic period of the Mesozoic era is known as the "Age of":
a. Fishes
b. Amphibians
c. Reptiles (Dinosaurs)
d. Mammals
The ornithine cycle is the process of synthesizing:
a. Uric acid in the liver
b. Ammonia in the kidneys
c. Urea in the liver
d. Creatinine in the muscles
The membranes covering the brain and spinal cord are the:
a. Pericardium
b. Pleura
c. Meninges
d. Peritoneum
The immunity conferred by a ready-made antibody injection (e.g., anti-tetanus serum) is:
a. Active natural immunity
b. Passive natural immunity
c. Active artificial immunity
d. Passive artificial immunity
The life cycle of a housefly shows:
a. No metamorphosis
b. Incomplete metamorphosis
c. Complete metamorphosis
d. Retrogressive metamorphosis
The germ layer that gives rise to the heart, muscles, and bones is the:
a. Ectoderm
b. Mesoderm
c. Endoderm
d. Notochord
Which of the following is an egg-laying mammal?
a. Kangaroo
b. Bat
c. Echidna (Spiny anteater)
d. Pangolin
The I-band of a sarcomere contains:
a. Only thick filaments
b. Only thin filaments
c. Both thick and thin filaments
d. Only the M-line
The study of tissues is called:
a. Cytology
b. Histology
c. Morphology
d. Anatomy
The LH surge is the primary trigger for:
a. Menstruation
b. Ovulation
c. Fertilization
d. Implantation
The hormone that acts on the distal convoluted tubule (DCT) to reabsorb Na⁺ is:
a. ADH
b. Aldosterone
c. Oxytocin
d. Renin
COMPLETE ANSWER KEY: CEE MODEL SET 15
Q. Ans Q. Ans Q. Ans Q. Ans
1 c 46 b 91 a 136 b
2 b 47 a 92 c 137 c
3 d 48 c 93 c 138 c
4 d 49 b 94 c 139 b
5 b 50 b 95 b 140 c
6 b 51 b 96 d 141 a
7 c 52 c 97 b 142 a
8 b 53 c 98 c 143 b
9 d 54 a 99 c 144 c
10 a 55 a 100 a 145 d
11 b 56 d 101 c 146 c
12 d 57 c 102 c 147 c
13 c 58 c 103 b 148 c
14 b 59 c 104 a 149 b
15 b 60 a 105 c 150 c
16 b 61 a 106 c 151 b
17 c 62 a 107 b 152 c
18 a 63 b 108 c 153 c
19 c 64 b 109 c 154 c
20 a 65 c 110 d 155 b
21 b 66 b 111 c 156 c
22 a 67 d 112 a 157 c
23 c 68 c 113 a 158 c
24 b 69 c 114 c 159 c
25 c 70 c 115 d 160 d
26 a 71 d 116 a 161 b
27 d 72 c 117 c 162 b
28 d 73 c 118 b 163 c
29 b 74 a 119 b 164 b
30 c 75 c 120 c 165 a
31 b 76 d 121 d 166 c
32 b 77 b 122 c 167 c
33 a 78 c 123 a 168 a
34 c 79 a 124 b 169 a
35 b 80 c 125 c 170 c
36 b 81 b 126 c 171 c
37 a 82 c 127 c 172 c
38 a 83 c 128 b 173 d
39 c 84 c 129 d 174 c
40 c 85 b 130 c 175 b
41 a 86 a 131 b 176 c
42 a 87 d 132 d 177 c
43 c 88 b 133 c 178 b
44 a 89 c 134 b 179 c
45 b 90 a 135 c 180 b
