Physics-Section-A
1. The energy density in a wire which is under stress is given by:
1.
\({\Large\frac12}\text{(stress)}^2\)
2.
\({\Large\frac12}\text{(strain)}^2\)
3.
\({\Large\frac12}\text{(stress)}\times\text{(strain)}\)
4.
\({\Large\frac{1}{2}\frac{\text{(stress)}^2}{\text{strain}}}\)
2. A particle moves from a point \(\left(\right. - 2 \hat{i} + 5 \hat{j} \left.\right)\) to \(\left(\right. 4 \hat{j} + 3 \hat{k} \left.\right)\) when a force of \(\left(\right. 4 \hat{i} + 3 \hat{j} \left.\right)\) \(\text{N}\) is applied. How much work has been done by the force?
| 1. |
\(8\) J |
2. |
\(11\) J |
| 3. |
\(5\) J |
4. |
\(2\) J |
3. A block moving horizontally on a smooth surface with a speed of \(80\) m/s splits into two equal parts. If one of parts moves at \(60\) m/s in the same direction, then the fractional change in the kinetic energy of the system will be equal to:
1. \(16\)
2. \(8\)
3. \(\dfrac{1}{8}\)
4. \(\dfrac{1}{16}\)
4. Monoatomic and diatomic ideal gases are filled into the two compartments of an insulated vessel as shown in the figure. Their initial pressures, volumes and temperatures are
\(P_0,V_0\) and
\(\theta_1\) (see figure). Thereafter, they are allowed to mix by removing the partition. The final temperature is
\(\theta_2.\) Then:
1.
\(\theta_1=\theta_2\)
2.
\(2\theta_1=\theta_2\)
3.
\(\theta_1=2\theta_2\)
4.
\(\theta_1=4\theta_2\)
5. A submarine having a fixed volume is floating submerged underwater. Air, at high pressure, is pumped into the submarine using pipes. Due to this, the submarine will:
| 1. |
rise. |
| 2. |
sink. |
| 3. |
float in the same position. |
| 4. |
either rise or sink depending on the air pressure. |
6. A uniform ladder of mass
\(10\) kg is placed at an angle against a frictionless vertical wall, as shown in the figure, by applying a horizontal
force \(F\) at the
bottom \((B)\) of the ladder, towards the wall.
(Take \(g=10\) m/s2).
Assume that the ground is frictionless. The force
\(F\) equals:
| 1. |
\(100\sqrt3\) N |
2. |
\(50\sqrt3\) N |
| 3. |
\(\dfrac{100}{\sqrt3}\) N |
4. |
\(\dfrac{50}{\sqrt3}\) N |
7. An increase in the temperature of a gas-filled container would lead to:
| 1. |
decrease in intermolecular distance. |
| 2. |
increase in its mass. |
| 3. |
increase in its kinetic energy. |
| 4. |
decrease in its pressure. |
8. A satellite is orbiting just above the surface of the earth with period \(T.\) If \(d\) is the density of the earth and \(G\) is the universal constant of gravitation, the quantity \(\frac{3 \pi}{G d}\) represents:
1. \(\sqrt{T}\)
2. \(T\)
3. \(T^2\)
4. \(T^3\)
9. A slab of stone with an area \(0.36~\text{m}^{2}\) and thickness of \(0.1~\text{m}\) is exposed on the lower surface to steam at \(100^\circ\text{C}.\) A block of ice at \(0^{\circ}\text{C}\) rests on the upper surface of the slab. In one hour \(4.8~\text{kg}\) of ice is melted. The thermal conductivity of the slab will be:
(Given latent heat of fusion of ice \(= 3.36\times10^{5}~\text{JKg}^{-1}\))
1. \(1.29~\text{J/m/s/}^{\circ}\text{C}\)
2. \(2.05~\text{J/m/s/}^{\circ}\text{C}\)
3. \(1.02~\text{J/m/s/}^{\circ}\text{C}\)
4. \(1.24~\text{J/m/s/}^{\circ}\text{C}\)
10. The velocity of a particle depends upon the time
\(t\) according to the equation:
\({v}{=}\sqrt{ab}{+}{bt}{+}\frac{c}{{d}{+}{t}}\)
The physical quantities are represented by
\(a,b,c\) and
\(d\) are in the order:
| 1. |
distance, distance, acceleration, time |
| 2. |
distance acceleration, distance, time |
| 3. |
acceleration, distance, distance, time |
| 4. |
none of the above |
11. An elastic ball rebounds vertically to a height
\(h\) above the ground, the period of its motion will be:
| 1. |
\(\begin{aligned} \large\sqrt\frac{2h}{g} & \\ \end{aligned}\) |
2. |
\(\begin{aligned} \large\sqrt\frac{8h}{g} & \\ \end{aligned}\) |
| 3. |
\(\begin{aligned} \large\sqrt\frac{h}{2g} & \\ \end{aligned}\) |
4. |
\(\begin{aligned} 2\large{\sqrt\frac{h}{g}} & \\ \end{aligned}\) |
12. A stopper is swung on a string, one end of which is fixed at a point
\(P\). The diagram shows the stopper and string from the top, and the stopper is swinging counterclockwise at a constant speed.
Which arrow best shows the direction of the velocity vector?
| 1. |
\(A\) |
2. |
\(B\) |
| 3. |
\(C\) |
4. |
\(D\) |
13. A block of mass \(10~\text{kg}\) is in contact with the inner wall of a hollow cylindrical drum of radius \(1~\text{m}.\) The coefficient of friction between the block and the inner wall of the cylinder is \(0.1.\) The minimum angular velocity needed for the cylinder, which is vertical and rotating about its axis, will be:
\(\left(g= 10~\text{m/s}^2\right )\)
1. \(10~\pi~\text{rad/s}\)
2. \(\sqrt{10}~\pi~\text{rad/s}\)
3. \(\frac{10}{2\pi}~\text{rad/s}\)
4. \(10~\text{rad/s}\)
14. A man of mass m climbs a rope of length \(L\) suspended below a balloon of mass \(M\). The balloon is stationary with respect to the ground. If the man begins to climb up the rope at velocity \({\overrightarrow{v}}_{rel}\) (relative to rope), in what direction and with what speed (relative to ground) will the balloon move?
1. \(\overrightarrow{{V}}=\frac{m}{M}{\overrightarrow{v}}_{rel}\)
2. \(\overrightarrow{{V}}={-}\frac{m}{M}{\overrightarrow{v}}_{rel}\)
3. \(\overrightarrow{{V}}=-\frac{m}{\left({{m}+{M}}\right)}{\overrightarrow{v}}_{rel}\)
4. \(\overrightarrow{{V}}=+\frac{m}{\left({{m}+{M}}\right)}{\overrightarrow{v}}_{rel}\)
Physics-Section-B
15. The following diagram represents three vectors of equal magnitudes in a plane.
What arrow best represents the direction of the sum of three vectors?
1.
\(\rightarrow\)
2.
\(\leftarrow\)
3.
\(\uparrow\)
4.
\(\downarrow\)
16. A ball strikes against the floor and returns with double the velocity. In which type of collision is it possible?
1. Perfectly elastic
2. Inelastic
3. Perfectly inelastic
4. It is not possible
17. Two
\(1~\text{kg}\) blocks are connected by a light inextensible string and the system is suspended by a spring of stiffness
\(1000~\text{N/m}.\) Take
\(g=10~\text{m/s}^2\)
If the string connecting the blocks is cut, the acceleration of the upper block will be (immediately after the cut):
1. zero
2.
\(10~\text{m/s}^2\) upward
3.
\(5~\text{m/s}^2\) upward
4.
\(10~\text{m/s}^2\) downward
18. The figure shows a ball (from the top view) rolling on a table with a partial hoop. Which arrow best describes the path of the ball after it leaves the hoop?
19. A ball, thrown vertically upward, is observed to move upward with a speed
\(v_1\) at time
\(t_1\) and a speed
\(v_2,\) downward, at time
\(t_2.\)
The average velocity of the ball during the motion is (downward):
| 1. |
\(\large\frac{v_2-v_1}{2}\) |
2. |
\(\large\frac{v_2+v_1}{2}\) |
| 3. |
\({v_2-v_1}\) |
4. |
\({v_2+v_1}\) |
20. Match the units of some physical quantities in
List-I with their corresponding dimensions in
List-II.
| List-I |
List-II |
| (a) |
Ohm |
(i) |
\([ML^2T^{-2}A^{-1}]\) |
| (b) |
Farad |
(ii) |
\([ML^2T^{-2}A^{-2}]\) |
| (c) |
Henry |
(iii) |
\([M^{-1}L^{-2}T^4A^2]\) |
| (d) |
Weber |
(iv) |
\([ML^2T^{-3}A^{-2}]\) |
| 1. |
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii) |
| 2. |
(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii) |
| 3. |
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv) |
| 4. |
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) |
Chemistry-Section-A
21. Match the compounds in column I with the oxidation states of Cl in column II.
| Column I(Compound) |
Column II(Oxidation state) |
| a. Cl2O7 |
i. +4 |
| b. NaClO3 |
ii. +1 |
| c. Cl2O |
iii. +5 |
| d. ClO2 |
iv. +7 |
Options:
|
a |
b |
c |
d |
| 1. |
iii |
iv |
ii |
i |
| 2. |
ii |
iii |
iv |
i |
| 3. |
iv |
iii |
ii |
i |
| 4. |
iv |
i |
iii |
ii |
22. In which of the following neutralisation reactions, rise in temperature of the solution will be the highest?
1. 100 ml 0.1 M HCl + 150 ml 0.1 M NaOH
2. 50 ml 0.1 M HCl + 50 ml 0.1 M NaOH
3. 300 ml 0.1 M HCl + 400 ml 0.1 M NaOH
4. 75 ml 0.1 M HCl + 50 ml 0.1 M NaOH
23. The bond dissociation energies of
XY,
X2, and
Y2 (all diatomic molecules) are in the ratio of 1 : 1: 0.5 and
\( \Delta H_{f}\) for the formation of
XY is -200 kJ mol
-1. The bond dissociation energy of
X2 will be:
1. 400 kJ mol-1
24. The decreasing order of the rate of the electrophilic aromatic substitution reaction is:
1. B > C > A > D > E
2. A > B > C > D > E
3. E > D > C > B > A
4. A > B > D > C > E
25. Find the volume strength of solution.
1. 8.96
2. 2.16
3. 9.16
4. 5.14
26. Which of the following statements is not correct about diborane?
| 1. |
Both the boron atoms are sp2 hybridised. |
| 2. |
There are two 3-centre-2-electron bonds. |
| 3. |
The four terminal B-H bonds are 2-centre-2-electron bonds. |
| 4. |
The four terminal hydrogen atoms and the two boron atoms lie in one plane. |
27. Identify the incorrect statement among the following:
| 1. |
The valence electron and valency are the same for group 1. |
| 2. |
p-block elements exhibit properties of metals, nonmetals, and metalloids. |
| 3. |
Noble gases, excluding He, typically possess 8 valence electrons. |
| 4. |
Ne is considered the smallest atom in the periodic table |
28. The correct statement, among the following, regarding hybridization is:
| 1. |
The hybridized orbitals have different energies for each orbital |
| 2. |
The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridized |
| 3. |
Hybrid orbitals form multiple bonds |
| 4. |
The orbitals with different energies undergo hybridization |
29. The order of stability of the following carbanions is:
| 1. I>II>III>IV |
2. I>III>II>IV |
| 3. IV>III>II>I |
4. III>IV>I>II |
30. The potential energy of an electron present in Li+2 is:
1. \(\frac{e^{2}}{2 \pi \varepsilon_{0} r^{}}\)
2. \(\frac{3e^{2}}{4 \pi \varepsilon_{0} r^{}}\)
3. \(\frac{-2e^{2}}{4 \pi \varepsilon_{0} r^{}}\)
4. \(\frac{-3 e^{2}}{4 \pi \varepsilon_{0} r{}}\)
31. The incorrect statement among the following is:
1. All alkali metals are silvery white.
2. The density of potassium is less than that of sodium.
3. Compounds of group-1 elements are diamagnetic.
4. The melting point of group-1 elements increases down the group.
32. The elements A (atomic weight = 75) and B (atomic weight = 32) combine to form a compound X. If 3 moles of B combine with 2 moles of A to produce 1 mole of X, the weight of 5 moles of X will be:
1. 246 gm
2. 1230 amu
3. 1.23 kg
4. None of the above
33. A sample of a given mass of a gas at a constant temperature occupies 95cm3 under a pressure of . At the same temperature, the volume at a pressure of is [Bihar CEE 1992]
1. 190 cm3
2. 93 cm3
3. 46.5 cm3
4. 47.5 cm3
34. The living organisms on or around the earth constitute
(1) Biome
(2) Biosphere
(3) Community
(4) Biocoenosis
Chemistry-Section-B
35. The values of H and S for the given reaction are 170 kJ and 170 JK–1, respectively.
\(\mathrm{C} \text { (graphite) }+\mathrm{CO}_2(\mathrm{~g}) \rightarrow 2 \mathrm{CO}(\mathrm{g})\)
This reaction will be spontaneous at:
1. 710 K
2. 910 K
3. 1110 K
4. 510 K
36. The set of molecules having zero dipole moment is:
1. \(\mathrm{NF}_3, \mathrm{CO}_2, \mathrm{CCl}_4 \)
2. \(\mathrm{BF}_3, \mathrm{H}_2 \mathrm{S}, \mathrm{CCl}_4 \)
3. \(\mathrm{BF}_3, \mathrm{CO}_2, \mathrm{CCl}_4\)
4. \(\mathrm{BF}_3, \mathrm{CO}_2, \mathrm{CHCl}_3 \)
37. The correct order of first ionization enthalpy for the given four element is:
| 1. |
C < N < F < O |
2. |
C < N < O < F |
| 3. |
C < O < N < F |
4. |
C < F < N < O |
38. The radius of the second Bohr orbit for hydrogen atom is:
(Planck's Const. h = 6.6262 × 10–34 Js; mass of electron = 9.1091 × 10–31 kg; charge of electron e = 1.60210 ×10–19 C; permittivity of vaccum ∈0 = 8.854185 ×10–12 kg–1m–3A2)
1. 0.529 Å
2. 2.12 Å
3. 1.65 Å
4. 7.76 Å
39. The kinetic energy in kcal of 80 gms of methane gas at 227°C is
(1) 15
(2) 2.5
(3) 25
(4) 7.5
40. 2.5 litre mixture of CO and CO2 is passed through red hot charcoal in a tube. The new volume becomes 3.5 litre. All measurements are made at same temperature and pressure. Percentage composition of original mixture by volume will be:
1. CO = 50%, CO2 = 50%
2. CO = 60%, CO2 = 40%
3.CO = 40%, CO2 = 60%
4.CO = 20%, CO2 = 80%
Biology-I-Section-A
41. Identify the plant, anecdotally known as the "terror of Bengal" due to its invasive growth tendencies, that was introduced into India as an ornamental plant:
1.
Parthenium hysterophorus
2.
Lantana camara
3.
Eicchornia crassipes
4.
Acacia dealbata
42. The glycolytic pathway has an investment of 2 ATP molecules. At which of the following steps is the debt paid off?
| 1. |
Conversion of Glucose into Glucose-6-phospahte |
| 2. |
Conversion of Fructose-6-phosphate into Fructose 1,6-biphospahte |
| 3. |
Conversion of 1,3 biphoshoglyceric acid into 3-phosphoglyceric acid |
| 4. |
Conversion of Phosphoenol pyruvate into Pyruvic acid |
43. Given below are two statements : one is labelled as Assertion
(A) and the other is labelled as Reason
(R).
| Assertion (A): |
Saprophytes play a vital role in the ecosystem. |
| Reason (R): |
Saprophytes are accorded the highest trophic level in a food chain or a food web. |
In the light of the above statements, choose the most appropriate answer from the options given below :
| 1. |
Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. |
Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. |
(A) is True but (R) is False. |
| 4. |
Both (A) and (R) are False. |
44. Study the given diagram and select the correct option:
| 1. |
The karyotype is of an individual suffering from Down’s syndrome |
| 2. |
The number of autosomes seen is 43 |
| 3. |
The genetic sex of this individual must be female |
| 4. |
The fertility will be maintained in this individual |
45. If N is the population density at time t, then its density at time t +1 is [B is births; I is immigration;
D is deaths; E is emigration]:
1. Nt+1 = Nt + [(B + I) – (D + E)]
2. Nt+1 = Nt + [(B + I) + (D + E)]
3. Nt+1 = Nt + [(B + I) (D + E)]
4. Nt+1 = Nt + [(B + I) / (D + E)]
46. Consider the given two statements:
| Assertion (A): |
Inbreeding increases the chances of offspring being affected by recessive traits. |
| Reason (R): |
Inbreeding increases the proportion of homozygous individuals in a population. |
| 1. |
Both (A) and (R) are True and (R) correctly explains the (A). |
| 2. |
Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 3. |
(A) is True but (R) is False. |
| 4. |
Both (A) and (R) are False. |
47. The decline in the population of Indian native fishes due to the introduction of Clarias gariepinus in river Yamuna can be categorised as:
1. Co-extinction
2. Habitat fragmentation
3. Over exploitation
4. Alien species invasion
48. The number of correct statements regarding sponges are:
| I: |
In sponges, food is digested in the spongocoel. |
| II: |
When sponges reproduce asexually by buds, these are called gemmules |
| III: |
Sponge bodies are organized at the tissue level of structure. |
| IV: |
The collar of the collar cell is composed of microvilli. |
1. 1
2. 2
3. 3
4. 4
49. Identify the correct statements regarding chemiosmotic hypothesis:
| (a) |
Splitting of the water molecule takes place on the inner side of the membrane. |
| (b) |
Protons accumulate within the lumen of the thylakoids. |
| (c). |
The primary acceptor of electrons transfers the electrons to an electron carrier. |
| (d) |
NADP reductase enzyme is located on the stroma side of the membrane. |
| (e) |
Protons increase in number in stroma. |
Choose the correct answer from the options given below:
| 1. |
(a), (b) and (e) |
2. |
(a), (b) and (d) |
| 3. |
(b), (c) and (d) |
4. |
(b), (c) and (e) |
50. For the commercial and industrial production of Citric Acid, which of the following microbes is used?
1. Aspergillus niger
2. Lactobacillus sp
3. Saccharomyces cerevisiae
4. Clostridium bretylium
51. Seed germination is inhibited by ABA in antagonism with:
1. Auxins
2. Ethylene
3. Kinetins
4. GAs
52. Consider the given two statements:
| Assertion(A): |
Only the central cell in the embryo sac of angiosperms is diploid. |
| Reason (R): |
It is formed from an unreduced diploid mother cell. |
| 1. |
Both (A) and (R) are True and (R) correctly explains (A). |
| 2. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. |
(A) is True; (R) is False |
| 4. |
Both (A) and (R) are False |
53. Plants obtain Iron in the form of
(1) Ferric ions
(2) Ferrous ions
(3) FeO
(4) Both B and C
54. What is incorrect for UTR?
1. Present in between the translational unit in mRNA
2. Not recognised by any tRNA
3. Required for efficient translation process
4. Provide stability to mRNA
Biology-I-Section-B
55. Identify the incorrectly matched pair:
|
Placentation |
Example |
| 1. |
Marginal |
Pea |
| 2. |
Axile |
China rose |
| 3. |
Parietal |
Primrose |
| 4. |
Basal |
Marigold |
56. Anatomically, fairly old dicotyledonous root is distinguished from the dicotyledonous stem by:
1. absence of secondary xylem
2. absence of secondary phloem
3. presence of cortex
4. position of protoxylem
57. Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
|
A |
B |
C |
D |
| 1. |
Equisetum |
Ginkgo |
Selaginella |
Lycopodium |
| 2. |
Selaginella |
Equisetum |
Salvinia |
Ginkgo |
| 3. |
Funaria |
Adiantum |
Salvinia |
Riccia |
| 4. |
Chara |
Marchantia |
Fucus |
Pinus |
58. According to the widely accepted "fluid mosaic model", cell membranes are semi-fluid, where lipids and integral proteins can diffuse randomly. In recent years, this model has been modified in several respects. In this regard, which of the following statements is incorrect:
| 1. |
Proteins can also undergo flip-flop movements in the lipid bilayer |
| 2. |
Many proteins remain completely embedded within the lipid bilayer |
| 3. |
Proteins in cell membranes can travel within the lipid bilayer |
| 4. |
Proteins can remain confined within certain domains of the membrane |
59. The correct differences between the members of ascomycetes and basidiomycetes will include:
|
Ascomycetes |
Basidiomycetes |
| I: |
Mycelium is branched and septate. |
Mycelium is aseptate and coenocytic. |
| II: |
Asexual spores are conidia. |
Asexual spores are zoospores. |
| III: |
Sexual spores are produced endogenously in sac like asci. |
Sexual spores are exogenously produced on the basidium. |
| 1. |
None |
2. |
Only I and II |
| 3. |
I, II and III |
4. |
Only III |
60. Consider the given two statements:
| Statement I: |
Classification of living organisms is important to make study of living organisms possible. |
| Statement II: |
Classification is the process by which anything is grouped into convenient categories based on some easily observable characters. |
1.
Statement I is correct;
Statement II is incorrect
2.
Statement I is correct;
Statement II is correct
3.
Statement I is incorrect;
Statement II is incorrect
4.
Statement I is incorrect;
Statement II is correct
Biology-II-Section-A
61. Identify the correct statements:
| I: |
The reproductive cycle in the non-primate female mammals is called menstrual cycle. |
| II: |
The first menstruation begins at puberty and is called menarche. |
| III: |
In human females, menstruation is repeated at an average interval of about 28/29 days, and the cycle of events starting from one menstruation till the next one is called the menstrual cycle. |
1. Only
I and
II
2. Only
I and
III
3. Only
II and
III
4.
I,
II and
III
62. Match the following:
| (a) |
Inhibitor of catalytic activity of succinate dehydrogenase |
(i) |
Ricin |
| (b) |
Possess peptide bonds |
(ii) |
Malonate |
| (c) |
Cell wall material in fungi |
(iii) |
Chitin |
| (d) |
Secondary metabolite |
(iv) |
Collagen |
Choose the correct option from the following:
|
(a) |
(b) |
(c) |
(d) |
| 1. |
(iii) |
(i) |
(iv) |
(ii) |
| 2. |
(iii) |
(iv) |
(i) |
(ii) |
| 3. |
(ii) |
(iii) |
(i) |
(iv) |
| 4. |
(ii) |
(iv) |
(iii) |
(i) |
63. Panspermia, an idea that is still a favorite for some astronomers, means:
| 1. |
Creation of life from dead and decaying matter |
| 2. |
Creation of life from chemicals |
| 3. |
Origin of sperm in human testes |
| 4. |
Transfer of spores as a unit of life from other planets of Earth |
64.
| Assertion (A): |
Ketonuria is seen in persons with diabetes mellitus. |
| Reason (R): |
Persons with diabetes mellitus also have glycosuria. |
| 1. |
Both (A) and (R) are True (R) does not correctly explain (A). |
| 2. |
(A) is True but (R) is False. |
| 3. |
Both (A) and (R) are True and (R) correctly explains (A). |
| 4. |
(A) is False but (R) is True. |
65. Cocaine, commonly called as coke or crack is obtained from
1. Papaver somniferum
2. Erythroxylon
3. Cannabis sativa
4. Claviceps purpura
66. Embryo with more than 16 blastomeres formed due to in vitro fertilisation is transferred into?
1. uterus
2. fallopian tube
3. fimbriae
4. cervix
67. Goblet cells, present in alimentary canal, are used in:
1. Absorption
2. Protection
3. Secretion of mucus
4. Contraction
68. Consider the given two statements:
| Assertion (A): |
The amount of CO2 that can diffuse through the diffusion membrane per unit difference in partial pressure is much higher compared to that of O2. |
| Reason (R): |
Haemoglobin does not play any role in the transport of carbon dioxide in human blood. |
| 1. |
(A) is True but (R) is False |
| 2. |
Both (A) and (R) are True and (R) correctly explains (A) |
| 3. |
Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. |
(A) is False but (R) is True |
69. All the following are peptide hormones except:
| 1. |
Insulin |
2. |
ADH |
| 3. |
Somatostatin |
4. |
Adrenaline |
70. During shortening of the muscle, i.e., contraction:
| I: |
the ‘I’ bands get reduced |
| II: |
the ‘A’ bands retain the length |
1. Only
I is correct
2. Only
II is correct
3. Both
I and
II are correct
4. Both
I and
II are incorrect
71. The ionic gradients across the resting axonal membrane are maintained by:
| 1. |
the passive transport of sodium and potassium ions through membrane channels. |
| 2. |
the passive transport of sodium and chloride ions through membrane channels. |
| 3. |
the active transport of ions by the sodium-potassium pump which transports 3 Na+ outwards for 2 K+ into the cell. |
| 4. |
the active transport of ions by the sodium-chloride pump which transports 3 Na+ outwards for 2 Cl- into the cell. |
72. Which of the following is commonly used as a vector for introducing a DNA fragment in human Lymphocytes?
1. Retrovirus
2. Ti plasmid
3. λ phage
4. pBR 322
73. Consider the two statements:
| Assertion (A): |
The human heart is called as myogenic. |
| Reason (R): |
The human heart is made up of cardiac muscles. |
| 1. |
Both (A) and (R) are True and (R) correctly explains (A). |
| 2. |
(A) is True but (R) is False. |
| 3. |
Both (A) and (R) are True but (R) does not correctly explain (A). |
| 4. |
(A) is False but (R) is True. |
74. The enzyme used in PCR:
| I: |
is a DNA-dependent DNA polymerase |
| II: |
extends the primers in template independent manner |
| III: |
is thermostable |
| 1. |
Only I and II are correct |
| 2. |
Only I and III are correct |
| 3. |
Only II and III are correct |
| 4. |
I, II and III are correct |
Biology-II-Section-B
75. Consider the two statements:
| Statement I: |
When swallowing, the soft palate would have to move downward in order to prevent food from entering the lungs. |
| Statement II: |
When swallowing the epiglottis allows the food to enter the larynx. |
1. Statement I is correct: Statement II is incorrect
2. Statement I is incorrect: Statement II is correct
3. Statement I is correct: Statement II is correct
4. Statement I is incorrect: Statement II is incorrect
76. The famous Watson-Crick model is an example of:
1. one of the primary structures exhibited by DNA.
2. one of the secondary structures exhibited by DNA.
3. one of the tertiary structures exhibited by DNA.
4. one of the quaternary structures exhibited by DNA.
77. A pair of oviducts arising from the ovaries in female frogs:
| 1. |
join to form a single median duct that opens into the cloaca. |
| 2. |
opens into the cloaca separately. |
| 3. |
opens separately to the exterior through the skin. |
| 4. |
join to form a single median duct that opens into Bidder’s canal. |
78. The volume of blood pumped out by each ventricle per minute is called as the:
1. stroke volume
2. ejection fraction
3. cardiac output
4. end diastolic volume
79. Select the option which shows the correct matching of animal with excretory organs and excretory product:
|
Animal |
Excretory organs |
Excretory product |
| 1. |
Labeo (Rohu) |
Nephridial tubes |
Ammonia |
| 2. |
Salamander |
Kidney |
Urea |
| 3. |
Peacock |
Kidney |
Urea |
| 4. |
Housefly |
Renal tubules |
Uric acid |
80. Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because?
| 1. |
there is a negative pressure in the lungs |
| 2. |
there is a negative intrapleural pressure pulling at the lung walls |
| 3. |
there is a positive intrapleural pressure |
| 4. |
pressure in the lungs is higher than the atmospheric pressure |
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