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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
How many bands are seen when immunoglobulin G molecules are analysed on a sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) under reducing conditions ?A. 6B. 1C. 2D. 4 |
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Answer» Correct Answer - C On SDS-PAGE of IgG two principal Bands are visible |
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| 52. |
Mitochondrial cristae are infoldings of theA. Outer membrane and they increase the surface areB. Outer membrane and they decrease the surface areaC. Inner membrane and they increase the surface areaD. Inner membrane and they decrease the surface area |
| Answer» Correct Answer - C | |
| 53. |
Which one of the following combination of molecular masses of polypeptides are obtained from purified human IgM when analysed on sodium dedecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE) under reducing conditionsA. 55kDa,15kDaB. 70kDa,25 kDa, 15 kDaC. 55 kDa,25 kDaD. 155kDa |
| Answer» Correct Answer - B | |
| 54. |
The mitochondrial inner membrane consists of a number of infoldings called cristae. The increased surface area due to cristae helps in :A. Increasing the volume of mitochondriaB. Incorporating more of the protein complexes essential for electron transport chainC. Changing the pHD. Increasing diffusion of ions |
| Answer» Correct Answer - B | |
| 55. |
The peptidoglycans of bacteria consist ofA. sugars, D-amino acids and L-amino acidsB. sugars and only D-amino acidsC. sugars and only L-amino acidsD. sugars and glycine |
| Answer» Correct Answer - A | |
| 56. |
The pH of the avian blood is maintained byA. `HCO_(3)^(-)`B. `H_(2)PO_(4)^(-)`C. `CH_(3)COO^(-)`D. `Cl^(-)` |
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Answer» Correct Answer - a pH of Blood of bird is maintain by `HCO_(3)^(-)` |
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| 57. |
whichone of the following is incapable of curing pellagra ?A. NiacineB. NicotineC. NicotinamideD. Tryptophan |
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Answer» Correct Answer - b Pellagran can be cure by - Niacine - Nicotinamid - Tryptophan |
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| 58. |
Which one of the following is incapable of curing Pellagra? (A) Niacine (B) Nicotine (C) Nicotinamide (D) Tryptophan |
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Answer» Correct Option :- (B) Nicotine Explanation :- Pellagra can be cure by – Niacine –Nicotinamide – Tryptophan |
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| 59. |
In Escherichia coli, how many codons code for the standard amino-acids? (A) 64 (B) 60 (C) 61 (D) 20 |
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Answer» Correct Option :- (C) 61 Explanation :- In all living organisms, there are 64 codons and 3 codons are stop or termination codons i.e. UAA, UAG & UGA which do not code for any amino acids. |
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| 60. |
Chipko movement in the year 1974 in Garhwal Himalayas involved (A) protecting tigers (B) preventing soil erosion by planting trees (C) preventing pollution by closing down industries (D) hugging trees to prevent the contractors from felling them |
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Answer» Correct Option :- (D) hugging trees to prevent the contractors from felling them Explanation :- Chipko movement was headed by social activist Sunder Lal Bahuguna in Uttarakhand to save trees from felling. |
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| 61. |
Chipko movement in the year 1974 in Garhwal Himalayas involvedA. Protecting tigersB. Preventing soil erosion by planting treesC. Preventing pollution by closing down industriesD. Hugging trees to pervent the contractors from felling them |
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Answer» Correct Answer - d Chiko movement was headed by social activist sunder Lal Bahuguna in Uttarakhand to save trees from felling. |
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| 62. |
A piece of hot copper at `100^(@)`C is plunged into a pond at `30^(@)`C. The copper cools down to `30^(@)`C, while the pond, being huge, stays at its initial temperature. Then-A. copper loses some entropy, the pond stays at the same entropyB. copper loses some entropy, and the pond gains exactly the same amount of entropyC. copper loses entropy, and the pond gains more than this amount of entropyD. both copper and the pond gain in entropy |
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Answer» Correct Answer - C |
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| 63. |
A piece of hot copper at 100ºC is plunged into a pond at 30ºC. The copper cools down to 30ºC, while the pond, being huge, stays at its initial temperature. Then- (A) copper loses some entropy, the pond stays at the same entropy (B) copper loses some entropy, and the pond gains exactly the same amount of entropy (C) copper loses entropy, and the pond gains more than this amount of entropy (D) both copper and the pond gain in entropy |
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Answer» Correct Option :- (C) copper loses entropy, and the pond gains more than this amount of entropy Explanation :- Using theory of entropy it is evident that answer is (C). |
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| 64. |
A closed bottle containing water at `30^(@)C` is open on the surface of the moon. Then -A. the water will boilB. the water will come as a spherical ballC. the water will freezeD. the water will decompose into hydrogen and oxygen |
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Answer» Correct Answer - A |
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| 65. |
A simple pendulum of length `l` is made to oscillate with an amplitude of 45 degrees. The acceleration due to gravity is g. Let `T_(0) = 2pi sqrt(l//g)` . The time period of oscillation of this pendulum will be -A. `T_(0)` irrespective of the amplitudeB. slightly less than `T_(0)`C. slightly more than `T_(0)`D. dependent on whether it swings in a plane aligned with the north-south or east-west directions |
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Answer» Correct Answer - C |
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| 66. |
The boiling points of 0.01 M aqueous solution of sucrose, NaCl and CaCl2 would be - (A) the same (B) highest for sucrose solution (C) highest for NaCl solution (D) highest for CaCl2 solution |
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Answer» Correct Option :- (D) highest for CaCl2 solution Explanation :- Q Elevation of boiling point is proportional to the no. of foreign species. CaCl2 → Ca2+ + 2Cl– ; 3 NaCl → Na+ + Cl– ; 2 Sucrose remains an dissociated mostly ; 1 |
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| 67. |
Bacteria can survive by absorbing soluble nutrients via their outer body surface, but animals cannot, because (A) Bacteria cannot ingest particles but animals can (B) Bacteria have cell walls and animals do not (C) Animals have too small a surface area per unit volume as compared to bacteria(D) Animals cannot metabolize soluble nutrients |
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Answer» Correct Option :- (C) Animals have too small a surface area per unit volume as compared to bacteria |
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| 68. |
Bacteria can survive by absorbing soluble nutrients via their outer body surface, but animals cannot, because(A) Bacteria cannot ingest particles but animals can(B) Bacteria have cell walls and animals do not(C) Animals have too small a surface area per unit volume as compared to bacteria(D) Animals cannot metabolize soluble nutrients |
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Answer» Correct option: (C) Animals have too small a surface area per unit volume as compared to bacteria |
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| 69. |
The higher stabilities of tert-butyl cation over isopropyl cation, and trans-2-butene over propene, respectively, are due to orbital interactions involving (A) σ→π and σ→π* (B) σ → vacant p and π → π* (C) σ→σ* and σ→π (D) σ → vacant p and σ → π* |
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Answer» Correct option (D) σ → vacant p and σ → π* Explanation: In t – butyl cation hyper conjugation takes place due to σ-P conjugation and in trans-2-butene hyper conjugation takes place between σ & π∗ orbitals. |
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| 70. |
Positive point charges are placed at the vertices of a star shape as shown in the figure. Direction of the electrostatic force on a negative point charge at the centre O of the star is A. towards rightB. vertically upC. towards leftD. vertically down |
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Answer» Correct Answer - A |
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| 71. |
The number of electrons plus neutrons in `_(19)^(40)K^(+)` is-A. 38B. 59C. 39D. 40 |
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Answer» Correct Answer - C `_(19)^(40)K^(+)` Neutrons=21, Electron =18, 21+18=39 |
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| 72. |
The major product in the following reaction at `25^(@)C` is- `CH_(3)C-COOHoverset(CH_(3)CH_(2)NH_(2))to`A. `CH_(3)CONHCH_(2)CH_(2)`B. `CH_(3)CH=NCH_(2)CH_(3)`C. `NH_(3)^(+)CH_(2)CH_(3)COO^(-)`D. CH_(3)CON=CHCH_(3)` |
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Answer» Correct Answer - A `H_(3)C-COOHoverset(CH_(3)CH_(2)NH_(2))toH_(3)C-COO^(-).overset(+)NH_(3)-CH_(2)CH_(3)toH_(3)C-CO-NH-CH_(2)-CH_(3)` |
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| 73. |
Among the following, the most basic oxide is-A. `Al_(2)O_(3)`B. `SiO_(2)`C. `P_(2)O_(5)`D. `Na_(2)O` |
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Answer» Correct Answer - D `overset(Na_(2)OgtAl_(2)O_(3)geSio_(2)gtP_(2)O_(5))to` Basic Nature `darr` |
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| 74. |
The major product in the following reaction is- `H_(3)C-C-=C-H+2HBr(excess)`A. B. `H_(3)C-overset(Br)overset(|)underset(Br)underset(|)(C)-CH_(3)`C. `H_(3)C-overset(H)underset(Br)underset(|)(C)-underset(Br)underset(|)(C)H_(2)`D. |
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Answer» Correct Answer - B `H_(3)C-C-=C-Hoverset(HBr)toH_(3)C-underset(Br)underset(|)C=overset(H)overset(|)C-Hoverset(HBr)toH_(3)C-underset(Br)underset(|)overset(Br)overset(|)C-CH_(3)` |
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| 75. |
The value of 'x' in KAl(SO4)x.12H2O is – (A) 1 (B) 2 (C) 3 (D) 4 |
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Answer» Correct option (B) 2 Explanation: KAl(SO4)x.12H2O, x = 2 |
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| 76. |
By dissolving 0.35 mole of sodium chloride in water, 1.30L of salt solution is obtained. The molarity of the resulting solution should be reported as-A. `0.3`B. `0.269`C. `0.27`D. `0.2692` |
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Answer» Correct Answer - B Molarity `=("Moles of sulute")/("Vol.of Solution")=(0.35)/(1.3)=0.269` |
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| 77. |
Among the quantities, density (ρ), temperature (T), enthalpy (H), heat capacity (Cp), volume (V) and pressure (P), a set of intensive variables are – (A) (ρ, T, H) (B) (H, T, V) (C) (V, T, Cp) (D) (ρ, T, P) |
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Answer» The Correct option is (D) (ρ, T, P) |
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| 78. |
Among the quantities, density (p), temperature (T), heat capacity `(C_(p))`, volume (V) and pressure (P), a set of intensive variables are-A. (p, T, H)B. (H, T, V)C. (V,T,C_(p))D. (p, T, P |
| Answer» Correct Answer - D | |
| 79. |
Among the following substituted pyridines, the most basic compound is-A. B. C. D. |
| Answer» Correct Answer - C | |
| 80. |
Acetylsalicylic acid is a pain killer and is commonly known as-A. ParacetamolB. ibuprofenC. aspirinD. penicillin |
| Answer» Correct Answer - B | |
| 81. |
Acetylsalicylic acid is a pain killer and is commonly known as – (A) paracetamol (B) ibuprofen (C) aspirin (D) penicillin |
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Answer» The Correct option is (B) ibuprofen |
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| 82. |
A reaction with reaction quotient QC and equilibrium constant KC, will proceed in the direction of the products when – (A) QC = KC (B) QC < KC (C) QC > KC (D) QC = 0 |
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Answer» Correct option (B) QC < KC Explanation: Reaction move in forward direction |
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| 83. |
A whistle emitting a loud sound of frequency 540 Hz is whirled in a horizontal circle of radius 2 m and at a constant angular speed of `15 rad//s`. The speed of sound is `330 m//s`. The ratio of the highest to the lowest frequency heard by a listener standing at rest at a large distance from the center of the circle isA. `1.0`B. `1.1`C. `1.2`D. `1.4` |
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Answer» Correct Answer - C |
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| 84. |
A uniform metal plate shaped like a triangle ABC has a mass of 540 gm. the length of the sides AB, BC and CA are 3 cm, 5 cm and 4 cm, respectively. The plate is pivoted freely about the point A . What mass must be added to a vertex , so that the plate can hang with the long edge horizontal ?A. 140 gm at CB. 540 gm at CC. 140 gm at BD. 540 gm at B |
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Answer» Correct Answer - A |
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| 85. |
A 20gm bullet whose specific heat is 5000 J / (`kg-.^(@)C`) and moving at 2000 m/s plunges into a `1.0` kg block of wax whose specific heat is 3000 J /(`kg-.^(@)C`). Both bullet and wax are at `25^(@)C` and assume that (i) the bullet comes to rest in the wax and (ii) all its kinetic energy goes into heating the wax. Thermal temperature of the wax in `.^(@)C` is close toA. `28.1`B. `31.5`C. `37.9`D. `42.1` |
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Answer» Correct Answer - C |
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| 86. |
Six objects are placed at the vertices of a regular hexagon. The geometric center of the hexagon is at the origin with objects 1 and 4 on the x-axis (see figure). The mass of the kth object is mk = k M |cosqk | where i is an integer, M is a constant with dimension of mass, and qk is the angular position of the kth verted measured from the positive x-axis in the counter-clockwise sense. If the net gravitational force on a body at the centroid vanishes, the value of i is(A) 0 (B) 1 (C) 2 (D) 3 |
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Answer» Correct Option :- (A) 0 Explanation :- For Gravitational equilibrium (FNet) ⇒0 All Diagonal opposite should have equal mass 2i° M cos 60°⇒ 4i° M cos(60° + 180°) Thus i = 0 |
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| 87. |
Six objects are placed at the vertices of a regular hexagon. The geometric center of the hexagon is at the origin with objects 1 and 4 on the x-axis (see figure). The mass of the `k^(th)` object is `mk = "k M "|cosq_(k)|` where i is an integer, M is a constant with dimension of mass, and `q_(k)` is the angular position of the kth verted measured from the positive x-axis in the counter-clockwise sense. If the net gravitational force on a body at the centroid vanishes, the value of i is |
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Answer» Correct Answer - A |
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| 88. |
The following graphs with the solid and dotted lines correspond to the reactions without and with enzyme, respectively. Which of the following graph(s) correctly represent the concept of activation energy ?(A) (i) only (B) (iii) and (iv) (C) (ii) only (D) (i) and (ii) |
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Answer» Correct option (D) (i) and (ii) Explanation: The activation enerfy of a chemical reaction is closely related to its rate. Specifically, the higher the activation energy, the slower the chemical reaction will be. This is because molecules can only complete the reaction once they have reached the top of the activation energy barrier. Each and every enzyme has active side at which substrate can bind, forming enzymes substrate complex to form product. |
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| 89. |
As shown in the figure below, a cube is formed with ten identical resistance R (thick lines) and two shorteing wires (dotted lines) along the arms AC and BD Resistance between point A and B is–A. `R//2`B. `5R//6`C. `3R//4`D. R |
| Answer» Correct Answer - A | |
| 90. |
The graph that depicts Einstein photoelectric effect for a monochromatic source of frequency above that theshold frequency isA. B. C. D. |
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Answer» Correct Answer - c On inceasing intensity of radiation , values of photo electric current inceses because no. of photon incident increases |
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| 91. |
Which ONE of the following statements is TRUE about viruses ? (A)All viruses possess a protein coat around its genetic material at all stages of their life cycle (B) All viruses contain RNA as genetic material (C) All viruses contain DNA as genetic material (D) All viruses replicate only within the host cell |
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Answer» Correct option (D) All viruses replicate only within the host cell Explanation: Virus is non-autonomous outside a living host body, as the polymerase genes expressed early in the cycle of virus but capsid & tail proteins are expressed later. Virus either have DNA or RNA.
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| 92. |
An angiosperm was identified with its endosperm of 6n. Assuming that this is a self-pollinating species, which ONE of the following is the correct ploidy of the parent ? (A) 3n (B) 4n (C) 6n (D) 8n |
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Answer» Correct option (B) 4n Explanation: Endosperm generally – 3n But it is given 6n – so, n = 2n the polidy of mature plant is 2 × 2n = 4n. |
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| 93. |
An angiosperm was identified with its endosperm of 6n. Assuming that is a self-pollinating species, which ONE of the following is the correct ploidy of the parent ?A. 3nB. 4nC. 6nD. 8n |
| Answer» Correct Answer - B | |
| 94. |
The number of isomers which are ethers and having the molecular formula `C_(4)H_(10)O,` is :A. 2B. 3C. 4D. 5 |
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Answer» Correct Answer - B `C_(4)H_(10)O` 3 Ether isomers `CH_(3)-CH_(2)-CH_(2)-O-CH_(3)` `CH_(3)-underset(CH_(3))underset(|)CH-O-CH_(3)` `CH_(3)-CH_(2)-O-CH_(2)-CH_(3)` |
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| 95. |
Which of the following transformations can be carried out by using HI as a rducing agent, under acidic conditions ? `["Given: " I_(2)(S)rarr2I^(-)E^(theta)=0.54" V"]` (i) `Cu^(+)rarrCu(S)" "E^(theta)=0.52" V"` (ii) `Cr^(3+)rarrCr^(2+)" "E^(theta)=-0.41" V"` (iii) `Fe^(3+)rarrFe^(2+)" "E^(theta)=-0.77" V"` (iv) `Fe^(2+)rarrFe(s)" "E^(theta)=-0.44" V"`A. (i) and (iii)B. (ii) and (iv)C. only (iii)D. only (ii) |
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Answer» Correct Answer - C `Fe^(+3)rarrFe^(+2)` is having maximum SRP value. |
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| 96. |
Which of the following transformations can be carried out by using HI as a rducing agent, under acidic conditions ? [Given : I2 (s) → 2I– Eθ = 0.54 V] (i) Cu+ → Cu(s) Eθ = 0.52 V (ii) Cr3+ → Cr2+ Eθ = – 0.41 V (iii) Fe3+ → Fe2+ Eθ = 0.77 V (iv) Fe2+ → Fe(s) Eθ = – 0.44 V (A) (i) and (iii) (B) (ii) and (iv) (C) only (iii) (D) only (ii) |
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Answer» Correct Option :- (C) only (iii) Explanation :- Fe+3 → Fe+2 is having maximum SRP value. |
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| 97. |
The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of (A) Cu (B) Cu2O (C) CuO (D) (RCOO)2Cu |
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Answer» Correct Option :- (B) Cu2O |
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| 98. |
In a Young's double slit experiment the intensity of light at each slit is I0. Interference pattern in observed along a direction parallel to the line S1 S2, on screen S.– The minimum, maximum, and the intensity averaged over the entire screen are respectively (A) 0, 4I0, 2I0 (B) 0, 4I0, I0 (C) I0, 2I0, 3I0/2 (D) 0, 20, I0 |
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Answer» Correct :- (A) 0, 4I0, 2I0 Explanation :- Imin = 0 Imax = 4I0 Iav = 2I0 |
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| 99. |
White light is split into a spectrum by a prism and it is seen on a screen. If we put another indentical inverted prism behind it in contact, what will be seen on the screen ?A. Violet will appear where red wasB. The spectrum will remain the sameC. There will be no spectrum, but only the original light with no deviationD. There will be no spectrum, but the original light will be larcrally displaced |
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Answer» Correct Answer - C |
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| 100. |
The number of solutions (x, y, z) to the system of equations `x+2y+4z=9,4yz+2xy=13,xyz=3` Such that at least two of x, y, z are integers is -A. 3B. 5C. 6D. 4 |
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Answer» Correct Answer - B `x+2y+4z=9`, `2xy+8yz+4xz=26` , `(x)(2y)(4z)=24` Say roots of `P^(3)-9P^(2)+26P-24=0` are x, 2y and 4z Here `(P-2)(P^(2)-7+12)=0` `(P-2)(P-3)(P-4)=0` now `4z=4,2y=2,x=3" then "(3,1,1)` `x=2,2y=4,4z=3" then "(2,2,(3)/(4))` `x=3,2y=4,4z=2" then "(3,2,(1)/(2))` `x=2,2y=3,4z=4" then "(2,(1)/(2),1)` `x=4,2y=2,4z=3" then"(4,1,(3)/(4))` Hence there are five solutions. |
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