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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.
| 151. |
At `23^(@)C`, a pipe open at both ends resonates at a frequency of 450 hertz. At what frequency does the same pipe resonate on a hot day when the speed of sound is 4 percent higher than it would be at `23^(@)C` ?A. 446 HzB. 454 HzC. 468 HzD. 459 Hz |
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Answer» Correct Answer - C |
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| 152. |
Within the exponential phase of growth , if the initial surface area and the growth rate of a leaf are `10 mm^(2)` and `0.015 mm^(2)`/hour respectively , the area of the leaf after 4 days would range from :A. 10 to 12 `mm^(2)`B. 20 to 24 `mm^(2)`C. 30 to 36 `mm^(2)`D. 40 to 48 `mm^(2)` |
| Answer» Correct Answer - D | |
| 153. |
In which compartment of a cell does the process of glycolysis takes place ?A. golgi complexB. cytoplasmC. mitochondriaD. ribosomes |
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Answer» Correct Answer - B Glycolysis (EMP Pathway) is the common step both in aerobic and anaerobic respiration. |
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| 154. |
In which compartment of a cell does the process of glycolysis takes place? (A) golgi complex (B) cytoplasm (C) mitochondria (D) ribosomes |
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Answer» Correct option (B) cytoplasm Explanation: Glycolysis (EMP Pathway) is the common step both in aerobic and anaerobic respiration. |
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| 155. |
In which of the following cellular compartment(s) do respiratory reactions occur ?A. Cytoplasm and endolasmic reticulumB. Mitochondria and Golgi complexC. Mitochondria and cytoplasmD. Mitochondria only |
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Answer» Correct Answer - C Respiratory Reactions Glycolysis`to` Cytoplasm Kreb cycle and ETS `to` Mitochondria |
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| 156. |
A cubical vessel has opaque walls. An observer (dark circle in figure below) is located such that she can see only the wall CD but not the bottom. Nearly to what height should water be poured so that she can see an object placed at the bottom at a distance of 10 cm from the corner C ? Refractive index of water is `1.33`. A. 10 cmB. 16 cmC. 27 cmD. 45 cm |
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Answer» Correct Answer - C |
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| 157. |
Water falls down a `500.0` m shaft to reach a turbine which generates electricity. How much water must fall per second in order to generate `1.00 xx10^(9)` Watts of power? (Assume `50%` efficiency of conversion and `g=10m//s^(2)`)A. `250m^(3)`B. `400m^(3)`C. `500m^(3)`D. `200m^(3)` |
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Answer» Correct Answer - B |
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| 158. |
A nuclear fuel rod generates energy at a rate of `5 xx10^(8) "Watt"//m^(3)`. It is in the shape of a cylinder of radius `4.0` mm and length `0.20` m . A coolant of specific heat `4xx10^(3) J//(kg-K)` flows past it at a rate of `0.2` kg/s. The temperature rise in this coolant is approximately -A. `2^(@)` CB. `6^(@)` CC. `12^(@)` CD. `30^(@)` C |
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Answer» Correct Answer - B |
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| 159. |
A hearing test is conducted on an aged person. It is found that her threshold of hearing is 20 decibels at 1 kHz and it rises linearly with frequency to 60 decibels at 9 kHz. The minimum intensity of sound that the person can hear at 5 kHz is-A. 10 times than that at 1 kHzB. 100 times than that at 1 kHzC. `0.5` times than that at 9 kHzD. `0.05` times than that at 9 kHz |
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Answer» Correct Answer - B |
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| 160. |
In the xy plane three distinct lines `l_1,l_2,l_3` are concurrent at `M(lambda,0)`. Also the lines `l_1,l_2,l_3` are normals to the parabola `y^2 =6x` at the points `A(x_1,y_1), B(x_2,y_2) ,C(x_3,y_3)` respectively. ThenA. `lambda lt -5`B. `lambda gt 3`C. `-5 lt lambda lt -3`D. `0 lt lambda lt 3` |
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Answer» Correct Answer - B Any normal `y=mx-2am-am^(3)` Here `a=3//2` through `(lambda, 0)` `0= m lambda-2 am-am^(3)` `m=0, lambda=2a+am^(2)` `m^(2)=lambda/a-2 gt 0` `lambda gt 2a rArr lambda gt 3` |
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| 161. |
A small box resting on one edge of the table is struck in such a way that it slides off the other edge, 1 m away, after 2 seconds. The coefficient of kinetic friction between the box and the table -A. must be less than `0.05`B. must be exactly zeroC. must be more than `0.05`D. must be exactly `0.05` |
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Answer» Correct Answer - A |
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| 162. |
One end of a rod of length L is fixed to a point on the circumference of a wheel of radius R. The other end is sliding freely along a straight channel passing through the centre O of the wheel as shown in the figure below. The wheel is rotating with a constant angular velocity `omega` about O. Taking `T = (2pi)/(omega)` the motion of the rod is A. simple harmonic with a period of TB. simple harmonic with a period of T/2C. not simple harmonic but periodic with a period of TD. not simple harmonic but periodic with a period of T/2 |
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Answer» Correct Answer - C |
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| 163. |
A rope of mass 5 kg is hanging between two supports as shown. The tension at the lowest point of the rope is close to (take g = `10 m//s^(2)`) A. 22 NB. 44 NC. 28 ND. 14 N |
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Answer» Correct Answer - D |
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| 164. |
A container with rigid walls is covered with perfectly insulating material. The container is divided into two parts by a partition. One part contains a gas while the other is fully evacuated (vacuum). The partition is suddenly removed. The gas rushes to fill the entire volume and comes to equilibrium after a little time. If the gas is not ideal,A. the initial internal energy of the gas equals its final internal energyB. the initial temperature of the gas equals its final temperatureC. the initial pressure of the gas equals its final pressureD. the initial entropy of the gas equals its final entropy |
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Answer» Correct Answer - A |
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| 165. |
Two bulbs of identical volumes connected by a small capillary are initially filled with an ideal gas at temperature T. Bulb 2 is heated to maintain a temperature 2T while bulb 1 remains at temperature T. Assume throughout that the heat conduction by the capillary is negligible. Then the ratio of final mass of the gas in bulb 2 to the initial mass of the gas in the same bulb is close toA. `1//2`B. `2//1`C. `1//3`D. 1 |
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Answer» Correct Answer - B |
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| 166. |
A soldier with a machine gun, falling from an airplane gets detached from his parachute. He is able to resist the downward acceleration if the shoots 40 bullets a second at the speed of 500 m/s. If the weight of a bullet is 49 gm, what is the weight of the man with the gun ? Ignore resistance due to air and assume the acceleration due to gravity g = 9.8 ms–2 - (A) 50 kg (B) 75 kg (C) 100 kg (D) 125 kg |
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Answer» Correct Option :- (C) 100 kg Explanation :- To nullify the downward acceleration (Mm + Mg) 9.8 = 40 × 500 × 49 × 10–3 ⇒ (Mm + Mg) = 100 kg |
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| 167. |
Consider a locus with two alleles, A and a. If the frequency of AA is 0.25, what is the frequency of A under Hardy-Weinberg equilibrium ? (A) 1 (B) 0.25 (C) 0.5 (D) 0 |
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Answer» Correct Option :- (C) 0.5 |
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| 168. |
Some animals excrete uric acid in urine (uricotelic) as it requires very little water. This is an adaptation to conserve water loss. Which animals among the following are most likely to be uricotelic?A. fishesB. amphibiansC. birdsD. mammals |
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Answer» Correct Answer - C Uricotelic organism excrete uric acid or its salts as a result of deamination. Uricotelic organisms included terrestrial arthropods, Lizards, Snakes and Birds. |
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| 169. |
DNA mutations that do not cause any functional change in the protein product are known as – (A) nonsense mutations (B) missense mutations (C) deletion mutations (D) silent mutations |
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Answer» Correct :- (D) silent mutations Explanation :- Silent mutations also called same - sense mutations are not lethal because in these mutations, the amino acid do not get changed. |
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| 170. |
Plant roots are usually devoid of chlorophyll and cannot perform photosynthesis. However, there are exceptions. Which of the following plant root can perform photosynthesis ?A. ArabidopsisB. TinosporaC. RiceD. Hibisucs |
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Answer» Correct Answer - B Tinospora and Trapa are plants which have assimilatory of photosynthetic roots. |
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| 171. |
DNA mutations that do not cause any functional change in the protein product are known as -A. nonsense mutationsB. missense mutationsC. deletions mutationsD. silent mutations |
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Answer» Correct Answer - D Silent mutations also called same - sense mutations are not lethal because in these mutations, the amino acid do not get changed. |
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| 172. |
Human chromosomes undergo structural changes during the cell cycle. Chromosomal structure can be best visualized if a chromosome is isolated from a cell at-A. G1 phaseB. S phaseC. G2 phaseD. M phase |
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Answer» Correct Answer - D Chromosome structure is best seen at metaphase which is a sub stage of M-phase of the cell cycle. |
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| 173. |
A hormone molecule binds to a specific protein on the plasma membrane inducing a signal. The protein it binds to is called-A. ligandB. antibodyC. receptorD. histone |
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Answer» Correct Answer - C Hormone receptors for protein hormone are present on the surface of plasma membrane of cell. |
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| 174. |
By which of the following mechanisms is glucose reabsorbed from the glomerular filrate by the kidney tubule?A. osmosisB. diffusionC. active transportD. passive transport |
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Answer» Correct Answer - C Glucose from glomerular filtrate is reabsorbed from proximal convulated tubule via active transport. |
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| 175. |
A hormone molecule binds to a specific protein on the plasma membrane inducing a signal. The protein it binds to is called – (A) ligand (B) antibody (C) receptor (D) histone |
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Answer» Correct :- (C) receptor Explanation :- Hormone receptors for protein hormone are present on the surface of plasma membrane of cell. |
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| 176. |
Which of the following is true for TCA cycle in eukaryotes ?(A) takes place in mitochondrion (B) produces no ATP (C) takes place in golgi complex (D) independent of electron transport chain |
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Answer» Correct :-(A) takes place in mitochondrion Explanation :- TCA (Tricarboxylic acid cycle), also known as Krebs' cycle, takes place in matrix of mitochondrion. |
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| 177. |
By which of the following mechanisms is glucose reabsorbed from the glomerular filtrate by the kidney tubule ? (A) osmosis (B) diffusion (C) active transport (D) passive transpor |
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Answer» Correct :-(C) active transport Explanation :- Glucose from glomerular filtrate is reabsorbed from proximal convulated tubule via active transport. |
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| 178. |
In mammals, the hormones secreted by the pituitary, the master gland, is itself regulated by – (A) hypothalamus (B) median cortex (C) pineal gland (D) cerebrum |
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Answer» Correct :- (A) hypothalamus |
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| 179. |
The roots of some higher plants get associated with a fungle partenr. The roots provide food to the fungus while the fungus supplies water to the roots. The structure so formed is known -A. lichenB. anabaenaC. mycorrhizaD. rhizobium |
| Answer» Correct Answer - C | |
| 180. |
In mammals, the hormones secreted by the pituitary, the master gland, is itself regulated by -A. hypothalamusB. median cortexC. pineal glandD. cerebrum |
| Answer» Correct Answer - A | |
| 181. |
Why hydrogen peroxide is applied on the wound as a disinfectant, there is frothing at the site of injury, which is due to the presence of an enzyme in the skin that used hydrogen peroxide as a substrate to produce-A. HydrogenB. Carbon DioxideC. WaterD. Oxygen |
| Answer» Correct Answer - D | |
| 182. |
Why hydrogen peroxide is applied on the wound as a disinfectant, there is frothing at the site of injury, which is due to the presence of an enzyme in the skin that used hydrogen peroxide as a substrate to produce– (A) Hydrogen (B) Carbon Dioxide (C) Water (D) Oxygen |
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Answer» Correct Option :- (D) Oxygen |
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| 183. |
Persons suffering from hypertension (high blood pressure) are advised a low-salt diet because– (A) More salt is absorbed in the body of a patient with hypertension (B) High salt leads to water retention in the blood that further increases the blood pressure (C) High salt increases nerve conduction and increases blood pressure (D) High salt causes adrenaline release that increases blood pressure |
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Answer» Correct Option :- (B) High salt leads to water retention in the blood that further increases the blood pressure
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| 184. |
Soon after the three germ layers are formed in a developing embryo, the process of organogenesis starts. The human brain is formed from the- (A) ectoderm (B) endoderm (C) mesoderm (D) partly endoderm and partly mesoderm |
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Answer» Correct Option :- (A) ectoderm Explanation :- Organogenesis begins with the process of neurulation. This neurulation begin with the formation of primitive streak in epiblast (Ectoderm) which leads to formation of neural tube (nerve cord) |
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| 185. |
Soon after the three germ layers are formed in a developing embryo, the process of organogenesis starts. The human brain is form the -A. ectodermB. endodermC. mesodermD. partly endoderm and partly mesoderm |
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Answer» Correct Answer - A Organogenesis begins with the process of neurulation. This neurulation begin with the formation of primitive streak in epiblast (Ectoderm) which leads to formation of neutral tube (nerve cord) |
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| 186. |
Which of the following organelles contain circular DNA ?A. Peroxisomes and MitochondriaB. Mitochondria and Golgi complexC. Chloroplsts and L-ysosomesD. Mitochondria and chloroplast |
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Answer» Correct Answer - D Mitochondria and chloroplast have endo-symbiotic origin (prokaryotic type).So, have ds circular DNA as that of prokaryotes |
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| 187. |
The restriction endonuclease EcoR-I recognizes and cleaves DNA sequence as shown below 5' -G A A T T C-3' 3' -C T T A A G-5' What is the probable number of cleavage sites that can occur in a 10 kb long random DNA sequence ?(A) 10 (B) 2 (C) 100 (D) 50 |
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Answer» Correct Option :- (B) 2 Explanation :- Eco RI is an example of six-cutter restriction endonuclease. It usually cleaves once in every 4096 bp. (1/4)6 = 1/4096 Given length of DNA fragment= 10 Kb = 10000 bp Hence, Probable no. of cleaving sites = 10000/4096 = 2.44 |
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| 188. |
Which one of these is the correct path for a reflex action? (A) Receptor-Motor Neuron-Spinal Cord-Sensory Neuron-Effector (B) Effector-Sensory Neuron-Spinal Cord-Motor Neuron-Receptor (C) Receptor-Sensory Neuron-Spinal Cord-Motor Neuron-Effector (D) Sensory Neuron-Receptor-Motor-Neuron-Spinal Cord-Effector |
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Answer» Correct Option :- (C) Receptor-Sensory Neuron-Spinal Cord-Motor Neuron-Effector |
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| 189. |
In cattle, the coat colour red and white are two dominant traits, which express equally F1 to produce roan ( red and white colour in equal proportion). If F1 progeny are selfbred, the resulting progency in F2 will have phenotypic ration (red : roan: white) is – (A) 1: 1:1 (B) 3 : 9 : 3 (C) 1 : 2 : 1 (D) 3 : 9 : 4 |
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Answer» Correct Option :- (C) 1 : 2 : 1 Explanation :- This is an example of Co-dominance. (Result is 1 Red: 2 Roan: 1 white) |
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| 190. |
Insectivorous plants digest insects to get an essential nutrient. Other plants generally get this nutrient from the soil. What is this nutrient ? (A) Oxygen (B) Carbon dioxide (C) Nitrogen (D) Phosphates |
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Answer» Correct Option :- (B) Carbon dioxide Explanation :- Insectivorous plant growing nitrogen deficient soil, so they get N2 by trapping & digesting insect. |
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| 191. |
In cattle, the coat colour red and white are two dominant traits, which express equally `F_(1)` to produce roan (red and white colour in equal proportion). If `F_(1)` progeny are selfbred, the resulting progency in `F_(2)` will have phenotypic ration (red : roan : white) is -A. `1:1:1`B. `3:9:3`C. `1:2:1`D. `3:9:4` |
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Answer» Correct Answer - C This is an example of Co-dominance. (Result is 1 Red : 2 Roan : 1 white). |
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| 192. |
Insectivorous plants that mostly grow on swampy soil use insects as a source of -A. CarbonB. NitrogenC. PhosporousD. Magnesium |
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Answer» Correct Answer - B Insectivorous plants are nitrogen deficient. E.g. Utricularia, Nepenthes, Dionia etc. |
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| 193. |
The interior of a cow-dung piece kept for a few days is quite warm.This is mostly becauseA. Cellulose present in the dung is a good insulatorB. Bacterial metabolism inside the dung releases heatC. Undigested material releases heat due to oxidation by airD. Dung is dark and absorbs a lot of heat |
| Answer» Correct Answer - B | |
| 194. |
The `CO_(2)` in the blood is mostly carried-A. by hemoglobin in RBCsB. in the cytoplasm of WBCsC. in the plasma as bicarbonate ionsD. by plasma proteins |
| Answer» Correct Answer - C | |
| 195. |
Patients who have undergone organ transplants are given anti-rejection medication to -A. minimize infectionB. stimulate B-macrophage cell interactionC. prevent T-lymphocyte proliferationD. adopt the HLA of donor |
| Answer» Correct Answer - C | |
| 196. |
Patients who have undergone organ transplants are given anti-rejection medications to- (A) minimize infection (B) stimulate B-macrophage cell interaction (C) prevent T-lymphocyte proliferation (D) adopt the HLA of donor |
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Answer» Correct Option :- (C) prevent T-lymphocyte proliferation |
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| 197. |
The number of positive integers n in the set {1, 2, 3, .......100} for which the number `(1^(2)+2^(2)+3^(2)+......+n^(2))/(1+2+3+......+n)` is an integer isA. 33B. 34C. 50D. 100 |
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Answer» Correct Answer - D `(a^(n)+b^(n)+c^(n)+....)/(a+b+c+....)` is always an integer is n = odd n=7 odd here |
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| 198. |
The three different face diagonals of a cuboid (rectangular parallelopiped) have lengths 39, 40, 41.The length of the main diagonal of the cuboid which joins a pair of opposite corners :A. 49B. `49sqrt(2)`C. 60D. `60sqrt(2)` |
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Answer» Correct Answer - A `sqrt(a^(2)+b^(2))=39 `...(i) `sqrt(b^(2)+c^(2))=40` ...(ii) `sqrt(c^(2)+a^(2))=41` ....(iii) `sqrt(a^(2)+b^(2)+c^(2))=?` square and add (i), (ii) & (iii) `2(a^(2)+b^(2)+c^(2))=39^(2)+40^(2)+41^(2)=4802` `a^(2)+b^(2)+c^(2)=2401 rArr sqrt(a^(2)+b^(2)+c^(2))=49` |
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| 199. |
An electron and a photon have same wavelength of `10^(-9)` m. If E is the energy of the photon and p is the momentum of the electron, the magnitude of E/p in SI units isA. `1.00xx10^(-9)`B. `1.50xx10^(8)`C. `3.00xx10^(8)`D. `1.20xx10^(7)` |
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Answer» Correct Answer - C |
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| 200. |
For a domestic AC supply of 220 V at 50 cycles per second, the potential difference between the terminals of a two pin electric outlet in a room is given byA. `V(t) = 220sqrt(2) cos (100pit)`B. V(t) = 220 cos (50 t)C. ` V(t) = 220 cos (100 pit)`D. ` V(t) = 220sqrt(2)cos (50 t) ` |
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Answer» Correct Answer - A |
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