InterviewSolution
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InterviewSolution
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. |
The ratio of energy required to raise a satellite to a height `h` above the earth surface to that required to put it into the orbit isA. `R:h`B. `h:R`C. `R:2h`D. `2h:R` |
| Answer» Correct Answer - D | |
| 52. |
The disc of a siren revolves 600 times in one minute and it is in unison with a tuning fork of frequency 480 Hz. The number of holes in the disc isA. 24B. 38C. 48D. 56 |
| Answer» Correct Answer - C | |
| 53. |
Which of the following is dimensionless?A. Force/accelerationB. Velocity/accelerationC. Volume/areaD. Energy/work |
| Answer» Correct Answer - D | |
| 54. |
The character that proves that frogs have evolved from fishes isA. their ability to swim in waterB. tadpole larva in frogsC. similarity in the shape of the leadD. their feeding on aquatic plants |
| Answer» Correct Answer - B | |
| 55. |
Primary succession on land occurs asA. lichen `rarr` mosses `rarr` annual grass `rarr` shrubs `rarr` treesB. mosses `rarr` lichen `rarr` annual grass `rar` shrubs `rarr` treesC. plankton `rarr` submerged `rarr` floating stage `rarr` marsh stage `rarr` climax stageD. all of these |
| Answer» Correct Answer - A | |
| 56. |
How many different kinds of gametes will be produced by a plant having the genotype AABbCC ?A. TwoB. ThreeC. FourD. Nine |
| Answer» Correct Answer - A | |
| 57. |
Four particles of masses m, 2m, 3m and 4m are arranged at the corners of a parallelogram with each side equal to a and one of the angle between two adjacent sides is `60^(@)`. The parallelogram lies in the x-y plane with mass m at the origin and 4 m on the x-axis. The centre of mass of the arrangement will be located atA. `(sqrt3/2a, 0.95a)`B. `(0.95a, sqrt3/4a)`C. `((3a)/4,a/2)`D. `(a/2,(3a)/4)` |
| Answer» Correct Answer - B | |
| 58. |
The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will beA. `PV=(5/32)RT`B. PV=5RTC. `PV=(5/2)RT`D. `PV=(5/16)RT` |
| Answer» Correct Answer - A | |
| 59. |
A stone is thrown horizontally with velocity u. The velocity of the stone 0.5 s later is 3u/2. The value of u isA. `2.2 m s^(-1)`B. `3.3 m s^(-1)`C. `4.4 m s^(-1)`D. `1.1 m s^(-1)` |
| Answer» Correct Answer - C | |
| 60. |
Fifty-six tuning forks are arranged in order of increasing frequencies so that each fork gives 4 beats per second with the next one. The last fork gives the octave of the first. Find the frequency of the first.A. 138 HzB. 144 HzC. 132 HzD. 276 Hz |
| Answer» Correct Answer - B | |
| 61. |
When domestic sewage mixes with river waterA. small animals like rats will die after drinking river waterB. the increased microbial activity releases micronutrients such as ironC. the increased microbial activity uses up dissolved oxygenD. the river water is still suitable for drinking as impurities are only about 0.1 % |
| Answer» Correct Answer - C | |
| 62. |
A vessel contains a mixtrue consisting of `m_(1) = 7g` of nitrogen `M_(1) = 28 and m_(2) = 11 g` of carbon dioxide `(M_(2) 44)` at temperature` T = 300 K` and pressure `p_(0) = 1` atm. Find the density of the mixture.A. 1.446 g per litreB. 2.567 g per litreC. 3.752 g per litreD. 4.572 g per litre |
| Answer» Correct Answer - A | |
| 63. |
A long glass tube is held vertically in water . A tuning fork is struck and held over the tube . Strong resonances are observed at two successive lengths `0.50 m and 0.84 m` above the surface of water . If the velocity of sound is `340 m//s`, then the frequency of the tuning fork isA. 128 HzB. 256 HzC. 384 HzD. 500 Hz |
| Answer» Correct Answer - D | |
| 64. |
The biomass available for consumption to heterotrophs and the rate formation of new organic matter by consumers are defined asA. gross primary productivity and net primary productivity respectivelyB. net primary productivity and gross primary productivity respectivelyC. gross primary productivity and secondary productivity respectivelyD. net primary productivity and secondary productivity respectively. |
| Answer» Correct Answer - D | |
| 65. |
A ball of mass M is thrown vertically upwards. Another ball of mass 2M is thrown at an angle `theta` with the vertical. Both of them stay in air for the same period of time. The heights attained by the two are in the ratioA. `1:2`B. `2:1`C. `1:1`D. `1: cos theta` |
| Answer» Correct Answer - C | |
| 66. |
A man throws balls with the same speed vertically upwards one after the other at an interval of 2s. What should be the speed of the throw so that more than two balls are in the sky at any time ? (Given `g = 9.8 m//s^(2)`)A. Only with speed `19.6 m s^(-1)`B. More than `19.6 m s^(-1)`C. At least `9.8 m s^(-1)`D. Any speed less than `19.6 m s^(-1)` |
| Answer» Correct Answer - B | |
| 67. |
A block released from rest from the top of a smooth inclined plane of angle `theta_1` reaches the bottom in time `t_1`. The same block released from rest from the top of another smooth inclined plane of angle `theta_2` reaches the bottom in time `t_2` If the two inclined planes have the same height, the relation between `t_1 and t_2` isA. `t_2/t_1=((sin theta_1)/(sin theta_2))^(1//2)`B. `t_2/t_1=1`C. `t_2/t_1=(sin theta_1)/(sin theta_2)`D. `t_2/t_1 =(sin^2 theta_1)/(sin^2 theta_2)` |
| Answer» Correct Answer - C | |
| 68. |
A particle is projected from the ground with an initial speed `v` at an angle `theta` with horizontal. The average velocity of the particle between its point of projection and highest point of trajectory is `[EAM 2013]`A. `u cos theta`B. `u/2sqrt(1+cos^2 theta)`C. `u/2sqrt(1+2 cos^2 theta)`D. `u/2sqrt(1+3 cos^2 theta)` |
| Answer» Correct Answer - D | |
| 69. |
A particle is projected vertically upwards and it reaches the maximum height H in time T seconds. The height of the particle at any time t will be-A. `g(t-T)^2`B. `H-1/2 g (t-T)^2`C. `1/2g(t-T)^2`D. `H-g (t-T)^2` |
| Answer» Correct Answer - B | |
| 70. |
A planet is revolving in an elliptical orbit around the sun. Its closest distance from the sun is r and the farthest distance is R. If the velocity of the planet nearest to the sun be v and that farthest away from the sun be V. then v/V isA. `R^2//r^2`B. `r^2//R^2`C. `R//r`D. `r//R` |
| Answer» Correct Answer - C | |
| 71. |
Heroin is extracted fromA. Erythroxylon cocaB. Cannabis sativaC. Papaver somniferumD. Atropa belladona |
| Answer» Correct Answer - C | |
| 72. |
Pollen grains of a plant whose 2n = 8 are cultured to get callus by tissue culture method. What would be the number of chromosomes in the cells of the callus ?A. 14B. 56C. 28D. 21 |
| Answer» Correct Answer - A | |
| 73. |
The egg apparatus of angiosperms comprisesA. an egg cell and two antipodalsB. an egg cell and two synergidsC. an egg cell and two polar nucleiD. an egg cell and the central cell |
| Answer» Correct Answer - B | |
| 74. |
Select the correct statementA. Acetobacter aceti produces citric acidB. Saccharomyces cerevisiae is used as clot busterC. Penicillium notatum restricts the growth of StaphylococciD. Methanogens are found in aerobic conditions |
| Answer» Correct Answer - C | |
| 75. |
Gel electrophoresis is aA. technique of separation of charged molecules under the influence of magnetic fieldB. technique of incorporation of DNA molecules into the cell through transient pore made due to electrical impulsesC. technique of separation and isolation of DNA fragments through the pores of agaroseD. technique of separation and purification of gene products |
| Answer» Correct Answer - C | |
| 76. |
The haploid content of human DNA isA. `3.3 xx 10^(6) bp`B. `3.3 xx 10^(9) bp`C. `4.6 xx 10^(6) bp`D. `6.6 xx 10^(9) bp` |
| Answer» Correct Answer - B | |
| 77. |
Which of the following statements is false regarding predators ?A. Predators keep prey populations under controlB. Predators help in maintaining species divisity in a communityC. If a predator is not efficient, then the prey population would become extinctD. Herbivores have a greater advantage over carnivores since the plants cannot run away to avoid predation |
| Answer» Correct Answer - C | |
| 78. |
If the length of a double helical DNA if 1.7 meters then the number of base pairs present in the DNA isA. `5xx10^(9)`B. `1.7 xx 10^(9)`C. `3.4 xx 10^(9)`D. `1.7 xx 10^(5)` |
| Answer» Correct Answer - A | |
| 79. |
When yellow round heterozygous pea plants are self fertilised, the frequency of occurrence of RrYY genotype among the offspring isA. `9//16`B. `3//16`C. `2//16`D. `1//16` |
| Answer» Correct Answer - C | |
| 80. |
Which one of the following bacteria is used for production of transgenic plants ?A. Escherichia coliB. Bacillus subtillisC. Staphyloccoccus aureusD. Agrobacterium tumefaciens |
| Answer» Correct Answer - D | |
| 81. |
The radii of two planets are respectively `R_(1) and R_(2)` and their densities are respectively `rho_(1) and rho_(2)`.The ratio of the accelerations due to gravity at their surface isA. `(R_1rho_2)/(R_2rho_1)`B. `(R_1rho_1)/(R_2rho_2)`C. `(rho_1R_2^2)/(rho_2R_1^2)`D. `(R_1R_2)/(rho_1rho_2)` |
| Answer» Correct Answer - B | |
| 82. |
Two moles of Helium gas undergo a reversible cyclic process as shown in figure. Assuming gas to be ideal, what is the net work involved in the cyclic process ? A. 200R ln2B. 100R ln2C. 300R ln2D. 400R ln2 |
| Answer» Correct Answer - A | |
| 83. |
An object of mass `0.2 kg` executes SHm along the X-axis with frequency of `(25//pi) Hz`. At the point `X=0.4 m` the object has `KE 0.5 J` and `PE 0.4 J`. The amplitude of oscilation is-A. 0.06 mB. 0.04 mC. 0.05 mD. 0.25 m |
| Answer» Correct Answer - A | |
| 84. |
Some important events in the human female reproductive cycle are given below. Arrange the events in a proper squence. A- Secretion of FSH, B - Growth of corpus luteum, C- Growth of the follicle and oogenesis, D- Ovulation E - Sudden increase in the levels of LH.A. A `rarr` D `rarr` C `rarr` E `rarr` BB. B `rarr` A `rarr` C `rarr` D `rarr` EC. C `rarr` A `rarr` D `rarr` B `rarr` ED. A `rarr` C `rarr` E `rarr` D `rarr` B |
| Answer» Correct Answer - D | |
| 85. |
During transcription, holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle like structure at that point. What is that sequence called ?A. AAAT boxB. TATA boxC. GGTT boxD. CAAT box |
| Answer» Correct Answer - B | |
| 86. |
The sequence of development of embryo sac isA. archesporium `rarr` megaspore `rarr` megasporangium `rarr` embryo sacB. archesporium `rarr` megaspore `rarr` megaspore mother cell `rarr` embryo sacC. archesporium `rarr` megaspore mother cell `rarr` megaspore `rarr` embryo sacD. megaspore mother cell `rarr` archesporium `rarr` megaspore `rarr` embryo sac |
| Answer» Correct Answer - C | |
| 87. |
In a population with two alleles for a gene locus (P and p), the allele frequency of P is 0.7. What would be the frequency of heterozygotes if the population is in Hardy-Weinberg equilibrium ?A. `0.49`B. `0.42`C. `0.21`D. `0.09` |
| Answer» Correct Answer - B | |
| 88. |
A plant species A has a diploid chromosome number of 12. Another plant species B has a diploid chromosome number of 16. the allopolyploid developed by hybridisation of A and B shall a diploid chromosome number asA. 14B. 28C. 40D. 56 |
| Answer» Correct Answer - B | |
| 89. |
A haemophilic man marries a normal homozygous woman. What is he probability that their son will be haemophilic ?A. `75 %`B. `50 %`C. `25 %`D. `0 %` |
| Answer» Correct Answer - D | |
| 90. |
A gene pool consists ofA. the entire genome of a reproducing individualB. the total of all alleles present in a populationC. the frequencies of alleles for a gene locus within the populationD. all the gametes in a population |
| Answer» Correct Answer - B | |
| 91. |
If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it ?A. `30 %`B. `20 %`C. `40 %`D. `60 %` |
| Answer» Correct Answer - A | |
| 92. |
A floor-mat of mass M made up of extensible material, is rolled along its length so as to form a cylinder of radius R and kept on a rough horizontal surface. If the mat is now unrolled, without sliding, to a radius `(R )/(2)`, the decrease in potential energy isA. `1/2MgR`B. `7/8MgR`C. `5/8MgR`D. `3/4 MgR` |
| Answer» Correct Answer - B | |
| 93. |
Which of the following is an opioid drug ?A. HeroinB. CocaineC. MarijunanaD. Hashish |
| Answer» Correct Answer - A | |
| 94. |
There is some change in length when a `33000 N` tensile force is applied on a steel rod of area of cross-section `10^(-3)m^(2)`. The change in temperature of the steel rod when heated is `(Y = 3 xx 10^(11)N // m^(2) , alpha = 1.1 xx 10^(-5 //@)C)`A. `20^@C`B. `15^@C`C. `10^@C`D. `0^@C` |
| Answer» Correct Answer - C | |
| 95. |
Hotspots are priority areas for in situ conservation. The key criteria for determining a hotspot is/areA. location in developed/undeveloped countryB. vicinity to the seaC. to habitat number of endemic species and degree of threatD. all of these |
| Answer» Correct Answer - C | |