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.
| 1. |
The method of choice for determining the molecular weight of a polymer isA. osmotic pressureB. gas densityC. lowering of freezing pointD. direct weighing of a single molecule |
| Answer» Correct Answer - A | |
| 2. |
Consider the following transformations `CH_(3)COOH overset(CaCO_(3))to A overset("Heat")to B underset(NaOH)overset(I_(2))C` The molecular formula of C isA. `CH_(3)-underset(I)underset(|)overset(OH)overset(|)(C)-CH_(3)`B. `ICH_(3)-COCH_(3)`C. `CHI_(3)`D. `CHI_(3)I` |
| Answer» Correct Answer - C | |
| 3. |
Which of the following phloem elements do not have a nucleus but are still functional in transport?A. Pholem parenchymaB. Companion cellsC. Pholem fibresD. Sieve tubes |
| Answer» Correct Answer - D | |
| 4. |
One mole of `N_(2)H_(4)` loses ten moles of electrons to form a new compound `A`. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in `A`? (There is no change in the oxidation state of hydrogen.)A. `-1`B. `-3`C. `+3`D. `+5` |
| Answer» Correct Answer - C | |
| 5. |
A conductor lies along the Z-axis at `-1.5 lt Z lt 1.5m` and carries a fixed current of 10.0 A in `-a_(z)` direction (see figure). For a field `B=3.0xx10^(-4)e^(-0.2x)a_(y)` T, find the powerr required to move the conductor at constant speed to `x=2.0m,y=0` in `5xx10^(-3)`s. assume parallel motionn along the X-axis. A. 1.57WB. 2.97 WC. 14.85 WD. 29.7W |
| Answer» Correct Answer - B | |
| 6. |
A `gamma`-ray photon is passing near a nucleus and breaks into an electron and positron. The region contains a uniform magnetic field B perpendicular to the plane of motion. Find the time after which they again converted into `gamma`-ray. The force of electrostatic interaction and gravitational interaction may be neglectedA. `(2pim)/(eB)`B. `(pim)/(2eB)`C. `(4pim)/(eB)`D. none of these |
| Answer» Correct Answer - A | |
| 7. |
A beam of light is travelling from region II to region III (see the figure). The refractive index in region I, II and III are `n_(0),(n_(0))/(sqrt(2)) and (n_(0))/(2)` respectively. The angle of incidence `theta` for which the beam just misses entering region III is A. `30^(@)`B. `45^(@)`C. `60^(@)`D. `sin^(-1)(sqrt(2))` |
| Answer» Correct Answer - A | |
| 8. |
A sphere rolls without slipping on a rough horizontal surface with cente of mass speed `v_(0)`. If mass of the sphere is M and its radius R, then what is the angular momentum of the sphere about the point of contact? A. `(5)/(2)Mv_(0)R`B. `(7)/(5)Mv_(0)R`C. `(3)/(5)Mv_(0)R`D. `(1)/(2)Mv_(0)R` |
| Answer» Correct Answer - B | |
| 9. |
Consider the statements given below regarging contrception and answer as directed thereafter: (1) Medical Termination of Pregnancy (MTP) during first trimester is generally safe (2) Generally chances of contraception are nil until mother breast-feeds the infant upto two years (3) Intrauterine devices like copper-T are effective contraceptives (4) Contraceptive pill may be taken upto one week after coitus to prevent conceptionA. a,cB. a,bC. b,cD. c, d |
| Answer» Correct Answer - A | |
| 10. |
A point charge Q is situated at point B on the ground. A point charge q of mass m is vertically dropped along line AB from a multi-storey building of height h. find the position of the point charge q, when it is in equilibrium. A. `sqrt((qQ)/(4piepsi_(0)mg))`B. `(Q)/(h^(2))`C. `(qh)/(m)`D. none of these |
| Answer» Correct Answer - A | |
| 11. |
Assertion : Interferons are effective against viruses. Reason : Proteins which can be synthesized only by genetic engineering are effective against viruses.A. If both assertion and reason are true and the reason is correct explanation of the assertion.B. If both assertion and reason are true but reason is not correct explanation of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false |
| Answer» Correct Answer - C | |
| 12. |
Which of the following ether is called phenetole?A. `PhOCH_(3)`B. `PhOC_(2)H_(5)`C. `PhOC_(3)H_(7)`D. `p-NO_(2)-C_(6)H_(4)OC_(2)H_(5)` |
| Answer» Correct Answer - B | |
| 13. |
Nucleophilic addition reaction will be most favoured inA. `CH_(3)-CH_(2)-CH_(2)overset(O)overset(||)(C)CH_(3)`B. `(CH_(3))_(2)C=O`C. `CH_(3)CH_(2)CHO`D. `CH_(3)CHO` |
| Answer» Correct Answer - D | |
| 14. |
According to one estimate, how many species on the earth have so far been scientifically described?A. Slightly gt 1.5 millionB. Slightly lt 10 millionC. Slightly gt10 millionD. Slightlylt1.5 million |
| Answer» Correct Answer - A | |
| 15. |
A beaker contains water up to a height `h_(1)` and kerosene of height `h_(2)` above water so that the total height of (water + kerosene) is `(h_(1) + h_(2))` . Refractive index of water is `mu_(1)` and that of kerosene is `mu_(2)` . The apparent shift in the position of the bottom of the beaker when viewed from above is :-A. `(1-(1)/(mu_(1)))h_(2)+(1-(1)/(mu_(2)))h_(1)`B. `(1+(1)/(mu_(1)))h_(1)+(1+(1)/(mu_(2)))h_(2)`C. `(1-(1)/(mu_(1)))h_(1)+(1-(1)/(mu_(2)))h_(2)`D. `(1+(1)/(mu_(1)))h_(2)-(1+(1)/(mu_(2)))h_(1)`. |
| Answer» Correct Answer - C | |
| 16. |
the magnitude of surface tension of liquid dpends on the attractive forces between the molecules. Arrange the following in increasing order of surface tension : Water, alcohol `(C_(2)H_(5)OH)` and hexane `[CH_(3)(CH_(2))_(4)CH_(3)")"]`.A. Water`lt`alcohol`lt`hexaneB. hexane`lt`alcohol`lt`waterC. alcohol`lt`water`lt`hexaneD. hexane`lt`water`lt`alcohol |
| Answer» Correct Answer - B | |
| 17. |
Two bars `A` and `B` of circular cross section, same volume and made of the same material, are subjected to tension. If the diameter of `A` is half that of `B` and if the force applied to both the rod is the same and it is in the elastic limit, the ratio of extension of `A` to that of `B` will beA. 16B. 15C. 8D. 24 |
| Answer» Correct Answer - C | |
| 18. |
`CH_(3)CH_(2)+CHCl_(3)+KOH to` nitrogen containing compound `+KCl+H_(2)O`. Nitrogen containing compound isA. `CH_(3)CN`B. `CH_(3)NHCH_(3)`C. `CH_(3)-N^(-)-=overset(+)(C)`D. `CH_(3)-overset(+)(N)-=overset(-)(C)`. |
| Answer» Correct Answer - D | |
| 19. |
Amphoteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide?A. `Be(OH)_(2)`B. `Mg(OH)_(2)`C. `Ca(OH)_(2)`D. `Ba(OH)_(2)` |
| Answer» Correct Answer - A | |
| 20. |
Amides can be converted into amines by a reactions named after .A. PerkinB. ClaisenC. HofmannD. Kekule |
| Answer» Correct Answer - C | |
| 21. |
Which among the following is not an essential amino acids?A. TyrosineB. LeucineC. LysineD. Valine |
| Answer» Correct Answer - A | |
| 22. |
Which one of the following features is associated with photorespiration in plants?A. Occurs in the mitochondria onlyB. Conserves energy as ATPC. Occurs in the darkD. No ATP synthesis |
| Answer» Correct Answer - D | |
| 23. |
The difference in angular momentum associated with electron in two successive orbits of hydrogen atom is:A. `h/(2pi)`B. `h/pi`C. `(n-1)(h)/(2pi)`D. `(h)/(2)` |
| Answer» Correct Answer - A | |
| 24. |
The angular width of the central maximum of the diffraction patternn in a single slit (of width a) experiment, with `lamda` as the wavelenth of light, isA. `(3lamda)/(2a)`B. `(lamda)/(2a)`C. `(2lamda)/(a)`D. `(lamda)/(a)` |
| Answer» Correct Answer - C | |
| 25. |
Light of wavelenth 6000 Å falls on a single slit of width 0.1 mm. the second minimum will be formed for the angle of diffraction ofA. 0.06 radB. 0.05 radC. 0.12 radD. 0.012 rad |
| Answer» Correct Answer - D | |
| 26. |
"A disease which shows its transmission from unaffected carrier female to some of the male progeny". Find the nature of the trait.A. Autosomal recessiveB. Autosomal dominantC. Sex-linked recessiveD. Sex-linked dominant |
| Answer» Correct Answer - C | |
| 27. |
Which one of the following statement is correct regarding fluid mosaic model of plasma membrane?A. Upper layer is polar and hydrophobicB. Phospholipids form a bimolecular layer in middle partC. Proteins forma middle layerD. Upper layer is non-polar and hydrophile |
| Answer» Correct Answer - A | |
| 28. |
Parthenocarpic fruits are produced byA. Treating plants with phenyl mercuric acetateB. Treating plants with low concentrations of gibberellic acid and auxinC. Removing androecium of flowers before release of pollen grainsD. Raising plants from vernalised seeds |
| Answer» Correct Answer - B | |
| 29. |
A biological catalyst isA. ann amino acidB. a carbohydrateC. a nitrogenn moleculeD. an enzyme |
| Answer» Correct Answer - D | |
| 30. |
The current amplificationn factor for a transistor in its common emitter mode is 50. the current amplication factor in the common base mode of the transistor isA. 0.99B. 0.98C. 1.02D. 10 |
| Answer» Correct Answer - B | |
| 31. |
The half-life of a radioactive substance is 10 days. The time taken for the `((7)/(8))`th of the sample of disintegrates isA. 20 daysB. 30 daysC. 40 daysD. 80 days |
| Answer» Correct Answer - B | |
| 32. |
Ecological niche isA. The surface area of the oceanB. An ecologically adapted zoneC. The physical position and functional role of a species within the communityD. Formed of all plants and animals living at the bottom of a lake |
| Answer» Correct Answer - C | |
| 33. |
Which animal listed below can survive both in marine as well as fresh water?A. PetromyzonB. LabeoC. ExocoetusD. Torpedo |
| Answer» Correct Answer - A | |
| 34. |
Two hybrid orbitals have a bond angle of `120^(@)`. The percentage of s-character in the hybrid orbitals is nealy:A. 0.25B. 0.33C. 0.5D. 0.66 |
| Answer» Correct Answer - B | |
| 35. |
A reaction involiving two different reactants can never be:A. unimolecular reactionB. first order reactionC. second order reactionD. bimolecular reaction |
| Answer» Correct Answer - A | |
| 36. |
An abnormality not due to recessive gene isA. PhenylketonuriaB. AlkaptonuriaC. PolydactylyD. Tay-Sachs syndrome |
| Answer» Correct Answer - C | |
| 37. |
Bundle sheath cellsA. Are rich is PEP carboxylaseB. Lack RubiscoC. Lack both Rubisco and PEP carboxylaseD. Are rich in Rubisco |
| Answer» Correct Answer - D | |
| 38. |
Study the pedigree chart given below :- What does it show :-A. Inheritance of a condition like thalassemiaB. The pedigree chart is wrong as this is not possibleC. Inheritance of a recessive sex-linked disease like haemophiliaD. Inheritance of a sex-linked inborn error of metabornlism like phenylketonuria |
| Answer» Correct Answer - A | |
| 39. |
Select the wrong statement.A. Photosynthesis in Anabaena, Oscillatoria as well as Hibiscus in oxygenic.B. All angiosperms are photoautotrophs.C. Sugarcane and maize are `C_4` plants.D. Calvin cycle is present in both `C_3` and `C_4` plants. |
| Answer» Correct Answer - B | |
| 40. |
Which of the following is not a biodiversity hotspot?A. Indo-BurmaB. HimalayaC. Gangetic plainD. Western Ghats and Sri Lanka |
| Answer» Correct Answer - C | |
| 41. |
If A=B+C and the values of A,B and C are 13,12 and 5 respectively, then the angle between A and C will beA. `cos^(-1)(5//13)`B. `cos^(-1)(13//12)`C. `pi//2`D. `sin^(-1)(5//12)` |
| Answer» Correct Answer - A | |
| 42. |
Calculates the work done `(W_(AB))` by the gas, if 5 moles of an ideal gas is carried by a quasi state isothermal process at 500K to twice its volume. A. 1500 JB. 143857 JC. 13380 JD. 14890 J |
| Answer» Correct Answer - B | |
| 43. |
Ascaris live in the man inA. LiverB. BloodC. Small intestineD. Large intestine |
|
Answer» Correct Answer - C |
|
| 44. |
The excess pressure inside one soap bubble is three times that inside a second bubble. The ratio of the volume of first bubble to that of the secondA. `1:3`B. `1:9`C. `1:27`D. `3:1` |
| Answer» Correct Answer - C | |
| 45. |
Two simple harmonic motions are represented by the equations `y_(1) = 10 sin (3pit + (pi)/(4))` and `y_(2) = 5 (3 sin 3 pi t+sqrt(3) cos 3 pi t)`. Their amplitudes are in the ratio ofA. `sqrt(3)`B. `(1)/(sqrt(3))`C. `2`D. `1/6` |
| Answer» Correct Answer - B | |
| 46. |
If a body is executing simple harmonic motion, thenA. at extreme positions, the total energy is zeroB. at equilibrium position, the total energy is in the form of potential energyC. at equilibrium position, the total energy is in the form of kinetic energyD. at extreme position, the total energy is infinite |
| Answer» Correct Answer - C | |
| 47. |
A metal rod `(Y+2xx10^(12)"dyne"(cm)^(-2))` of coefficient of linear expansion `1.6xx10^(-5)` per `.^(=)C` has its temperature raised by `20^(@)C`. The linear compressive stress to prevent the expansion of the rod isA. `2.4xx10^(8)"dyne"//(cm)^(-2)`B. `3.2xx10^(8)"dyne"//(cm)^(-2)`C. `6.4xx10^(8)"dyne"(cm)^(-2)`D. `4.6xx10^(8)"dyne"//(cm)^(-2)` |
| Answer» Correct Answer - C | |
| 48. |
The magnetic flux `phi` (in weber ) in a closed circuit of resistance 10`Omega` varies with time t (in secnod) according to equation `phi=6t^(2)-5t+1`. The magnitude of induced current at `t=0.25` s isA. 1.2B. 0.8 AC. 0.6 AD. 0.2 A |
| Answer» Correct Answer - D | |
| 49. |
The escape velocity on the surface of the earth is 11.2 `kms^(-1)`. If mass and radius of a planet is 4 and 2 tims respectively than that of the earth, what is the escape velocity from the planet?A. 11.2`kms^(-1)`B. `1.112kms^(-1)`C. `15.8kms^(-1)`D. `22.4kms^(-1)` |
| Answer» Correct Answer - C | |
| 50. |
Molar heat capacity of water in equilibrium with the ice at constant pressure is `:`A. zeroB. infinity `(oo)`C. 40.45 kJ `K^(-1)mol^(-1)`D. 75.48 `JK^(-1)mol^(-1)`. |
| Answer» Correct Answer - B | |