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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. |
Read the following extract and answer the questions given below : The sheoga, the oudumber, the neem were all cut down But the huge banyan tree stood like a problem Whose roots lay deeper than all our lives. My father ordered it to be removed. The banyan tree was three times as tall as our house Its trunk had a circumference of fifty feet Its scraggly aerial roots fell to the ground From thirty feet or more so first they cut the branches Pick out the expressions from the poem giving it a pictorial quality, |
| Answer» Huge banyan tree stood, three times as tall as our house, its trunk had a circumference of fifty feet, and its scraggly aerial roots fell to the ground. | |
| 2. |
Read the following extract and answer the questions given below : The sheoga, the oudumber, the neem were all cut down But the huge banyan tree stood like a problem Whose roots lay deeper than all our lives. My father ordered it to be removed. The banyan tree was three times as tall as our house Its trunk had a circumference of fifty feet Its scraggly aerial roots fell to the ground From thirty feet or more so first they cut the branches Why was the banyan tree a problem ? |
| Answer» The banyan tree was a problem because its roots went very deep into the soil as it was very old. | |
| 3. |
Read the following extract and answer the questions given below : The sheoga, the oudumber, the neem were all cut down But the huge banyan tree stood like a problem Whose roots lay deeper than all our lives. My father ordered it to be removed. The banyan tree was three times as tall as our house Its trunk had a circumference of fifty feet Its scraggly aerial roots fell to the ground From thirty feet or more so first they cut the branches What do you do to save the natural habitat of wild life ? |
| Answer» To save the natural habitat of wild life, we need to plant more and more trees and forests and try to grow them well. Besides, we have to stop deforestation altogether and instead, go for afforestation | |
| 4. |
Prove that three vectors `vec(a),vec(b)andvec(c)` are coplanar if and only if there exists non-zero linear combination `xvec(a)+yvec(b)+zvec(c)=vec(0)`. |
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Answer» Let `vec(a),vec(b)andvec(c)` be coplanar. Case I : Let `vec(a) andvec(b)` are collinear. Then there exists scalars x, y at least one of them is non-zero such that `xvec(a)+yvec(b)=0`. `:.xvec(a)+yvec(b)+zvec(c)=0` is a linear combination where z=0 Case II : Suppose none of the vectors `vec(a),vec(b)andvec(c)` are collinear. AS `vec(c` is coplanar with `vec(a)andvec(b)`, there exists scalars x, y such that `vec(c)=xvec(a)+yvec(b)` `:.xvec(a)+yvec(b)+zvec(c)=0` is the required non-zero linear combination, where z=-1. Conversely, suppose `xvec(a)+yvec(b)+zvec(c)=0`, where one of x, y, z is non-zero say `zne0`. `:.vec(c)=(x)/(z)vec(a)+(y)/(z)vec(b)` `:.vec(c)` is coplanar with `vec(a)andvec(b)` `:.vec(a),vec(b)andvec(c)` are coplanar vectors. |
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| 5. |
The change in the wavelength of light when it travels from air to glass of refractive index 1.5 and the frequency of light `4 xx 10^(14) Hz` is |
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Answer» Given : `mu_(g) = 1.5` `v = 4 xx 10^(14) Hz` `c = 3 xx 10^(8) m//s` `lambda_(g) = ?` As we know `c = v lambda_(a)` `:. lambda_(a) = c/v` `= (3 xx 10^(8))/(4 xx 10^(4)) = 7500 Å` `lambda_(g) = (c)/(v_(g)) = (vlambda_(a))/(vlambda_(g))` `lambda_(g) = (lambda_(a))/(mu_(g))` `= (7500)/(1.5)` `= 5000 Å` `:. lambda_(a) -lambda_(g) = 7500-5000` `= 2500 Å` Wave number in glass `barlambda_(g) = 1/(lambda_(g))` `barlambda_(g) = (1)/(5 xx 10^(-7))` ` :. lambda_(g) = 2 xx 10^(6)` per m |
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| 6. |
The energy of an excited hydrogen atom is `-0.85 eV`. Find the angular momentum of the electron. `(h = 6.63 xx 10^(-34) J.s., pi = 3.142, E_(1) = -13.6 eV)` |
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Answer» Given : `E_(n) = -0.85 eV, E_(1) = - 13.6 eV`. `h = 6.63 xx 10^(-34) J.s.` As we know , `E_(n) = (-13.6)/(0.85)` `n^(2) = 16` `n = 4` Angular momentum `= (nh)/(2pi)` `= (4 xx 6.63 xx 10^(-34))/(2 xx 3.142)` Angular momentum `= 4.22 xx 10^(-34)` joule-sec. |
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| 7. |
A closely wound solenoid of 1000 turns and area of cross-section `2 xx 10^(-4) m^(2)` carries a current of 1A. It is placed in a horizontal plane with its axis making an angle of `30^(@)` with the direction of uniform magnetic field of `0.16 T`. Calculate the torque acting on the solenoid. |
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Answer» Given : `A = 2 xx 10^(-4) m^(2),I = 1A, theta = 30^(@)` `B = 0.16 T, n = 1000` As we know, `M = nIA` `= 1000 xx 1 xx 2 xx 10^(-4)` `M = 0.2 Am^(2)` Now, `tau = MB sin theta` `= 0.2 xx 0.16 xx sin 30^(@)` `= 0.2 xx 0.16 xx 1/2` `tau = 0.016 Nm`. |
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| 8. |
In a potentiometer the balancing length of the wire is found to be `2.5 m` for a cell of e.m.f. `1.5V`. Find the balancing length of the wire fore another cell of e.m.f. `1.2 V` on the same potentiometer. |
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Answer» Given : `E_(1) = 1.5 V, E_(2) = 1.2 V, l_(1) = 2.5 m` As we know , `(E_(1))/(E_(2)) = (l_(1))/(l_(2))` `l_(2) = (E_(2))/(E_(1)) xx l_(1)` ` = (1.2 xx 2.5)/(1.5)` `= 0.4 xx 5` `l_(2) = 2 m` |
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| 9. |
In a photocell, increasing the intensity of incident light increases `"……………….."`A. the stopping potentialB. the photoelectric currentC. the energy of the incidient photonsD. maximum kinetic energy of the photo-electron |
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Answer» Correct Answer - b the photoelectric current |
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| 10. |
In series LCR circuit `3 = Omega X_(L) = 8 Omega, X_(C) = 4 Omega`, the impendance of the circuit is:A. `3Omega`B. `7 Omega`C. `5 Omega`D. `25 Omega` |
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Answer» Correct Answer - c `5 Omega` |
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| 11. |
The optical path difference between two identical waves arriving at a point is `371 lambda`. Is the point bright or dark ? If the path difference is `0.24 mm`, calculate the wavelength of light used. |
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Answer» Given : Path difference `= 371 lambda` Path differences is an even multiple of `(lambda)/(2)`. Hence, the point will be bright, Path difference `= 37 lambda = 0.24 xx 10^(-3) m` `:. lambda = (0.24 xx 10^(-3))/(371)` `= 6.469 xx 10^(-7) m` `lambda = 6469Å` |
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| 12. |
A microphone which converts sound into electrical signal is an example of `"…………….."`.A. a thermisterB. a rectifierC. a modulatorD. an electrical transducer |
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Answer» Correct Answer - d an electrical transducer |
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| 13. |
What are elastomers ? Distinguish between thermoplastic polymers and thermosetting polymers. |
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Answer» Elastomers : When polymer is stressed, the polymer chain stretches, but due to cross linking tearing is prevented , when the stain is relieved the chain returns to its original position. Thus, polymers show elasticity and are called elastomers. Thermoplastic polymers : These polymers are called thermoplastic as on heating they becomes soft and on cooling become hard. Hence, these polymers can be remolded and recycled.e.g., polythene, polystyrene, PVC, etc. Thermosetting polymers : These do not become soft on heating under pressure, hence cannot be remoulded and recycled. These are cross linked polymers and cannot be reused.e.g., bakelite. |
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| 14. |
What is the action of lithium aluminium hydride in the presence of ether on the following compounds ? (a) nitroethane (b) 2-methyl-1-nitropropane |
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Answer» (a) `underset("Nitroethane")(CH_(3)-CH_(2)-NO_(2))overset(LiAIH_(4)//"ether")rarr underset("Ethanamine")(CH_(3)-CH_(2)-NH_(2))` (b) `underset("2-Methyl-1-nitropropane")(CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-NO_(2)) overset(LiAIH_(4)//"ether")rarr underset("2-Methylpropanamine")(CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-NH_(2))` |
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| 15. |
Arrange the following oxyacids of chlorine in decreasing order of their thermal stability. Give reason. HOClO, HOCl, `HClO_(4)`, `HOClO_(2)` |
| Answer» `HOCl gt HOClO gt HOClO_(2) gt HClO_(4)` because, thermal stability increases with increase in oxidation state of halogen. | |
| 16. |
माँ बस यह वरदान चाहिए जीवनपथ जो कंटकमय हो, विपदाओं का घोर वलय हो, किंतु कामना एक यही बस, प्रतिपल पग गतिमान चाहिए किसका घोर वलय है |
| Answer» विपदाओं का घोर वलय है | |
| 17. |
माँ बस यह वरदान चाहिए जीवनपथ जो कंटकमय हो, विपदाओं का घोर वलय हो, किंतु कामना एक यही बस, प्रतिपल पग गतिमान चाहिए गतिमान क्या चाहिए |
| Answer» प्रतिपल पग गतिमान चाहिए | |
| 18. |
Give the antonyms of the following words by adding prefixes common |
| Answer» Correct Answer - uncommon | |
| 19. |
Rewrite the following sentences in the ways instructed : I stand here to thank Pandit Jawaharlal Nehru. ( Rewrite the sentence using the gerund form of the underlined word.) |
| Answer» I stand here for thanking Pandit Jawaharlal Nehru. | |
| 20. |
Rewrite the following sentences in the ways instructed They miss trains on a regular basis. ( Rewrite the sentence using the adverb form of the underlined word.) |
| Answer» They miss trains regularly. | |
| 21. |
Rewrite the following sentences in the ways instructed : The special school did Chaitanya a lot of good. ( Rewrite it using the Past Perfect Tense.) |
| Answer» The special school hnd done Chaitanya a lot of good. | |
| 22. |
Rewrite the following sentences in the ways instructed: (iii) He gazed at my cracked boots and frayed cuffs and irusted me. (Make it a Simple sentence.) |
| Answer» Gazing at my cracked boots and frayed cuffs, he trusted me. | |
| 23. |
Select and write the most appropriate answer from the given alternatives for each sub-question : A substance which shows highest entropy is ..........A. `SrCO_(3(s))`B. `Cu_((s))`C. `NaCl_((aq.))`D. `Cl_(2(g))` |
| Answer» Correct Answer - B::C::D | |
| 24. |
Select and write the most appropriate answer from the given alternatives for each sub-question : The process of extracting a soluble material from an insoluble solid by dissolving out in a suitable solvent is known as ...........A. CalcinationB. RoastingC. LeachingD. Smelting |
| Answer» Correct Answer - A::C | |
| 25. |
Select and write the most appropriate answer from the given alternatives for each sub-question : The kinetic order for the following reaction is ......... `2N_(2)O_((g))overset(Pt)rarr 2N_(2(g))+O_(2(g))`A. zeroB. firstC. secondD. third |
| Answer» Correct Answer - A | |
| 26. |
Select and write the most appropriate answer from the given alternative for each sub-question : Substances which break just after their elastic limit is reached are `"………….."`.A. ductileB. brittleC. malleableD. plastic |
| Answer» Correct Answer - B | |
| 27. |
Select and write the most appropriate answer from the given alternative for each sub-question : As we move from the equator towards the pole, wight of a body `"………….."`.A. remains the sameB. becomes zeroC. decreasesD. increases |
| Answer» Correct Answer - D | |
| 28. |
Select and write the most appropriate answer from the given alternatives for each sub-question : Which of the following compounds of chlorine is used as refrigerant ?A. `C Cl_(3)NO_(2)`B. `C Cl_(2)F_(2)`C. `COCl_(2)`D. `C Cl_(4)` |
| Answer» Correct Answer - B::C | |
| 29. |
Select and write the most appropriate answer from the given alternative for each sub-question : A rectangular film of a liquid is 5 cm long and 4 cm wide. If the work done in increasing its ara to `7 cm xx 5 cm` is 0.06 J, the surface tension of the solution is :A. `0.02 J//m^(2)`B. `0.2 J//m^(2)`C. `2 J//m^(2)`D. `20 J//m^(2)` |
| Answer» Correct Answer - D | |
| 30. |
The functional group present in triacylglycerol is :A. alcoholB. etherC. esterD. amine |
| Answer» Correct Answer - C | |
| 31. |
Select and write the most appropriate answer from the given alternatives for each sub-question : 4.0 grams of NaOH (Molar mass = 40.0 gram `"mol"^(-1)` ) is dissolved in 500 `cm^(3)` of water. What is the molarity of NaOH solution ?A. 1 MB. 0.8 MC. 0.5 MD. 0.2 M |
| Answer» Correct Answer - B::D | |
| 32. |
Select and write the most appropriate answer from the given alternatives for each sub-question : Number of types of orthorhombic unit cell is ...........A. 7B. 3C. 4D. 2 |
| Answer» Correct Answer - C::D | |
| 33. |
Select and write the most appropriate answer from the given alternatives for each sub-question : The S.I. unit of cell constant for conductivity cell is .............A. `m^(-1)`B. `S*m^(-2)`C. `cm^(-2)`D. `S*dm^(2)*"mol"^(-1)` |
| Answer» Correct Answer - B | |
| 34. |
Select and write the most appropriate answer from the given alternatives for each sub-question : `C_(2)H_(5)-Br+NaI overset("dry acetone")rarr C_(2)H_(5)-I+ NaBr` The above reaction is :A. Wurtz reactionB. Balz-Schiemann reactionC. Swarts reactionD. Flinkelstein reaction |
| Answer» Correct Answer - A::C::D | |
| 35. |
Pyrolusite ore is :A. MnOB. `MnO_(2)`C. `Mn_(2)O_(7)`D. `Mn_(2)O_(3)` |
| Answer» Correct Answer - B | |
| 36. |
The ligand triethylene tetramine is :A. monodentateB. bidentateC. tridentateD. tetradentate |
| Answer» Correct Answer - A::D | |
| 37. |
Explain the following with the help of balanced chemical equation : (a) Bleaching action of `SO_(2)`. Dehydration of formic acid by concentrated `H_(2)SO_(4)`. Burning of benzene in presence of excess of dioxygen . |
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Answer» (a) `SO_(2)` is used as bleaching agent in the presence of moisture. It bleaches due to reduction and bleaching action is temporary. `SO_(2)+2H_(2)OrarrH_(2)SO_(4)+2[H]` (b) `underset(("Formic acid"))(HCO OH) underset(("Dehydration"))overset(H_(2)SO_(4))rarr CO+H_(2)O` Conc. `H_(2)SO_(4)` is a powerful dehydrating agent. (c) Benzene burns in excess of dioxygen to form carbon dioxide and water. `C_(6)H_(6)+(15)/(2) O_(2) rarr 6CO_(2)+3H_(2)O` |
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| 38. |
What is the action of the following on isopropyl methyl ether ? (a) cold HI (b) hot HI |
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Answer» (a) `underset("Isopropylmethyl ether")(CH_(3)-overset(CH_(3))overset(|)(CH)-O-CH_(3))+HIoverset("cold")rarr underset("Isopropyl alcohol")(CH_(3)-overset(CH_(3))overset(|)(CH)-OH)+underset("Methyl iodide")(CH_(3)I)` (b) `underset("Isopropylmethyl ether")(CH_(3)-overset(CH_(3))overset(|)(CH)-O-CH_(3))+2HI overset("hot")rarr underset("Isopropyl iodide")((CH_(3))_(2)CHI)+CH_(3)I+H_(2)O` |
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| 39. |
Give names of cranial nerve numbers VI and VII |
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Answer» VI Cranial Nerve - Abducens. VII Cranial Nerve - Facial. |
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| 40. |
Define linkage. |
| Answer» As the genes are present on the chromosomes, they have a tendency to inherit together and this tendency is known as linkage. | |
| 41. |
Read the following extract and answer the questions given below : For my middle-class brother . this principle of supreme luxury, what are you and what am I, and we go on deciding the real truth in this world. The truth of that dream we buy on credit or not going to the office on Saturday, at last, and the merciless bosses whom the worker manufacturers in indivisible granaries where executioners were always born and grow up and always multiply How do the bosses behave with the workers ? |
| Answer» The bosses treat the workers mercilessly and kill all their dreams and joys | |
| 42. |
Give one word/or the following from the extract an acceptable reason for doing something |
| Answer» Correct Answer - excuse | |
| 43. |
Grammar (Do as directed) : We have to learn ......... lot from ......... autobio- graphies of great personalities. ( Fill in the blanks with appropriate articles.) |
| Answer» We have to learn a lot from the autobio- graphies of great personalities. | |
| 44. |
Pick out the words from the extract which mean- confusion |
| Answer» Correct Answer - chaos | |
| 45. |
Pick out the words from the extract which mean- extremely important |
| Answer» Correct Answer - critical | |
| 46. |
Read the following extract and answer the questions given below : They whisper like drizzles as they roam the streets with a lost gae as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Why are the old women seen wandering aimlessly |
| Answer» The old women are seen wandering air aimlessly because their children or relatives have aboandoned them | |
| 47. |
Read the following extract and answer the questions given below : All the rest of her children, she said, are on the nuclear blacklist of the dead, all the rest, unless the whole world understands- that peace is a woman. A thousand candles then lit in her starry eyes, and I saw angels bearing a moonlit message |
| Answer» The mother makes an appeal to stop wars and conflicts the world as she does not want her children to diem senseless wars | |
| 48. |
Read the following extract and answer the questions given below : They whisper like drizzles as they roam the streets with a lost gae as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Find out the expressions related to the element of pathos (sorrow). |
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Answer» (i) They roam the streets with a lost gaze. (ii) They shiver like December nights in their dreamless sleep on shop verandahs |
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| 49. |
Read the following extract and answer the questions given below : They whisper like drizzles as they roam the streets with a lost gae as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. Find out an example of Onomatopoeia. |
| Answer» The whisper like drizzles. | |
| 50. |
Read the following extract and answer the questions given below : They whisper like drizzles as they roam the streets with a lost gae as though something they had thrown up never returned to earth. They shiver like December nights in their dreamless sleep on shop verandahs. How will you help the helpless old people ? |
| Answer» I will help the helpless old people by talking to them lovingly by checking whether they arc having their medicmes with them or by solving their problems in using computer or mobile phones | |