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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the communication protocol that sets the standard used by every computer that accesses web-based information?A. XMLB. DMLC. HTTPD. HTML |
| Answer» Correct Answer - C | |
| 2. |
After a user has saved and deleted many files, many scattered areas of stored data remain that are too small to be used efficeincy, causing_______A. disorderB. turmoilC. disarrayD. fragmentation |
| Answer» Correct Answer - D | |
| 3. |
Water samples were collected at points A, B and C in a segment of a river near a sugar factory and tested for BOD level. The BOD levels of samples A, B and C were 400 mg/L, 480 mg/L and 8 mg/L respectively. What is this indicative of? Explain why the BOD level gets reduced considerably at the collection point C? |
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Answer» At collection points A and B, the BOD level is high due to high organic pollution caused by sugar factory and sewage discharge. At the collection point C, the water was released after secondary treatment/ biological treatment (where vigorous growth of useful aerobic microbes into flocs consume the major part of the organic matter present in the river water or effluent due to sugar factory and sewage discharge). |
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| 4. |
The coordination number of the complex formed by this ligand with 3d transition metal and inner transition metal is respectively(1) 6 and 6(2) 8 and 6(3) 6 and 8(4) 8 and 8 |
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Answer» Correct option (3) 6 and 8 Explanation: Common CN of transition element = 6 Common CN of inner transition elements = 8 to 12 |
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| 5. |
Water samples with BOD values of 4ppm and 18ppm, respectively, are : (1) Clean and Highly polluted (2) Highly polluted and Clean (3) Clean and Clean (4) Highly polluted and Highly polluted |
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Answer» The correct option (1) Clean and Highly polluted Explanation: Clean water would have BOD value of less than 5ppm whereas highly polluted water could have a BOD value of 17ppm or more. |
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| 6. |
The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are : (1) 6 and 6 (2) 8 and 8 (3) 8 and 6 (4) 6 and 8 |
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Answer» Correct option (4) 6 and 8 Explanation: General C.No. of CN– in transition elements is 6 and in inner transition elements is 8 – 12. |
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| 7. |
The following ligand is –(1) bidentate (2) tridentate (3) tetradentate (4) hexadentate |
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Answer» The Correct option is (3) tetradentate |
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| 8. |
The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is : (1) NCS– (2) CN– (3) ethylenediamine (4) CO |
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Answer» Correct option: (1) NCS– Explanation: µ = 5.9 BM → 5 unpaired e– Mn2+ –[Ar]3d5 configuration only possible with relatively weaker ligand. So NCS– is the answer (1). |
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| 9. |
With what neutral molecule is `ClO^(ɵ)` isoelectronic Is that molecule a Lewise Base? |
| Answer» `CIO^(ɵ)` has `17+8+1=26` electrons. A neutral molecule with 26 electrons is CiF. Since Cl in CiF can further donate electrons to two more F atoms to forms `CiF_3` therefore ClF is a Lewis base. | |
| 10. |
Write balanced chemical equations for the following processes: (a) XeF2 undergoes hydrolysis. (b) MnO2 is heated with conc. HCL |
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Answer» (a) XeF2 is soluble in water but undergoes slow hydrolysis 2XeF+2H2O→2Xe+4HF+O2 (b) MnO2(s)+conc.4HCl→Cl2(g)+MnCl2(aq)+2H2O(l) |
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| 11. |
Write balanced equation for the following: (i). `NaCl` is heated with sulphuric acid in the presence of `MnO_2`. (ii). Chlorine gas is passed into a solution of NaI in water. |
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Answer» (i). `4NaCl+MnO_2+4H_2SO_4toMnCl_2+4NaHSO_4+Cl_2+2H_2O` (ii). `Cl_2+2NaIto2NaCl+I_2` |
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| 12. |
Calculate the amound of benzoic acid `(C_(6)H_(5)COOH)` required for preparing `250mL` of `0.15 M` solution in methanol. |
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Answer» Correct Answer - `4.575g` Molecular mass of `(C_(6)H_(5)COOH)` `=12xx6+5+12+32+1=122g mol^(-1)` mmoles of benzoic aci`=MxxV` ltbr. `=250xx0.15=37.5` `=37.5xx10^(-3)mol` Amount of benzoic acid `=` Moles `xx Mw_(2)` ltbr. `=37.5xx10^(-3)xx122` `=4.575g` |
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| 13. |
If the solubility product of `CuS` is `6xx10^(-16)`, calculate the maximum molarity of `CuS` in aqueous solution. |
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Answer» Correct Answer - `S=2.45xx10^(-8)mol^(-1)` Maximum molarity of `CuS` in aqueous solution is the solubility of `CuS` in `mol L^(-1)`. Let `S` is the solubility of `CuS` in `mol L^((-1)`, then `CuS hArr Cu^(2+)+S^(2-)` `K_(sp)=[Cu^(2+)][S^(2-)]` `=SxxS` ltbr. `=S^(2) mol^(2)L^(-2)` `:. S=sqrt(K_(sp))=sqrt(6xx10^(-16))` `2.45xx10^(-8)mol L^(-1)` |
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| 14. |
Nalorphene `(C_(19)H_(22)NO_(3))`, similar to morphine , is used to combat withdrawal symptoms in narcotic users. The dose of nalorphene generally given is `1.5 mg`. Calculate the mass of solution of `1.5xx10^(-3)m` aqueous solution required for the above dose. |
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Answer» Correct Answer - `W_(solution)=3.2015g` Molecular mass of Nalorphene`(C_(19)H_(22)NO_(3))` `=19xx12+1xx22+14+3xx16` `=312g mol^(-1)` `m=(W_(2)xx1000)/(Mw_(2)xxW_(1))` `1.5xx10^(-3)(1.5xx10^(-3)gxx10000)/(312xxW_(1))` `W_(1)=(1.5)/(3.12xx1.5xx10^(-3))=(10^(3))/(312)=3.2g` Weight of `H_(2)O=3.2g` Weight of solution `=3.2+1.5xx10^(-3)` `=3.2 +0.0015=3.2015g` . |
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| 15. |
Write the following in the form of balanced chemical equations:- (a) Calcium carbonate decomposes on heating to form calcium oxide and carbon – di – oxide. (b) When ammonium hydroxide is added to a solvent of iron (ll) Sulphate, a green ppt of iron (ll) hydroxide and ammonium Sulphate are formed. (c) When a nail of iron is added to a solution of copper Sulphate, iron (ll) Sulphate and copper metal are formed. (d) Zinc reacts with dil hydrochloric acid to form zinc chloride and hydrogen gas is liberated. |
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Answer» a. CaCO3 = CaO + CO2 b. 2NH4OH + FeSO4 = Fe(OH)2 + (NH4)2SO4 c. Fe + CuSO4 = FeSO4 + Cu d. Zn + 2HCl = ZnCl2 + H2 |
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| 16. |
Calculate the mass percentage of aspirin `(C_(9)H_(8)O_(4))` in acetonitrile `(CHM_(3)CN)` when `6.5g` of `C_(9)H_(8)O_(4)` is dissolved in `450g` of `CHM_(3)CN`. |
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Answer» Correct Answer - `1.424%` Mass percentage of aspirin `=(Mass of asp iri ng xx100)/(Mass of asp i r i n+Mass of CHM_(3)CN)` `=(6.5)/(6.5+450)xx100` |
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| 17. |
Many modern apartments ___ in Berlin since 1980. A) are built B) are building C) were built D) have been built E) has been built |
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Answer» Correct option is D) have been built |
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| 18. |
I was ill and ___ go to school for some days. A) can’t B) must C) could D) couldn’t E) can |
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Answer» Correct option is D) couldn’t |
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| 19. |
You can’t use this textbook now. It ___ by your friend. A) takes B) has been taken C) took D) were taken E) had taken |
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Answer» Correct option is B) has been taken |
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| 20. |
A little girl comes up to her mother and asks if she ___ go to the park with her friend. A) couldn’t B) can’t C) must D) may E) has to |
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Answer» Correct option is D) may |
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| 21. |
I can’t help ___ you about it. A) to tell B) telling C) having told D) having been told E) being told |
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Answer» Correct option is B) telling |
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| 22. |
A friend of ___ told ___ about it. A) his/my B) mine/me C) your/me D) mine/she E) their/them |
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Answer» Correct option is B) mine/me |
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| 23. |
My friend can’t go to the theatre tonight.” - ___ . A) Neither can I B) So can I C) I don’t either D) Neither do I E) So can he |
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Answer» Correct option is A) Neither can I |
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| 24. |
THE EIGHTH OF MARCH is WOMEN’S Day. A) It/their B) It/her C) It/his D) It/our E) She/her |
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Answer» Correct option is A) It/their |
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| 25. |
She _____ a white coat. A) wear B) wears C) does wear D) have |
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Answer» Correct option is B) wears |
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| 26. |
“But I can’t do ___ for him,” the girl told ___ friend. A) somebody/their B) anything/her C) something/any D) theirs/nothing E) anybody/no |
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Answer» Correct option is B) anything/her |
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| 27. |
A: Why are you sitting there? B: Frankly, there is ______ interesting to do. A) anything B) nothing C) something D) nothing else |
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Answer» Correct option is B) nothing |
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| 28. |
He asked her name and ___ told ___ ___ . A) she/him/her B) he/her/her C) she/her/his D) she/him/hers E) he/he/his |
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Answer» Correct option is D) she/him/hers |
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| 29. |
I want ___ to answer ___ question. A) her/them B) their/our C) her/him D) you/his E) you/hers |
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Answer» Correct option is D) you/his |
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| 30. |
Is there ___ interesting in the newspaper today? A) anything B) any C) something D) some E) no |
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Answer» Correct option is A) anything |
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| 31. |
She asked ___ to visit ___ sick child. A) our/their B) us/him C) them/hers D) us/her E) his/her |
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Answer» Correct option is D) us/her |
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| 32. |
Please, stay a little while” - “Of course, mum, ___ was going to suggest ___ ___ . A) he/it/myself B) we/us/ourselves C) it/it/itself D) I/it/myself E) she/us/myself |
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Answer» Correct option is D) I/it/myself |
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| 33. |
I was late. I found ___ in the house. A) each B) nobody C) one D) some E) any |
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Answer» Correct option is B) nobody |
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| 34. |
________ Mary reads in bed. A) Always B) Seldom C) Sometimes D) Never |
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Answer» Correct option is C) Sometimes |
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| 35. |
If ___ comes home early, tell ___ to wait for ___ . A) she/him/hers B) he/her/him C) he/him/me D) we/us/them E) it/me/her |
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Answer» Correct option is C) he/him/me |
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| 36. |
No, don’t wear blue. It doesn’t ______ you. A) fit B) notice C) suit D) take |
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Answer» Correct option is C) suit |
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| 37. |
Nick knows English well. Ask ___ to help you. A) her B) hers C) me D) him E) us |
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Answer» Correct option is D) him |
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| 38. |
I like the hat but it doesn’t ________ me. Have you got the same thing in a larger size? A) dress B) fit C) go well D) matchE) suit |
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Answer» Correct option is B) fit |
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| 39. |
What color are your gloves? A) They are some brown. B) Some brown gloves. C) They are color brown. D) They are brown. |
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Answer» Correct option is D) They are brown. |
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| 40. |
I wanted to ask ___ both what you thought of my latest films if ___ saw them. A) you/you B) their/we C) his/him D) me/I E) hers/you |
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Answer» Correct option is A) you/you |
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| 41. |
How ________ from London to Gatwick? A) it is going B) to go C) we can go D) can we go |
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Answer» Correct option is D) can we go |
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| 42. |
Her shoes ________ her gloves; they look very well together. A) suit B) match C) fit D) compare E) color |
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Answer» Correct option is B) match |
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| 43. |
___ shoes are black, ___ are brown. A) me/his B) our/him C) my/hers D) he/my E) their/we |
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Answer» Correct option is C) my/hers |
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| 44. |
He hasn’t bought ________ oranges. A) a lot B) much C) any D) some |
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Answer» Correct option is C) any |
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| 45. |
What color are your new shoes? A) They are brown color. B) Their brown.C) They’re brown. D) They are colour brown. |
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Answer» Correct option is C) They’re brown. |
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| 46. |
Kim _____ ski 4 years ago, but he _____ ski very well now. A) could / can B) can / could C) could / can’t D) couldn’t / can |
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Answer» D) couldn’t / can |
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| 47. |
There isn’t ________ in the restaurant. A) any people B) any persons C) anybody D) nobody |
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Answer» Correct option is C) anybody |
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| 48. |
Kim and Fred ________ home. A) are at B) are in C) they are in D) they are at |
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Answer» Correct option is A) are at |
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| 49. |
There isn’t ________ at the station. A) people B) some persons C) anyone D) somebody |
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Answer» Correct option is C) anyone |
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| 50. |
There isn’t ________ at the bus-stop. A) anybody B) people C) any persons D) somebody |
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Answer» Correct option is A) anybody |
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