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. |
Chloromycetin (Chloramphenicol) is effective in the treatment of: |
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Answer» Tuberculosis |
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| 2. |
Chloromphenical is : |
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Answer» Antacids |
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| 3. |
Chloromethane on treatment with excess of ammonia yields mainly |
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Answer» N,N-Dimethylmethanamine |
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| 4. |
Chloroform with zinc dust in water gives |
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Answer» `CH_(4)` |
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| 5. |
Benzene reacts with CHCl_(3) in the presence of arhydrous AlCl_(3) to form |
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Answer» CHLOROBENZENE |
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| 6. |
Chloroform with zinc dust in water gives: |
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Answer» `C_(2)H_(5)`OH |
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| 7. |
Chloroform when treated with benzene in presence of anhydrous AlCl_3, the product formed is: |
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Answer» Chlorobenzene |
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| 8. |
Chloroform when treated with amine and KOH gives |
| Answer» Answer :D | |
| 9. |
Chloroform reacts with the following compound to give a hypnotic |
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Answer» Phenol |
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| 10. |
Chloroform reacts with aniline in presence of KOH to give |
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Answer»
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| 11. |
Chloroform on warming with anilineand alcoholic KOH gives |
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Answer» `C_(6)H_(5)CH_(2)CN` |
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| 12. |
Chloroform on reduction with Znand HCl(alc.) gives : |
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Answer» FORMIC acid |
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| 13. |
Chloroform on reaction with conc. HNO_3 gives : |
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Answer» Chloropicrin |
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| 14. |
Chloroform on reaction with acetone yields: |
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Answer» Insecticide |
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| 15. |
Condensation of acetone and chloroform in presence of alkali gives : |
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Answer» Insecticide |
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| 16. |
Chloroform on heating with silver powder gives : |
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Answer» ACETYLENE |
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| 17. |
Chloroform on exposure to air in the presence of light produces |
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Answer» PHOSPHORYL chloride. |
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| 18. |
Chloroform is used as an : |
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Answer» Antiseptic |
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| 19. |
Chloroform is stored in dark colured bottles. Explain in not more than two sentences. |
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Answer» SOLUTION :CHLOROFORM in the presence of ari and sunlight oxidises SLOWLY to FORM a highly poisounous compound called phosgene or carbonyl chloride. `UNDERSET("Chloroform")(2HCl_(3)) + underset(Air)(O_(2)) overset(hv)(rarr) underset("Phosgene")(2COCl_(2)) + 2HCl` To avoid the oxidation or chlorofom it is kept in dark or yellow coloured bottles and filled up to the brim. |
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| 20. |
Chloroform is treated with aqueous silver nitrate. What happens? |
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Answer» Solution :Pure chloroform does not give precipitate, as the C-Cl bond does not FURNISH free CHLORIDE. IMPURE chloroform gives a white silver chloride precipitate. `CHCl_(3) + (O) rarr COCl_(2) + HCl` `HCl + AgNO_(3) rarr AgCl darr + HNO_(3)` |
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| 21. |
Chloroform is stored in dark coloured bottles. Explain in not more than two sentences. |
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Answer» SOLUTION :Chloroform in presence of air and sunlight OXIDISES slowly to form a highly poisonous COMPOUND , called phosegene or carbonyl choride. `underset("chloroform")(2CHCHl_(3)) + underset("air")(O_(2)) overset(hv)to underset("PHOSGENE")(2 COCl_(2)) + 2HCl` To avoid the oxidation of chloroform m it is kept in dark or yellow coloured bottles and FILLED upto brim. |
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| 22. |
Chloroform is stored in closed dark coloured bottles completely filled so that aiir is kept out. Explain. |
Answer» Solution :Because CHLOROFORM is oxidised by air in PRESENCE of LIGHT to FORM an extremely poisonous gas carbonyl
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| 23. |
Chloroform is slowly oxidised by airin the presence of light to form |
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Answer» formyl chloride |
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| 24. |
Chloroform is prepared on large scale by the reduction of CCI_4with |
| Answer» Answer :B | |
| 25. |
Chloroform is no longer used as an anaesthetic agent because of its toxicity and carcinogenicity. Suggest a safer anaesthetic agent than this. |
| Answer» Solution :Halothane `(CF_(3)CHClBr)` is LESS toxic than `CHCl_(3)` and hence is widely used these DAYS. | |
| 26. |
Chloroform is kept in dark coloured bottle because: |
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Answer» It is inflammable |
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| 27. |
Chloroform is dichloromethane. |
| Answer» | |
| 28. |
Chloroform is generally prepared from ethanol. Iodoform gives a precipitate with AgNO_3 solution while chloroform does not. Why ? |
| Answer» Solution : C-I bond in iodoform is WEAKER than C-Cl bond of CHLOROFORM . So C-I bond of iodoform is easily broken to FORM YELLOW precipitate of AgI when heated with `AgNO_3`. | |
| 29. |
Chloroform easily gets converted to poisonous phosgene in the presence of air and sunlight. Which of the following substances is added to prevent the formation of phosgene? |
| Answer» Answer :A | |
| 30. |
Chloroform cannot be prepared from which of the following? |
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Answer» `CH_(3)OH` `underset("Ethanol")(CH_(8)CHO)+3Cl_(2) to underset("Chloral")(C Cl_(3)CHO+3HCl)` `2C Cl_(3)CHO+CA(OH)_(2)to underset("CHLOROFORM")(2CHCl_(2))+underset("Cal. Format")((HCOO)_(2)Ca` `underset("Acetone")(CH_(3)COCH_(3))+3Cl_(2)to underset("Trichloroacetone")(C Cl_(3)COCH_(3)+3HCl` `2C Cl_(3)COCH_(3)+Ca(OH)_(2) to 2CHCl_(3)+(CH_(3)COO)_(2)Ca` |
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| 31. |
Chloroform condenses with acetone to form a compound which is used as a/an: |
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Answer» HYPNOTIC Chloretone is used as hypnotic |
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| 32. |
Chloroform can be used as |
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Answer» PRODUCTION of FREON refrigirant |
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| 33. |
Chloroform can be obtained from chloral by the action of : |
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Answer» `Ca(OH)_2` |
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| 34. |
Chloroform boils at 61.7^(@)Cand the solution of 6.21g of an organic compound is dissolved in 24g of chloroform boils at 68.04^(@)C. What would be the molar mass of compound if K_(b) value is 3.63 K kg mol^(-1). |
| Answer» SOLUTION :`148.15g" "MOL^(-1)`. | |
| 36. |
Chloroform can be obtained by partial reduction of: |
| Answer» Answer :A | |
| 37. |
Chloroethane to butane |
| Answer» Solution :`2CH_(3)-CH_(2)-CL + 2NA overset("dry ETHER")RARR CH_(3)-CH_(2)-CH_(2)-CH_(3)` | |
| 38. |
Chloroform + Benzene form non-ideal solution showing positive/negative deviations. |
| Answer» SOLUTION :NEGATIVE | |
| 39. |
Chloraethane reacts with X to from diethyl ether. What is X? |
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Answer» `NAOH` |
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| 40. |
Chloroethane reacts with X to form diethyl ether. What is X? |
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Answer» `NAOH` |
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| 41. |
Chloroethane is reacted with alcoholic potassium hydroxide . The product formed is |
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Answer» `C_2H_6O` |
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| 42. |
Chloroethane, 2-chloropropane and chloroethene are treated with methoxide. Which is more reactive towards Williamson's synthesis ? |
| Answer» Solution :CHLOROETHANE is more REACTIVE. 2-Chloropropane is being `2^@` halide, is less reactive due to +I EFFECT. Chloroethene has STRONGER C-Cl BOND and so is also less reactive. | |
| 43. |
Chlorobenzene to p-chloroaniline |
Answer» SOLUTION :
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| 44. |
Chlorobenzene to aniline? |
Answer» SOLUTION :CHLOROBENZENE to ANILINE :
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| 45. |
Chlorobenzene to 4-chloro acetophenone |
Answer» SOLUTION :CHLOROBENZENE to 4-chloro ACETOPHENONE :
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| 46. |
Chlorobenzene reacts with_____in presence of conc. H_(2)SO_(4) to form DDT. |
| Answer» SOLUTION :chloral `(C Cl_(3)CHO)` | |
| 47. |
Chlorobenzene reacts with sodium metal in presence of dry ether to prepare diphenyl the name of the reaction is …… |
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Answer» FITTIG reaction |
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| 48. |
Chlorobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to yield |
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Answer» ETHYLBENZENE |
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| 49. |
Chlorobenzene reacts with alkyl chloride in the presence of sodium metal gives |
| Answer» Answer :a | |