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. |
Chlorobenzene on treatment with acetyl chloride and anhydrous AlCl_3 the major product formed will be |
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Answer» o-Chloroacetophenone |
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| 2. |
Chlorobenzene on reduction with Na/Al alloy and alcohol gives : |
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Answer» TOLUENE
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| 3. |
Chlorobenzene on reaction with CH_(3)Cl in the presence of anhy. AlCl_(3) will give |
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Answer» TOLUENE |
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| 4. |
Chlorobenzene on heating with NaOH at350^(@) Cunderpressure gives |
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Answer» PHENOL |
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| 5. |
Chlorobenzene on reaction with CH_3Cl in the presence of AlCl_3 will give |
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Answer» <P>TOLUENE |
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| 6. |
Chlorobenzene on heating with aqueous NH_(3) under pressure in the presence of cuprous chloride gives |
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Answer» Benzamide |
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| 7. |
Chlorobenzene on fusing with solid NaOH gives |
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Answer» benzene |
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| 8. |
Chlorobenzene on fusing with solid NaOH follwed by acidification gives |
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Answer» Benzene |
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| 9. |
Chlorobenzene is o,p-directing in electrophilic substitution reaction. The directing influence is explained by |
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Answer» `+M` of PH |
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| 10. |
Chlorobenzene is less reactive than that of alkyl chlorides towards nucleophilic substitution reactions . How can the reactivity of chlorine in chlorobenzene be increased ? |
| Answer» SOLUTION :By indroducing electron withdrawing GROUPS such as nitrogroup at the ortho and PARA POSITIONS in chlorobenzene | |
| 11. |
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl_(3). Which of the following species attacks the benzene ring in this reaction ? |
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Answer» `Cl^(-)` |
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| 12. |
Chlorobenzene is formed by reaction of chlorine with benzene in the presence of AlCl_(3). Which of the following species attacks the benzene ring in the reaction? |
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Answer» `CL^(-)` |
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| 13. |
Chlorobenzene does not give SN^(1) reaction, because of |
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Answer» chlorine is attached to sp hybridized CARBON atom. |
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| 14. |
Chlorobenzene is |
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Answer» More REACTIVE than ethyl bromide |
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| 15. |
Chlorobenzene can be prepared by reacting aniline with : |
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Answer» Zn and HCl
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| 17. |
How is chlorobenzene prepared from aniline? How is chlorobenzene converted into disphenyl? |
Answer» SOLUTION : ANILINE to CHLOROBENZENE : ![]() (2) |
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| 18. |
Chlorobenzene can be prepared by reacting aniline with |
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Answer» Nitrous acid followed by HEATING with cuprous chloride and HCl |
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| 19. |
Chloroamphenicol is used in the treatment of which of the following |
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Answer» Typhoid
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| 20. |
Chloroamphenicol is an |
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Answer» ANTIFERTILITY drug |
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| 21. |
Chloroacetic acid si a stronger acid than acetic acid due to____of the chlorine ato. |
| Answer» SOLUTION :`-I`-EFFECT. | |
| 22. |
Chloroamphenicol is |
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Answer» Broad spectrum antibacterial |
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| 23. |
Chloramphenicol is an : |
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Answer» ANTIFERTILITY drug |
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| 24. |
Chloroacetic acid has K_(a) = 1.36 xx 10^(-3). Calculate the concentration of each ion and freezing point of 0.1 M its solution, assuming molarity and malality same.(K_(f) "for"H_(2)O = 1.86 K "molality"^(-1)) |
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Answer» |
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| 25. |
Chloro acetic acid is stronger acid than acetic acid . Explain . |
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Answer» SOLUTION :Carbon ATOM of -`CH_2Cl` group acquires partial positive charge which SPREADS to oxygen of CHLORO acetate ion, when `H^(+)` is released. So the negative charge of this oxygen is stabilised and anion becomes a weak base. Correspondingly the acid becomes a strong acid.
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| 26. |
Chloroacetic acid is a stronger acid than acetic acid. This can be explained using |
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Answer» `-M` effect
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| 27. |
Chlorine water on standing loses its yellow colour due to the formation of ____________and _________ |
| Answer» SOLUTION :`HCL, HOCL` | |
| 28. |
Chlorine water on standing loses its colour and forms ........ |
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Answer» HCl only |
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| 29. |
Chlorine water on cooling deposits greenish-yellow crystals of: |
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Answer» `Cl_2. 2H_2O` |
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| 30. |
Chlorine water on cooling deposites greenish-yellow crystals of Cl_(2). XH_(2)O. What is the value of X. |
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Answer» |
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| 31. |
Chlorine was discovered by: |
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Answer» Priestley |
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| 32. |
Chlorine trioxide is paramagnetic, but chlorine hexoxide is diamagnetic. Explain. |
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Answer» Solution :CHLORINE trioxide , `ClO_(3)` has unpaired electron . HENCE it is paramagnetic . UPON dimerisation , chlorine hexoxide is formed . `Cl_(2)O_(6)` has all PAIRED electrons . Therefore it is diamagnetic .
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| 33. |
Chlorine reacts with sodium hydroxide under various condition to give |
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Answer» Sodium chloride `underset("(Conc.)")(6NaOH) +3Cl_(2) overset("heat")to5NaCl + underset("Sodium chlorate")(NaClO_(3) +3 H_(2)O)` |
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| 34. |
Chlorine shows bleaching action in : |
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Answer» dry CONDITION |
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| 35. |
Chlorine reacts with nitric oxide to form |
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Answer» `NOCl_(2)` |
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| 36. |
Chlorine reacts with excess NH_3 to give |
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Answer» `NCl_3` |
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| 37. |
Chlorine reacts with hot and cone. NaOH and produces compounds X and Y. Compound X gives a white precipitate with AgNO_(3)soln. The average bond order between CI and O atoms in Y is? |
Answer» ![]() Bond ORDER=`("TOTAL NUMBER of BONDS")/("Total resonating structures") = 5/3 = 1.67` |
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| 38. |
Chlorine reacts with ethanol to give: |
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Answer» ETHYL CHLORIDE |
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| 39. |
Chlorine reacts with ethanol to give : |
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Answer» ETHYL chloride |
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| 40. |
Chlorine reacts with cold, dil. Sodium hydroxide under various conditions to give: |
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Answer» SODIUM CHLORIDE and sodium hypochlorite |
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| 41. |
Chlorine reacts with benzadehyde to give |
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Answer» CHLOROBENZENE |
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| 43. |
Chlorine is used in water for |
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Answer» Killing GERMS |
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| 44. |
Chlorine is soluble in water and its solution is refered as ………….. . |
| Answer» SOLUTION :CHLORINE WATER | |
| 45. |
Chlorine is prepared in the laboratory by treating manganese dioxide (MnO_(2)) with aqueous hydrochloric acid according to the reaction. 4HCl(aq)+MnO_(2)(s) rarr 2H_(2)O(l)+MnCl_(2)(aq)+Cl_(2)(g) How many grams of HCl react with 5.0 g of manganese dioxide ? (Atomic mass of Mn = 55 u) |
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Answer» Solution :1 mole of `MnO_(2)`, i.e, `55+32=87g MnO_(2)` REACT with 4 MOLES of HCl, i.e., `4xx36.5g=146g` of HCl. `therefore "5.0 G of MnO"_(2)" will react with HCl"=(146)/(87)xx5.0 g=8.40g` |
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| 46. |
Chlorine is passed through boiling toluene, how many chloro derivatives would you get |
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Answer» |
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| 47. |
Chlorine is passed into dilute, cold KOH solution. What are the oxidation numbers of chlorine in the products formed ? |
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Answer» `-1and+5` |
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| 48. |
Chlorine gas is not produced by heating: |
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Answer» ELECTROLYSIS of aqueous solution of NaCl |
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| 49. |
Chlorine is most reactive towards NaOH in : |
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Answer» `CH_3Cl` |
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| 50. |
Chlorine is mixed with drinking water so that: |
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Answer» BACTERIA are killed |
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