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. |
Chlorine is manufactured by |
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Answer» Birkland and EYDE's process |
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| 2. |
Chlorine is in +1 oxidation state in |
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Answer» `HCl` |
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| 3. |
Chlorine is formed when dil HCl is treated with |
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Answer» `KMnO_4` |
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| 5. |
Chlorine in vinyl chloride is less reactive because |
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Answer» `sp^(2)`-hybridised carbon has more acidic character than `sp^(3)`-hybridised carbon |
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| 6. |
Chlorine has two isotopes of atomic mass units 34.97 and 36.97. The relative abundances of these two isotopes are 0.755 and 0.245 respectively. Find the average atomic mass of chlorine. |
| Answer» SOLUTION :AVERAGE ATOMIC MASS `=34.97xx0.755+36.97xx0.245=35.46` | |
| 8. |
Chlorinegas reacts with red hot calcium oxide to give |
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Answer» bleaching POWDER and dichlorine monoxide |
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| 9. |
Chlorine gas reacts with red hot calcium oxide to give |
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Answer» Bleaching powder and dichlorine monoxide |
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| 10. |
Chlorine gas is prepared commercially by |
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Answer» electrolysis of CARBON tetrachloride |
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| 11. |
Chlorine gas is passed into a solution containing KF, Kl and KBr and CHCl_3 is added. The initial colour in CHCl_3 layer is |
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Answer» Violet DUE to FORMATION of `I_2` |
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| 12. |
write the balanced equationwhen Chlorine gas is passed into a solution of NaI in water. |
| Answer» SOLUTION :`NACL`is FORMED. | |
| 13. |
Chlorine gas is passed into a solution containig KF, KL and KBr and KBr and CHCI_3 is added . The intial colour in CHCI_3 layer is : |
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Answer» VIOLET due to frommation of `I_2` |
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| 14. |
Chlorine gas is dried over |
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Answer» QUICK lime |
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| 15. |
Chlorine gas can be dried by passing over: |
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Answer» Quicklime |
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| 16. |
Chlorine gas is liberated by the action of: |
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Answer» SULPHURIC acid on SODIUM chloride |
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| 17. |
Chlorine gas can be dried by passing over |
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Answer» quice lime |
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| 18. |
Chlorine forms many oxides. The maximum oxidation state of chlorine in it's oxide is "____________". |
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Answer» |
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| 19. |
Chlorine element has +7 oxidation state in.......and + 1 in....... |
| Answer» SOLUTION :`HClO_4,CIF` | |
| 21. |
Chlorine dissolves in water in absence of sunlight and atordinary temperatures to form compoundsA and B. The compound B decomposes on exposure to sunlight to give compound A and nascent oxygen. The compounds A and B are __________ respectively. |
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Answer» `HCL` and `HOCl` |
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| 22. |
Chlorine dioxide is best prepared by passing by |
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Answer» chlorine GAS over hot HgO |
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| 23. |
Chlorine cannot displace : |
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Answer» FLUORINE from NaF |
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| 24. |
Chlorine cannot be used |
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Answer» As bleaching agent |
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| 25. |
Chlorine cannot be used : |
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Answer» as a BLEACHING agent. |
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| 26. |
Chlorine can remove hydrogen from hydrocarbons. This is due to its________. |
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Answer» BLEACHING action |
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| 27. |
Chlorine can exist with oxidation state ranging from-1 " to " + 7 . In which of the ions chlorine will not undergo disproportionationn? |
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Answer» `CLO^(-)` |
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| 28. |
Chlorine can exhibit -1 and +1 states, while fluorine can exhibit only -1, but not +1. Why? |
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Answer» Solution :General valency of HALOGENS is one . When chlorine (or bromine or iodine) is MONO -valent , with more electronegative ELEMENTS , it exhibits +1 state. Fluorine can NEVER exhibit positive oxidation state as it the most electronegative ELECMENT. |
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| 29. |
Chlorine can be used : |
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Answer» As BLEACHING agent |
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| 30. |
Chlorine can be prepared by reacting HCL with MnO_(2). The reaction is represented by the equation. MnO_(2)(s)+4HCl(aq)rarrCl_(2)(g)+MnCl_(2)(aq)+2H_(2)O(l) Assuming that the reaction goes to completion, what mass of conc. HCl solution (36%HCl by mass) is needed to produce 2.5g Cl_(2)? |
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Answer» 5.15g |
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| 31. |
Chlorine, bromine and iodine form oxides in which the oxidation states of these halogens range from ___________ |
| Answer» SOLUTION :`+1 " to " + 7` | |
| 32. |
Chlorine bromine and iodine are placed inthe same group (17) of the periodic table because |
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Answer» They are non-metals |
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| 33. |
Chlorine bleaches only in the |
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Answer» ABSENCE of acid |
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| 34. |
Chlorine atom, ini its third excited state, react with fluorine to form compound X. the formula and shape of X are |
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Answer» `ClF_(5)`, Pentagonal |
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| 35. |
Chlorine acts as bleaching agent in presence of |
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Answer» dry AIR |
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| 36. |
Chlorine acts as a bleaching agent only in presence of |
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Answer» Sun-light |
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| 37. |
Chlorine acts as a bleaching agent only in the presence of moisture - explain. |
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Answer» Dry AIR |
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| 38. |
Chlorine acts as a bleaching agent only in the presence of |
| Answer» Answer :B | |
| 39. |
Chlorination of toluene in the presence of sunlight gives : |
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Answer» Chlorobenzene
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| 40. |
Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives …………………. . |
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Answer» O - CRESOL |
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| 41. |
Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives |
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Answer» o-Cresol
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| 42. |
Chlorinationof toluene in presence of lightand heatfollowed bytreatmentwith aqueous NaOH gives. |
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Answer» O-CRESOL
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| 43. |
Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives: |
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Answer» o-Cresol |
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| 44. |
Chlorination of toluene in preence of light and heat followed by treatement with aqueous NaOH gives. |
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Answer» o-cresol |
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| 45. |
Chlorination of toluence in the presence of light and heat followed by treatment with aqueous NaOH gives |
| Answer» Answer :A | |
| 46. |
Chlorinationof nitrmethane gives |
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Answer» `CH_(3)-CL` |
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| 47. |
Chlorination of tert-butylbenzene gives substantial amount of o- substituted product while its bromination gives nearly negligible amount of the product. Which of the following does not relate to the above reaction |
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Answer» The benzenonium ion formed in the first CASE is more STABLE than in the second case. |
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| 48. |
Chlorination of methane proceeds by: |
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Answer» electrophilic SUBSTITUTION |
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| 49. |
chlorination of ethane is carriedout in the presence of |
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Answer» ANHYDROUS`AIBr_(3)` `C_(2)H_(6) overset(CI_(2))underset(hv)RARR C_(2)H_(5)CI` |
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| 50. |
Chlorination of ethane is carried out in presence of .......... |
| Answer» Answer :D | |