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IIT JEE Organic Compounds Containing Halogens
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1. Mistard gas is
Dichlorodiethyl sulphide
Dichlorodimethyl sulphide
Dichlorodiethyl ether
None of these.
2. Westrosol is
Trichloroethene
1 1 1-Trichloroethene
1 1 2-Trichloroethene
Trichloromethanol.
3. Iodoform s a ...... at room temperature.
Gas
Thick viscous liquid
Volatile liquid
Crystalline solid.
4. Westorn is
1 1 2 2-Tetrachloroethane
1 1-Dichloropropanone
1 3-Dichloropropanone
1 2-dichloroethene.
5. Chloral on treatment with aqueous NaOH produces?
Ethanal
Propanol
Chloroform
Chloroethanal.
6. IUPAC name of Gammexane isHexachlorocyclohexaneNone of these
Hexachlorobenzene
Benzene hexachloride
1 2 3 4 5 6-
None of these.
7. When cholroform reacts with acetone the product is
Chloral
dichloroacetone
Chloropicrin
Chloretone.
8. Which of the following compounds do not respond to silver nitrate test ?
Vinyl chloride
Allyl chloride
Chlorocyclohexane
Benzyl chloride.
9. Which of the following statements are corrcet ?
Alkyl bromides are lighter than water
Tetrachloromethane is heavier than water
Alkyl chlorides undergo nucleophilic substitution more easily than alkyl bromides
Fluorobenzene can be prepared by Sandmeyers reaction.
10. 2-Chloro-2-methyl propane on reaction with aq. KOH gives X as the major product X is
2-Butene
2-Methyl-
1-propene
1-Butene
11. 2 2-Dichloropropane on alkaline hydrolysis gives
2 2-Propanediol
Propanol
Propanone
Ethanal.
12. When tert-butyl chloride is made to react with sodium methoxide the major product isDimethyl ether
Dimethyl ether
Di-tert butyl ether
Tert-Butyl methyl ether
Isobutylene.
13. An alkyl halide may be converted tnto an alkene by
Addition
substitution
Elimination
None of these.
14. 2-Chloro-2methyl butane on reaction with alc. KOH gives X as the major product X is
2-Methyl-1-butanol
2-Methyl-1-butene
2-Methyl-2-butene
2-Methyl-2-butanol.
15. The major product of reaction of alcoholic silver nitrite with ethyl bromide is
Ethane
Nitroethane
Ethyl nitrite
Ethyl alcohol.
16. NBS is a specific reagent for
Nucleophilic substitution
Electrophilic substitution
Allylic substitution
Electrophilic addition.
17. When chloroform is exposed to air and sunlight it givesCarbon tetrachloride
Mustard gas
Lewisite
Carbonyl chloride
None of these.
18. Only two isomeric monochloro derivatives are possible for
n-Butane
2 4-Dimethylpentane
Benzene
2 4-Dimethylpentane.
19. The major product of reaction of alcoholic silver nitrite with ehtyl bromide is
Ethane
Ethene
Nitroethane
Ethyl nitrite.
20. Which of the following is not a promary alide?
Isobutyl bromide
Neo-Pentyl chloride
Isopentyl bromide
All are primary halides.
21. DDT is formed form
Benzene and chlorobenzene
Chloral and chlorobenzene
Chloral and benzene
Chlorobenzene adn chlorine.
22. Treatment of ammonia with excess ethyl choloride will yield
Triethyl amine
Diethyl amine
Volatile liquid
Tetraethylammonium chloride.
23. Ethyl bromide reacts with Zn - Cu couple in the presence of ethyl alcohol to form
Butane
DEiethyl ether
Methane
Ethane.
24. If chloroform is left open in the air in the presence of sunlight
Explosion takes place
Polymerization takes place
Poisonous gas phosgene is formed
No reaction takes place.
25. Out of the following compounds which one will have zero dipole moment ?
Chloromethane
dichloromethane
Trichloromethane
None of these.
26. Geminal dihalides on hydrolysis give
Ketomes
Aldehydes
Ketones and aldeehydes
Alcohols.
27. Which of the following has the highest boiling point ?
1-Chloropentane
2-Chloropentane
3-Chloropentane
All have equal boiling point.
28. Dipole moment is shown by
1 4-Dichorobenzene
cis-1 2-dichloroethylene
tans-1 2-dichloroethylene
Tetrachloromethane.
29. Which of the following compounds can exhibit optical isomerism?trans-1 3-dichlorocyclobutane.
Chlorocyclopropane
cis-1 2-Dichlorocyclopropane
trans-12-Dichlorocyclopropane
None of these.
30. A mixture of ethyl iodide and n-propyl iodide is subjected to Wurtz eraction. Which of the following compounds is not formed during the reaction ?
Butane
Propane
Pentane
Hexane.
31. Which of the following alkyl halides can exhibit enantiomerism ?
n-Butyl chloride
iso-Butyl chloride
sec-Butyl chloride
tert-Butyl chloride.
32. Ethylene chloride and ethylidene chloride are isomeric compounds. Identify the statement that is not applicable to both of them.
Both of them are dihalogen derivatives
Both of them give Beilstein test
Both of them react with alc. KOH and give same product
Both of them react with aqueous KOH and give same product.
33. Which of the following halides would undergo nucleophilic substitution most readily?
1-Chloro-1-butene
2-Chloro-1-butene
3-Chloro-1-butene
4-Chloro-1-butene.
34. 2-Bromo-3 3-dimethylbutane on reaction with aqueous KOH yields ____________ as the major product. The missing item is
2 3 3-Trimethyl-1-propanol
2 2-Dimethyl-3-butanol
2 3-Dimethyl-2-butanol
None of these.
35. Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives
0-Cresol
p-Cresol
2 4-Dihydroxytoluene
Benzyl alcohol.
36. Chlorobenzene can be prepared by reacting benzenediazonium chloride with
Hydrochloric acid
Cuprous chloride
Chlorine in presence of anhydrous aluminium chloride
Nitrous acid.
37. Butaneitrite may be prepared by heating
Propyl alcohol with KCN
Butyl chloride with KCN
Butyl alcohol with KCN
Propyl chloride with KCN.
38. Which of the following compounds will react with ethanolic KCN?
Chlorobenzene
Vinyl chloride
Allyl chloride
4-Chlorotoluene.
39. When chloroform reacts with benene in the presence of aluminium chloride the product formed isTriphenyl chloromethane
1 1 1-Trichloroethane
Trichlorophenyl methane
Triphenyl methane
4-Chlorotoluene.
40. 1-Phenyl-2-chloropropane when treated with alcoholic KOH gives ..... as the major product.3-Phenyl-1-propanol.
1-Phenylpropene
3-Phenylpropene
1-Phenyl-2-propanol
None of these.
41. Which of the following is most reactive towards nucleopholic substitution ?
Chlorobenzene
2 4 6-Trinitrochlorobenzene
2 4-Dimitrochlorobenzene
2-Nitrochlorobenzene.
42. Hunsdiecker reaction is used for preparation of alkyl chlorides and alkyl bromides starting from
Diazonium salts
Silver salt of carboxylic acids
Sodium aslt of caryoxylic acids
Alcohols.
43. Carbylamine test is performed in alcoholic KOH by heating a mixture ofAn alkyl cyanide and a primary amine.
Chloroform and silver powder
Trihalogenated methane and a promary amine
An alkyl halide and a primary amine
None of these.
44. Iodobenzene can be converted into diphenyl by
Wurtz reaction
Wurtz-Fittig reaction
Ullamann reaction
Frankland reaction.
45. The reaction between a primary amine chloroform and a few drops of alcoholic KOH is known as
Franklands reaction
Cannizzaros reaction
Wurtz reaction
Carbylamine reaction.
46. Which of the following halides is not a primary halide ?
iso-Pentyl chloride
neo-Pentyl chloride
iso-Butyl chloride
iso-Propyl chloride.
47. Chlorobenzene reacts with Mg in dr ether to give a compound (A) which further reacts with ethanol to yield
Ethylbenzene
Phenol
Phenylemethyl ether
Benzene.
48. The reaction of toluene with chlorine in the presence of ferric chloride gives mainlyBenzyl chloride
m-Chlorotoluene
Benzylchloride
o- and p-Chlorotoluene
None of these.
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