Practice Test

1) Pick up the correct statement about alkyl halides

2) Which statement is correct ?

3) An alkyl iodide on standing darkens, due to

4) Methyl chloride reacts with silver acetate to yield

5) The reactivity order of alkyl halides depends upon

6) For a given alkyl group, the densities, boiling point, melting point are in the order

7) An alkyl halide may be converted into an alcohol by

8) Most readily hydrolysed halide is

9) Isobutyl chloride and butyl chloride are

10) Formation of alkane by the action of Zn on alkyl halide is called

11) Which group is displaced by a halogen group ?

12) Which reagent is useful in increasing the carbon chain of an alkyl halide ?

13) The products of reaction of alcholic silver nitrate with ethyl bromide are

14) 2-Bromopentane is heated with potassium ethoxide in etnanol. The major product is

15) A mixture of sodium acetate and soda lime is heated and the product treated with excess of chlorine in presence of bright sunlight. The product is

16) The reactivities of methyl chloride (A), propyl chloride (B) and chlorobenzene (C) are in the order

17) A mixture of 1-chloropropane and 2-chloropropane when treated with alcoholic KOH, it gives

18) Treatment of ammonia with excess of ethyl chloride will yield

19) Ethyl bromide and iso-propyl chloride can be distinguished by

20) Which of the following can be obtained by halide exchange method ?

21) Which of the following do not form Grignard reagent ?

22) 1, 2-Dibromoethane is added to prevent deposition of lead metal in

23) If methyl iodide and ethyl iodide are mixed in equal proportions and the mixture is treated with metallic sodium in presence of dry ether, the number of possible products formed is

24) Preparation of alkyl halides in laboratory is least preferred by

25) Ethyl bromide reacts with lead-sodium alloy to form

26) The product obtained on treatment of ethyl chloride with potassium cyanide is reduced by sodium and alcohol to give

27) Iodoethane reacts with sodium in ether, the product formed is

28) Which one of the following is most reactive towards nucleophilic substitution reaction ?

29) Mg reacts with RBr best in

30) An alkyl chloride produces a single alkene on reaction with sodium ethoxide and etanol. The alkene further undergoes hydrogenation to yield 2-methylbutane. Identify the alkyl chloride from amongst the following

31) Which of the following reagent cannot be used for preparing alkyl chloride from alcohol ?

32) The reactivity order of halides for dehydrohalogenation is

33) Which of the following will have the maximum dipole moment ?

34) The order of reactivity of alkyl halides towards elimination reaction is

35) Both methane and ethane can be prepared in single steps by the use of

36) Ethyl chloride on treatment with aqueous alkali gives

37) Ethyl alcohol gives ethyl chloride with help of

38) 1,3-Dibromopropane reacts with metallic zinc to form

39) Tetrabromoethane on treatment with alcoholic zinc gives

40) Among the following the most reactive towards alcoholic KOH is

41) Allyl chloride on dehydrochlorination gives

42) Phosgene is a common name of

43) The reaction between alkyl halides and sodium metal is called

44) Which halide among the following is used as methylating agent ?

45) Grignard reagent is not prepared in aqueous medium but prepared in ether medium because

46) Ethyl bromide on treatment with alcoholic KOH gives

47) Ethylene reacts with bromine to form

48) Alkyl halides react with Mg in dry ether to form

49) In which case formation of butane nitrile is possible ?

50) Alkyl halides react with lithium dialkyl copper reagents to give

51) Anti-Markownikoff addition of HBr is not observed in

52) Out of the following compounds, which one will have a zero dipole moment ?

53) The Cl-C-Cl angle in 1,1,2,2-tetrachloroethene and tetrachlorometane will be about

54) 1-Chlorobutane on reaction with alcohol potash gives

55) In the addition of HBr to propene in the absence of peroxides, the first step involves the addition of

56) The intermediate during the addition of HCl to propene presence of peroxide is

57) The number of possible enantiomeric pairs that can be produced during monochlorination of 2-methylbutane is

58) The reaction of propene with HOCl proceeds through the addition of

59) In the presence of peroxide, hydrogen chloride and hydrogen iodide do not give anti-Markownikoff's addition to alkenes because

60) Among the following, the molecule with the highest dipole moment is

61) On monochlorination of 2-methylbutane, the total number of chiral compound is

62) Chloroform on reduction with Zn and HCl (alc.) gives

63) Westrosol is

64) Freon is used as

65) Chloroform is used as an

66) Chloroform is kept in dark coloured bottle because

67) Freon is

68) 20% aqueous solution of sodium chloride containing ethyl alcohol on electrolysis gives

69) Ethylene dichloride can be prepared by the reaction of HCl and

70) The compound which gives negative iodoform test is

71) A sample of chloroform before being used as an anaesthetic is tested by

72) Iodoform can be used in medicine as

73) Which is finally produced when acetylene reacts with HCl ?

74) Chloretone used as a drug is prepared by the reaction of acetone with

75) Which one is correct ?

76) A compound containing two - OH groups attached with one carbon atom is unstable but which one of the following is stable ?

77) Chloroform on reaction with acetone yields

78) Which will give a yellow precipitate with iodine and alkali?

79) Solvent is used in dry cleaning of clothes is

80) The industrial preparation of chloroform employs acetone and

81) Vicinal and geminal dihalides can be distinguished by

82) Which statement is wrong about chloroform ?

83) The hydrogen atom in chloroform is

84) Which compound is used in cooling ?

85) The substance employed as tear gas is

86) Which of the following is a camphor substitute ?

87) Which compound is used as helminthicide for elimination of book worms ?

88) The antiseptic character of iodoform is due to

89) Which of the following does not give iodoform test ?

90) The chloroform reacts with NaOH to give

91) On warming with sliver powder, chloroform is converted into

92) For the carbylamine reaction we need hot alc. KOH and

93) Slow oxidation of chloroform in air lead to

94) A compound that will form an offensive smell when heated with chloroform and alcoholic potash is

95) Which one of the following is mainly responsible for depletion of ozone layer ?

96) Reaction of ethylamine with chloroform in alcoholic KOH produces

97) Which of the following with aqueous KOH will give acetaldehyde ?

98) The reaction between primary amine, chloroform and alcoholic caustic potash is called ,

99) Unpleasant smell of carbylamine is obtained when chloroform and alcoholic KOH are heated with

100) Which of the following compounds give trichloromethane on distilling with bleaching powder ?

101) When chloroform is boiled with NaOH, it gives

102) The product formed on reaction of ethyl alcohol with bleaching powder is

103) Cyanoform is ...................... acid in nature than chloroform. The missing word is

104) How will you convert butan-2-one to propanoic acid ?

105) The insecticide and germicide, gammexane is a formulation for

106) Chlorobenzene is prepared commercially by

107) Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due to

108) Ullmann reaction is used for the preparation of

109) Chlorobenzene on treatment with Raney nickel or Al in presence of alkali gives

110) Which of the following possesses highest melting point ?

111) The most reactive compound for electrophilic nitration will be

112) Which of the following compounds on oxidation gives benzoic acid ?

113) Which chloroderivative of benzene among the following would undergo hydrolysis most readily with aqueous sodium hydroxide to furnish the corresponding hydroxyderivative ?

114) Which of the following is a free radical substitution reaction ?

115) In which of the following reactions, the product is an ether ?

116) The decreasing order of reactivity of
(I) m-nitrobromobenzene
(II) 2,4,6-trinitrobromobenzene
(III) p-nitrobromobenzene
(IV) 2,4-dinitrobromobenzene

117) Carbon atom holding halogen in aryl halides is

118) Benzene hexachloride is used as

119) Benzene reacts with chlorine to form benzene hexachloride in presence of

120) A set of compounds in which reactivity of halogen atom in the ascending order is

121) Which of the following statements about benzyl chloride is incorrect ?

122) Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH and acidification gives

123) Arrange the following compounds in order of increasing dipole moment:
(I) Toluene
(II) m-Dichlorobenzene
(III) o-Dichlorobenzene
(IV) p-Dichlorobenzene

124) The correct increasing order of reactivity of halogen gases towards halogenation of alkane is

125) Ethylene dichloride and ethylidene chloride are isomeric compounds. The false statement about these isomers is that they

126) Which of the following is a primary halide

127) Which of the following is most reactive towards nucleophilic substitution reaction ?

128) Which can undergo haloform reaction ?

129) Elimination of bromine from 2-bromobutane results in the formation of