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ECAT Chemistry Chapter 21 Alkyl Halides Online Test MCQs With Answers
Question # 1
Allyl chloride on dehydrochlorination gives
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Propadiene
Propylene
Allyl alcohol
Acetone
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Question # 2
Organic compounds containing halogen atom are called:
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R---OH
R----X
R----NH
2
R----COH
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Question # 3
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Electronphilic substitution
Electrophilic addition
Free radical substitution
Nuclephilic substitution
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Question # 4
Carbon atom holding halogen in aryl halides is
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sp
2
-hybridesed
sp
3
-hybridesed
sp-hybridesed
sp
3
d-hybridesed
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Question # 5
In which of the following reactions is the inorganic reagent acting as a nucleophile
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Question # 6
Elimination bimolecular reactions usually obey
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First order kinetics
Second order kinetics
Third order kinetics
Zero order kinetics
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Question # 7
SN2 reaction can be best carried out with
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Primary alkyl halides
Secondary alkyl halides
Tertiary alkyl halides
All the three
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Question # 8
Steps in SN , reactions are:
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One
Two
Three
Four
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Question # 9
Grignard's reagent was prepared in:
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1900
1910
1920
1930
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Question # 10
Which of the following is a nucleophile
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OH
CH(CH
3
)
3
CH
3
+
CH
3
CH
2
CH
3
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Question # 11
The reactivity order of alkyl halides for a particular alkyl group is:
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F >Cl>Br>I
Cl>Br>F>l
l>Br>Cl>F
Br>l>Cl>F
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Question # 12
When CO
2
is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is
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Propane
Propanoic acid
Propanal
Propanol
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Question # 13
The reaction of an alkyl halide with RCOOAg produces
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Ester
Ether
Aldehyde
Ketone
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Question # 14
When CO
2
is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:
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Propane
Propanoic acid
Propanal
Propanol
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Question # 15
Alkyle halides can be prepared by treating halogen acids with
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Ethane
Ethanol
Ethene and ethanol
Aldehyde
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Question # 16
The reaction of 4-bromobenzyl chloride with NaCN in ethanol leads to
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4-Bromobenzyl cyanide
4-Cyanobenzyl chloride
4-Cyanobenzyle cyanide
4-Bromo 2-cyanobenzyl chloride
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Question # 17
Elimination bimolecular reactions involve:
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First order Kinetics
Third order kinetics
Zero order kinetics
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Question # 18
Ammonia like water also reacts with Grignard's reagent to give
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Alkane
Alkene
Alkyne
Amide
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Question # 19
Benzene hexachloride is used as
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Dye
Antimaterial drug
Antibiotic
Insecticide
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Question # 20
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Primary alkyl halide
Secondary alkyl halide
Tertiary alkyl halide
None of these
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Question # 21
The final product formed by distilling ethyl alcohol with excess of Cl
2
and Ca(OH)
2
is
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CH
3
CHO
CCl
3
CHO
CHCl
3
(CH
3
)
2
O
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Question # 22
Chlorobenzene on heating with aqueous NH
3
under pressure in the presence of cuprous chloride gives
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Benzamide
Nitrobenzene
Aniline
Chloroaminobenzene
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Question # 23
Grignard's reagent on treatment with carbonyl compounds yield
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Pheonol
Alcohol
Alkane
None of these
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Question # 24
When formaldehyde is added to Grignard reagent we get
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Aldehyde
Acetone
Primary alcohol
Secondary alcohol
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Question # 25
By simply reacting Grignand's reagent with water we get
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An alkane
Higher alkane
An alkene
An alkyne
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Question # 26
The reactivity order of alkyl halides for a paricular alkyl group is
Choose an answer
Fluoride > chloride > bromide > iodide
Chloride > bromide > fluoride > iodide
Iodide > bromide > chloride > fluoride
Bromide > iodide > chloride > fluoride
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Question # 27
Alkanes may be prepared by the reaction of alkyl halides with
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Alcohol
Carboxylic acid
Grignard reagents
None of these
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Question # 28
Grignard's reagent on treatment with dry CO
2
and HCI yields
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Ester
Alcohol
Carboxylic acid
Aldehyde
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Question # 29
The most reactive compound for electrophilic nitration will be
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Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 30
When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is
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Primary amine
Secondary amine
Tertiary amine
Mixture of amines and salt
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Question # 31
Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated
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