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MCQ's Test For ECAT Chemistry Chapter 21 Alkyl Halides
Try The MCQ's Test For ECAT Chemistry Chapter 21 Alkyl Halides
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 21 Alkyl Halides
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Question # 1
Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because
Question # 2
Which represents nucleophilic aromatic substitution reaction?
Question # 3
Reactivity of alkyl halides with magnisium is of the order:
Question # 4
Tetrabromoethane on treatment with alcoholic zinc gives
Question # 5
Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent
Question # 6
Ethyl bromide on treatment with alcoholic KOH gives
Question # 7
The final product formed by distilling ethyl alcohol with excess of Cl2 and Ca(OH)2is
Question # 8
Primary carbon attaches with other hydrogen atoms directly:
Question # 9
Which of the followings is not a nulceophile
Question # 10
Which of the following is a nucleophile
Question # 11
By simply reacting Grignand's reagent with water we get
Question # 12
CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF2Cl.
Question # 13
Reaction of ethylamine with chloroform in alcoholic KOH produces
Question # 14
The chloroform reacts with NaOH to give
Question # 15
By reaction Grignard's reagent with the HCHO we get
Question # 16
The most reactive compound for electrophilic nitration will be
Question # 17
Which bond is most stable
Question # 18
The reaction of an alkyl halide with RCOOAg produces
Question # 19
When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is
Question # 20
When primary amine reacts with chloroform in ethanolic KOH, then the product is
Question # 21
Both E1and E2mechanism can be shown by
Question # 22
For which mechanisms, the first step involved is the same:
Question # 23
Gammexane is
Question # 24
Each of the following compounds is effective as a refrigerant. The release of which one of these causes the greatest depletion of the ozone layer
Question # 25
SN2reactions can be best carried out with:
Question # 26
The reaction of alcohol with SOCI2in the presence of pyridine as catalyst gives
Question # 27
An electrophile may be
Question # 28
Alkyl halides on treatment with metallic Na give
Question # 29
Organic compounds containing halogen atom are called:
Question # 30
1-Chlorobutane on reaction with alcoholic potash gives
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ECAT Chemistry Chapter 21 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | C6H6Cl6can be obtained from |
A. HCl and Benzene
B. Cl2and Benzene and AlCl3
C. Cl2and Benzene in diffused light
D. NaOCl and Benzene
|
| 2 |
|
A. NH3 HCl
B. KCN in C2H5OH NaOH
C. KCN in C2H5OH HCl
D. HCN NaOH
|
| 3 | Gammexane is |
A. Chlorobenzene
B. Benzyl chloride
C. Brommobenzene
D. Benzene hexachloride
|
| 4 |
|
A. Electrophilic substitution
B. Free radical reduction
C. Isomerisation
D. Nucleophilic substitution
|
| 5 | The final product formed by distilling ethyl alcohol with excess of Cl2 and Ca(OH)2is |
A. CH3CHO
B. CCl3CHO
C. CHCl3
D. (CH3)2O
|
| 6 | 1-Chlorobutane on reaction with alcoholic potash gives |
A. But 1-ene
B. Butan-1-ol
C. But-2-ene
D. Butan-2-ol
|
| 7 | Grignard's reagent on treatment with chloramine give |
A. Acetamide
B. Primary amice
C. Secondary amice
D. Urea
|
| 8 |
|
A. Condensation
B. Electrophilic substitution
C. Free radical substitution
D. Nucleophilic substitution
|
| 9 | Which represents nucleophilic aromatic substitution reaction? |
A. Reaction of benzene with Cl2in sunlight
B. Benzyl bromide hydrolysis with water
C. Reaction of NaOH with dintrofluoro benzene
D. Sulphonation of benzene
|
| 10 | Elimination bimolecular reactions involve: |
A. First order Kinetics
B. Third order kinetics
C. Zero order kinetics
|
Test Questions