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ECAT Chemistry Chapter 21 Alkyl Halides Online Test MCQs With Answers
Question # 1
Alkyl halides react with lithium dialkyl copper reagents to give
Choose an answer
Alkenes
Alkyl copper halides
Alkanes
Alkenyl halides
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Question # 2
Hydrolysis of Grignard's reagent gives:
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Alkane
Alkyl
Halide
Alcohol
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Question # 3
Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent
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A ketone
An aldehyde
An ether
Water
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Question # 4
The compounds or species in search of electrons are called
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Elctrophiles
Nucleophile
Nitrities
Bases
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Question # 5
If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a
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primary alcohol
Secondary alcohol
Tertiary alcohol
Aromatic alcohol
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Question # 6
What happens when CCl
4
is treated with AgNO
3
solution?
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NO
2
will be evolved
A white ppt. of AgCl will form
CCl
4
will dissolve in AgNO
3
solution
Nothing will happen
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Question # 7
Alkyle halides can be prepared by treating halogen acids with
Choose an answer
Ethane
Ethanol
Ethene and ethanol
Aldehyde
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Question # 8
Which bond is most stable
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C - Cl
C - F
C - Br
C - I
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Question # 9
Primary carbon attaches with other hydrogen atoms directly:
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One
Two
Three
At least one or more than it
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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
An electrophile may be
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Positive
Negative
Neutral
Both c and a
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Question # 12
C- X bond is strong in
Choose an answer
CH
3
Cl
CH
3
Br
CH
3
F
CH
3
I
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Question # 13
CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF
2
Cl.
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CHF Cl C FCl
CH Cl CF
2
Cl
CHF CF
2
Cl
C FCl CF
2
Cl
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Question # 14
Elimination bimolecular reactions involve:
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First order Kinetics
Third order kinetics
Zero order kinetics
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Question # 15
When formaldehyde is added to Grignard reagent we get
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Aldehyde
Acetone
Primary alcohol
Secondary alcohol
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Question # 16
The chloroform reacts with NaOH to give
Choose an answer
CH
3
COONa
Sodium oxalate
CH
3
OH
HCOONa
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Question # 17
For which mechanisms, the first step involved is the same:
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E
1
and E
2
E
2
and SN
2
E
2
and E
1
E1 and SN
1
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Question # 18
What is the total number of different chloroethanes, formula C
2
H
6-n
Cl
n
, where n can be any integer from 1 to 4
Choose an answer
4
6
7
8
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Question # 19
Alkyle magnesium halides are known as
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Simon-smith reagent
Tollen's reagent
Grignard's reagent
Barford's reagent
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Question # 20
The reaction of alcohol with SOCI
2
in the presence of pyridine as catalyst gives
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Acids
Acid chloride
Alkyl halide
Benzene
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Question # 21
The reaction of an alkyl halide with RCOOAg produces
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Ester
Ether
Aldehyde
Ketone
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Question # 22
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 # 23
Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated
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Question # 24
If carbon dioxide is bubbled through solution of Grignard's reagent in ether and the resultant product is reacted with hydrochloric acid, it gives
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An alkane
Al alcohol
A carboxylic acid
An aldehyde
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Question # 25
Catalyst in the reaction ROH + SOCl
2
-------> RCL+SO
2
+HCl is:
Choose an answer
ZnCl
2
Pyridine
H
2
SO
4
Either
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Question # 26
Alkyl halides on treatment with aqueous KOH give
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Phenol
Alcohol
Aldehyde
Ketone
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Question # 27
Cl
2
reacts with CS
2
in presence of AlCl
3
to form
Choose an answer
CHCl
3
CCl
4
C
2
H
5
Cl
C
2
H
6
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Question # 28
Choose an answer
Electrophilic addition
Electrophilic substitution
Free radical substitution
Nuclophilic addition
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Question # 29
Any other aldehyde except formaldehyde on reaction with Grignard's will produce
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Secondary alcohol
Primary alcohol
Tertiary alcohol
Aromatic alcohol
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Question # 30
Which of the following does not give iodoform test?
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Ethanol
Ethanal
Acetophenone
Bezophenone
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Question # 31
Metal used in the preparation of Grignard's reagent is:
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Ca
Na
Mg
Zn
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