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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
Alkyle halides can be prepared by treating halogen acids with
Question # 2
Which is a good nucleophile?
Question # 3
2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is
Question # 4
When metallic sodium in ether is heated with ethyl chloride, which alkane is formed
Question # 5
SN2 reaction has order of reaction :
Question # 6
DDT is formed from
Question # 7
In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?
Question # 8
A reaction in which an atom or a group of atoms replaces an atom or a group of atoms in the molecule of a substance is known as
Question # 9
Action of Zn with alkyl halides in the presence of an inert solvent forms higher alkanes. This reaction is known as
Question # 10
When primary amine reacts with chloroform in ethanolic KOH, then the product is
Question # 11
The reactivity order of alkyl halides for a paricular alkyl group is
Question # 12
Ethyl bromide on treatment with alcoholic KOH gives
Question # 13
With the increase in size of halogen atom the reactivity of an alkyl halide
Question # 14
Grignard reagent is prepared by the reaction of magnesium metal with alkyl halide in the presence of
Question # 15
Which one of the following is not a nucleophile
Question # 16
The reaction of alcohol with SOCI2in the presence of pyridine as catalyst gives
Question # 17
When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed. This reaction is known as
Question # 18
On warming with silver powder,chloroform is converted into
Question # 19
Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of
Question # 20
Hydrolysis of Grignard's reagent yields
Question # 21
Which one of the following is not a nuclelphile
Question # 22
Among the following the most reactive towards alcoholic KOH is
Question # 23
In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to
Question # 24
If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a
Question # 25
The rate of E1reaction depends upon:
Question # 26
Primary carbon attaches with other hydrogen atoms directly:
Question # 27
The alkyl halide molecule on which a nucleophile attacks is called
Question # 28
Best medhod of preparation of alkyl halide from alcohals is by its reaction with:
Question # 29
Which is a weak nucleophile
Question # 30
C- X bond is strong in
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