ECAT Pre Engineering Chemistry Chapter 21 MCQ Test With Answer

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ECAT Chemistry Chapter 21 Important MCQ's

Sr.#	Question	Answer
1		A. NH₃ HCl B. KCN in C₂H₅OH NaOH C. KCN in C₂H₅OH HCl D. HCN NaOH
2	If carbon dioxide is bubbled through solution of Grignard's reagent in ether and the resultant product is reacted with hydrochloric acid, it gives	A. An alkane B. Al alcohol C. A carboxylic acid D. An aldehyde
3		A. 2-bromo-3-methylbutane B. 3-methyl-2-bromobutane C. 2-methyl-3-bromobutane D. All of these
4	Which of the following compounds could be prepared by reacting bromoethane with KCN and then reducing the product	A. CH₃CH₃ B. CH₃CH₂NH₂ C. CH₃CH₂CH₂NH₂ D. CH₃CH₂CH₃
5		A. Primary alkyl halide B. Secondary alkyl halide C. Tertiary alkyl halide D. None of these
6	The rate of E₁reaction depends upon:	A. The concentration of substrate B. The concentration of nucleophile C. The concentration of substrate as well as nucleophile D. None of these
7	Ethyl alcohol gives ethyl chloride with the help of	A. SOCl₂ B. NaCl C. Cl₂ D. KCl
8	Cyanoform is ________ acid in nature than the chloroform. The missing word is	A. Stronger B. Weaker C. Amphoteric D. Neutral
9	Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to	A. The formation of less stable carbonium ion B. Resonance stabilization C. Larger carbon-halogen bond D. The inductive effect
10	Ethyl bromide is formed by the reaction of HBr with	A. Ethane B. Ethene C. Ethyne D. Propane

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ECAT Pre Engineering Chemistry Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 21 Alkyl Halides

ECAT Chemistry Chapter 21 Alkyl Halides

Reaction of ethylamine with chloroform in alcoholic KOH produces

C6H6Cl6can be obtained from

Gammexane is

The reaction of alcohol with SOCI2in the presence of pyridine as catalyst gives

When chloroform is boiled with NaOH, it gives

which one of the following is not a nucleophile?

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

Alkyl halides are considered to be very reactive compounds towards nucleophiles, because:

Alkyl halides on treatment with metallic Na give

The alkyl halide molecule on which a nucleophile attacks is called

When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is

C- X bond is strong in

Alkyl halides on treatment with Zn and HCI gives

Catalyst in the reaction ROH + SOCl2-------> RCL+SO2+HCl is:

Ammonia like water also reacts with Grignard's reagent to give

A carbon atom carrying a postitive charge and attached to three other atoms of groups is called

The rate of E1reaction depends upon:

How many monochlorobutanes will be possible on chlorination of n-butane?

Grignard's reagent on treatment with carbonyl compounds yield

SN2 reaction has order of reaction :

If Grignard reagent is allowed to react with another alkyl halide the main product is

2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

Among the following the most reactive towards alcoholic KOH is

Both E1and E2mechanism can be shown by

What is the total number of different chloroethanes, formula C2H6-nCln, where n can be any integer from 1 to 4

The most reactive compound for electrophilic nitration will be

The elimination of hydrogen halide from adjacent carbon atoms is called

Electronegativity order of alkyl halides is:

Action of Zn with alkyl halides in the presence of an inert solvent forms higher alkanes. This reaction is known as

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ECAT Chemistry Chapter 21 Important MCQ's

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C₆H₆Cl₆can be obtained from

The reaction of alcohol with SOCI₂in the presence of pyridine as catalyst gives

Catalyst in the reaction ROH + SOCl₂-------> RCL+SO₂+HCl is:

The rate of E₁reaction depends upon:

SN₂reaction has order of reaction :

Both E₁and E₂mechanism can be shown by

What is the total number of different chloroethanes, formula C₂H_6-nCl_n, where n can be any integer from 1 to 4