ECAT Pre Engineering Chemistry Chapter 21 MCQ Test With Answer

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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ECAT Chemistry Chapter 21 Alkyl Halides

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Question # 1

The order of reactivity for a given halogen in Grignard's reagent is:

Question # 2

Iodoethane reacts with sodium in ether, the product formed is

Question # 3

With the increase in size of halogen atom the reactivity of an alkyl halide

Question # 4

C- X bond is strong in

Question # 5

CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF2Cl.

Question # 6

Grignard's reagent on treatment with chloramine give

Question # 7

What happens when CCl4is treated with AgNO3solution?

Question # 8

Tertiary alkyl halides are practically inert to substitution by SN2 mechanism because of

Question # 9

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

Question # 10

Grignard's reagent on treatment with carbonyl compounds yield

Question # 11

By simply reacting Grignand's reagent with water we get

Question # 12

Which of the following alkyl halides is used as a mathylating agent

Question # 13

The reaction of an alkyl halide with RCOOAg produces

Question # 14

The reactivity order of alkyl halides for a particular alkyl group is:

Question # 15

Which of the following reagent cannot be used for preparing alkyl chloride from alcohol?

Question # 16

Which one of the following will have the maximum dipole moment

Question # 17

Ethyl chloride on treatment with aqueous alkali gives

Question # 18

1-Chlorobutane on reaction with alcoholic potash gives

Question # 19

Dehydrohalogenation of alkyl halides give

Question # 20

If ketone reacts with Grignard's reagent, it also produces alcohol, But it will be a

Question # 21

The chloroform reacts with NaOH to give

Question # 22

DDT is formed from

Question # 23

Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent

Question # 24

Alkanes may be prepared by the reaction of alkyl halides with

Question # 25

Which of the following compounds could be prepared by reacting bromoethane with KCN and then reducing the product

Question # 26

Steps in SN , reactions are:

Question # 27

Which reaction is example of nucleophilic substitution

Question # 28

In primary alkyl halides, the halogen atom is attached to a carbon which attached to how many carbon atoms?

Question # 29

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 # 30

SN2 reaction has order of reaction :

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ECAT Chapter 21 Important MCQ's

Sr.# Question Answer
1 Elimination bimolecular reactions involve:
A. First order Kinetics
B. Third order kinetics
C. Zero order kinetics
2 Unpleasant smell of carbylamine is obtained when chloroform and alcoholic KOH are heated with
A. Any aromatic amine
B. Any primary amine
C. Any amine
D. Any aliphatic amine
3
Question Image
A. Electrophilic substitution
B. Free radical reduction
C. Isomerisation
D. Nucleophilic substitution
4 Grignard's reagent on treatment with dry CO2and HCI yields
A. Ester
B. Alcohol
C. Carboxylic acid
D. Aldehyde
5 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 the above
6 The reactivity order of alkyl halides for a particular alkyl group is:
A. F >Cl>Br>I
B. Cl>Br>F>l
C. l>Br>Cl>F
D. Br>l>Cl>F
7 A carbon atom carrying a postitive charge and attached to three other atoms of groups is called
A. Caronium ion
B. Carbanion
C. Oconium ion
D. Carba ion
8 Alkanes may be prepared by the reaction of alkyl halides with
A. Alcohol
B. Carboxylic acid
C. Grignard reagents
D. None of these
9 Which one of the following in mainly responsible for depletion of ozone layer?
A. Methane
B. Carbon dioxide
C. Water
D. chloroflurocarbons
10 Ammonia like water also reacts with Grignard's reagent to give
A. Alkane
B. Alkene
C. Alkyne
D. Amide

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