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

What happens when CCl4is treated with AgNO3solution?

Question # 2

Which one of the following will have the maximum dipole moment

Question # 3

Which reaction is example of nucleophilic substitution

Question # 4

Alkyl halides on treatment with aqueous KOH give

Question # 5

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

Question # 6

The alkyl halide is converted into an alcohol by

Question # 7

Alkyl halides react with Mg in dry ether to form

Question # 8

Reduction of alkyl halides give

Question # 9

Iodoethane reacts with sodium in ether, the product formed is

Question # 10

An electrophile may be

Question # 11

When CO2is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

Question # 12

Reactivity of alkyl halides with magnisium is of the order:

Question # 13

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

Question # 14

The rate of E1reaction depends upon:

Question # 15

Cyanoform is ________ acid in nature than the chloroform. The missing word is

Question # 16

1, 3-Dibromopropane reacts with metallic zinc to form

Question # 17

Elimination bimolecular reactions involve:

Question # 18

Best medhod of preparation of alkyl halide from alcohals is by its reaction with:

Question # 19

Organic compounds containing halogen atom are called:

Question # 20

Alcohol can be prepared from Grignard's reagent with an aldehyde: If we start with formaldehyde the product alcohol with be

Question # 21

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

Question # 22

When CO2 is made to react with ethyl megnesium iodine, followed by hydrolysis, the product formed is:

Question # 23

DDT is formed from

Question # 24

When formaldehyde is added to Grignard reagent we get

Question # 25

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

Question # 26

The final product formed by distilling ethyl alcohol with excess of Cl2 and Ca(OH)2is

Question # 27

Alkyl halides in which a halogen atom is bonded to that carbon atom which directly bonded with one hydrogen atom is called

Question # 28

Chlorobenzene on heating with aqueous NH3under pressure in the presence of cuprous chloride gives

Question # 29

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

Question # 30

Halogens on treating with silver salts of acids give

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ECAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The order of reactivity for a given halogen in Grignard's reagent is:
A. CH3X > C2H5X > C3H4X > C4H4X
B. C2H5X > C3H7X > C4H5X > CH4X
C. C3H7X > C4H7X > CH3X > C2H5X
D. C4H4X > C3H7X > C2H5X > CH4X
2 In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to
A. Only one carbon atom
B. Two carbon atoms
C. Three carbon atoms
D. one or no carbon atom
3 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
A. CCl2F2
B. CH3OCH3
C. CH3CHF2
D. CH3CH2CH3
4 E2has molecularity :
A. One
B. Two
C. Three
D. Half
5 Chlorobenzene on heating with aqueous NH3under pressure in the presence of cuprous chloride gives
A. Benzamide
B. Nitrobenzene
C. Aniline
D. Chloroaminobenzene
6 The chloroform reacts with NaOH to give
A. CH3COONa
B. Sodium oxalate
C. CH3OH
D. HCOONa
7 The reaction between primary amine-chloroform and alcoholic caustic potash is called
A. Wurtz reaction
B. Frankland reaction
C. Cannizzaro's reaction
D. Carbylamine reaction
8 Grignard's reagent on treatment with carbonyl compounds yield
A. Pheonol
B. Alcohol
C. Alkane
D. None of these
9 When metallic sodium in ether is heated with ethyl chloride, which alkane is formed
A. Propane
B. Ethane
C. Iso-butane
D. N-butane
10 The alkyl halide molecule on which a nucleophile attacks is called
A. Substrate
B. Subsituent
C. Substituted
D. All of these

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