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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Chemistry Chapter 21 Alkyl Halides

00:00
Question # 1

Which of the following is a nucleophile

Question # 2

What is the total number of different chloroethanes of formula C2H6-nClnpossible (n may be 1 to 6)

Question # 3

which one of the following is not a nucleophile?

Question # 4

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

Question # 5

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

Question # 6

The rate of E1reaction depends upon

Question # 7

Grignard reagent is not prepared in aqueous medium but prepared in ether medium because

Question # 8

The reaction of an alkyl halide with RCOOAg produces

Question # 9

Reaction of Griganard's reagent with CO2gives:

Question # 10

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

Question # 11

For the carbylamine reaction we need hot alc.KOH and

Question # 12

SN2 reaction has order of reaction :

Question # 13

If carbon dioxide is bubbled through solution of Grignard's reagent in ether and the resultant product is reacted with hydrochloric acid, it gives

Question # 14

Primary carbon attaches with other hydrogen atoms directly:

Question # 15

Alkyl halides on treatment with metallic Na give

Question # 16

Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated

Question # 17

Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to

Question # 18

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

Question # 19

Which reaction is example of nucleophilic substitution

Question # 20

Among the following the most reactive towards alcoholic KOH is

Question # 21

Allyl chloride on dehydrochlorination gives

Question # 22

When primary amine reacts with chloroform in ethanolic KOH, then the product is

Question # 23

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

Question # 24

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 # 25

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

Question # 26

Benzene hexachloride is used as

Question # 27

The alkyl halide molecule on which a nucleophile attacks is called

Question # 28

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

Question # 29

Alkyle halides can be prepared by treating halogen acids with

Question # 30

Grignard reagent is reactive due to :

Submit

Prepare Complete Set Wise ECAT Chemistry Chapter 21 Alkyl Halides MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Chemistry Chapter 21 Alkyl Halides MCQ`s Test

  • M
    Mehreen Ather 19 - Dec - 2024 07 Min 45 Sec 85/120
  • G
    GOVT. SUFFA EDUCATION CENTER GIRLS MURIDKE 01 - Jun - 2024 08 Min 45 Sec 85/120
  • A
    Ayra Arshad 06 - Jul - 2024 04 Min 14 Sec 80/120
  • A
    Ali Asad Samejo 29 - Mar - 2024 05 Min 16 Sec 80/120
  • M
    Maryam Hamda 27 - May - 2024 14 Min 17 Sec 70/120
  • M
    Muhammad Ali 27 - Jun - 2024 04 Min 34 Sec 60/120
  • H
    Huzaifa Asim 30 - May - 2024 06 Min 34 Sec 60/120
  • N
    Nauman Iqbal 12 - Apr - 2024 13 Min 49 Sec 60/120
  • N
    Namers studio 13 - May - 2024 07 Min 23 Sec 55/120
  • R
    Rabbia Munir 10 - Mar - 2024 07 Min 28 Sec 55/120
  • T
    Tamshi Sohail 04 - May - 2024 08 Min 28 Sec 55/120
  • G
    Gulfam Ahmad 06 - May - 2024 09 Min 34 Sec 55/120
  • Z
    Zoya Zoya 27 - May - 2024 18 Min 52 Sec 55/120
  • R
    Rana waqar 02 - Jun - 2024 09 Min 52 Sec 50/120
  • A
    Abdullah Zubair 05 - Jan - 2025 11 Min 02 Sec 50/120

ECAT Chemistry Chapter 21 Important MCQ's

Sr.# Question Answer
1 The elimination of hydrogen halide from adjacent carbon atoms is called
A. Dehydrogenation
B. Hydrogenation
C. Dehydrohalogenation
D. Hydrohalogenation
2 Ethyl bromide is formed by the reaction of HBr with
A. Ethane
B. Ethene
C. Ethyne
D. Propane
3 Alkyl halides on treatment with metallic Na give
A. Alkynes
B. Alkenes
C. Alkanes
D. Alcohols
4 Alcohol can be prepared from Grignard's reagent with an aldehyde: If we start with formaldehyde the product alcohol with be
A. Primary
B. Secondary
C. Territory
D. Aromatic
5 Ethyl alcohol gives ethyl chloride with the help of
A. SOCl2
B. NaCl
C. Cl2
D. KCl
6 Halogens on treating with silver salts of acids give
A. Alcohol
B. Ester
C. Phenol
D. Alkyl halide
7 Which one of the following is not a nucleophile
A. H2O
B. H2S
C. BF3
D. NH3
8 If Grignard reagent is allowed to react with another alkyl halide the main product is
A. An alkane
B. Cyclo alkane
C. Alkyne
D. An alkene
9 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
10 Which responds to +ve iodoform test?
A. Butanol-1
B. Butan-1-al
C. Butanol-2
D. 2-pentanone

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!