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

When formaldehyde is added to Grignard reagent we get

Question # 2

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

Question # 3

When ethyl iodide and n-propyl iodide are allowed to react with sodium metal in ether, the number of alkanes that could be produced is

Question # 4

Grignad reagent is reactive due to

Question # 5

On warming with silver powder,chloroform is converted into

Question # 6

Both E1and E2mechanism can be shown by

Question # 7

Grignard's reagent is

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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 # 12

Among the following the most reactive towards alcoholic KOH is

Question # 13

Alkyl halides are reactive :

Question # 14

DDT is formed from

Question # 15

Ethyl bromide is formed by the reaction of HBr with

Question # 16

The elimination of hydrogen halide from adjacent carbon atoms is called

Question # 17

Grignard's reagent was prepared in:

Question # 18

Hydrolysis of Grignard's reagent yields

Question # 19

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

Question # 20

Grignard's reagent on treatment with dry CO2and HCI yields

Question # 21

The reactivity order of alkyl halides for a paricular alkyl group is

Question # 22

Grignard's reagent on treatment with carbonyl compounds yield

Question # 23

In which of the following reactions is the inorganic reagent acting as a nucleophile

Question # 24

Which of the following reacts with chloroform and base to form phenyl isocynaide?

Question # 25

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

Question # 26

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

Question # 27

Alkyl halides react with Mg in dry ether to form

Question # 28

Reaction of ethylamine with chloroform in alcoholic KOH produces

Question # 29

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

Question # 30

1-Chlorobutane on reaction with alcoholic potash gives

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
  • I
    I am Ishaxtar 25 - Mar - 2026 07 Min 12 Sec 56/120
  • N
    Namers studio 13 - May - 2024 07 Min 23 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 Allyl chloride on dehydrochlorination gives
A. Propadiene
B. Propylene
C. Allyl alcohol
D. Acetone
2 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
3 Electronegativity order of alkyl halides is:
A. Rl > RBr > RCl > RF
B. Rbr > RCl > RF >Rl
C. RCl > RF >Rl > RBr
D. RF >Ri > RBr >RII
4
Question Image
A. Electrophilic substitution
B. Free radical reduction
C. Isomerisation
D. Nucleophilic substitution
5 When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed. This reaction is known as
A. Williamsons synthesis
B. GHoffmans reaction
C. Wurtz reaction
D. Clemensen reaction
6 Cl2reacts with CS2in presence of AlCl3to form
A. CHCl3
B. CCl4
C. C2H5Cl
D. C2H6
7 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
8 Steps in SN , reactions are:
A. One
B. Two
C. Three
D. Four
9 1-Chlorobutane on reaction with alcoholic potash gives
A. But 1-ene
B. Butan-1-ol
C. But-2-ene
D. Butan-2-ol
10 With the increase in size of halogen atom the reactivity of an alkyl halide
A. Increases
B. Decreases
C. Remain constant
D. None of these

Test Questions

Is this page helpful?