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 represents nucleophilic aromatic substitution reaction?

Question # 2

When alkyl halides are heated with aqueous solution of ammonia at about 100°C, amines are formed. This reaction is known as

Question # 3

E1mechanism is generally shown by

Question # 4

For which mechanisms, the first step involved is the same:

Question # 5

By simply reacting Grignand's reagent with water we get

Question # 6

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

Question # 7

Which of the following does not give iodoform test?

Question # 8

The alkyl halide molecule on which a nucleophile attacks is called

Question # 9

Alkyl halides are reactive :

Question # 10

Which is a good nucleophile?

Question # 11

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

Question # 12

Hydrolysis of Grignard's reagent yields

Question # 13

Which of the following compounds gives trichoromethane on distilling with bleaching power?

Question # 14

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

Question # 15

Which one of the following is not a nuclelphile

Question # 16

Elimination bimolecular reactions usually obey

Question # 17

Alkyl halides on treatment with metallic Na give

Question # 18

Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because

Question # 19

Reation of which with Grignard's reagent gives primary alcohol:

Question # 20

A set of compounds in which reactivity of halogen atom in the ascending order is

Question # 21

The general formula of alkyl halides is

Question # 22

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 # 23

E2has molecularity :

Question # 24

Which responds to +ve iodoform test?

Question # 25

The alkyl halide is converted into an alcohol by

Question # 26

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

Question # 27

To get DDT, chlorobenzene has to react with one of the following compound in the presence of conc.H2SO4

Question # 28

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

Question # 29

C6H6Cl6can be obtained from

Question # 30

Primary carbon attaches with other hydrogen atoms directly:

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 How many monochlorobutanes will be possible on chlorination of n-butane?
A. 1
B. 2
C. 3
D. 5
2 2-Bromopentane is heated with potassium ethoxide in ethanol . The major product obtained is
A. 2-Ethoxypentane
B. Pent-1-ene
C. cis-Pent-2-ene
D. trans-Pent-2-ene
3 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
4 Which of the following with aqueous KOH will give acetaldehyde?
A. 1, 2-Dichloroethane
B. 1,1-Dichloroethane
C. Chloracetic acid
D. Ethyl chloride
5 Cl2reacts with CS2in presence of AlCl3to form
A. CHCl3
B. CCl4
C. C2H5Cl
D. C2H6
6 Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because
A. NO2makes the electron rich ring at ortho and para positions
B. NO2withdraws electrons at metaposition
C. NO2donate electrons at m-position
D. NO2withdraws electrons at ortho and para position
7 SN2 reaction can be best carried out with
A. Primary alkyl halides
B. Secondary alkyl halides
C. Tertiary alkyl halides
D. All the three
8 SN2 reaction has order of reaction :
A. First
B. Second
C. Third
D. Zero
9 Hydrolysis of Grignard's reagent yields
A. Alcohol
B. Aldyhyde
C. Ester
D. Alkane
10 C- X bond is strong in
A. CH3Cl
B. CH3Br
C. CH3F
D. CH3I

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!