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

SN2reactions can be best carried out with:

Question # 2

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

Question # 3

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

Question # 4

On warming with silver powder,chloroform is converted into

Question # 5

C- X bond is strong in

Question # 6

Which of the following compounds on oxidation gives benzoic acid?

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

When metallic sodium in ether is heated with ethyl chloride, which alkane is formed

Question # 11

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

Question # 12

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

Question # 13

Allyl chloride on dehydrochlorination gives

Question # 14

Grignard's reagent on treatment with dry CO2and HCI yields

Question # 15

Elimination bimolecular reactions usually obey

Question # 16

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

Question # 17

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

Question # 18

General formula of alkyl halide is:

Question # 19

Grignard's reagent on treatment with carbonyl compounds yield

Question # 20

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

Question # 21

Hydrolysis of Grignard's reagent gives:

Question # 22

The general formula of alkyl halides is

Question # 23

Ethyl alcohol gives ethyl chloride with the help of

Question # 24

1-Chlorobutane on reaction with alcoholic potash gives

Question # 25

The order of reactivity of an alkyl halide (R-X) for a particular alkyl group is

Question # 26

Which one of the following in mainly responsible for depletion of ozone layer?

Question # 27

Alkyl halides react with lithium dialkyl copper reagents to give

Question # 28

Alkyl halides on treatment with metallic Na give

Question # 29

Primary carbon attaches with other hydrogen atoms directly:

Question # 30

1, 3-Dibromopropane reacts with metallic zinc to form

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 Ethyl chloride on treatment with aqueous alkali gives
A. Ethane
B. Ethene
C. Ethanal
D. Ethanol
2 Hydrolysis of Grignard's reagent yields
A. Alcohol
B. Aldyhyde
C. Ester
D. Alkane
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 bond is most stable
A. C - Cl
B. C - F
C. C - Br
D. C - I
5 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
6
Question Image
A. Condensation
B. Electrophilic substitution
C. Free radical substitution
D. Nucleophilic substitution
7 The alkyl halide molecule on which a nucleophile attacks is called
A. Substrate
B. Subsituent
C. Substituted
D. All of these
8
Question Image
A. Electronphilic substitution
B. Electrophilic addition
C. Free radical substitution
D. Nuclephilic substitution
9 Alkyl halides on treatment with metallic Na give
A. Alkynes
B. Alkenes
C. Alkanes
D. Alcohols
10
Question Image
A. Primary alkyl halide
B. Secondary alkyl halide
C. Tertiary alkyl halide
D. None of these

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!