Daily Practice Problems
Class 11 Chemistry
daily practice problem

Question 1:

Compare the torsional strain in the gauche conformer of butane with the anti-conformer.

Draw Newman projections of both and indicate the values of the dihedral angles between Me’s.


Question 2:


(1) Butane from chloroethane using the Corey – House synthesis.

(2) Deuteropropane from isopropyl bromide


Question 3:

The compound with highest boiling point is

1) n-hexane

2) n-pentane

3) 2,2-dimethyl propane

4) 2-methylbutane


Question 4:

The order of reactivity of halogens towards halogenation of alkanes is

1) F2 > Br2 > Cl2

2) F2 > Cl2 > Br2

3) Cl2 > F2 > Br2

4) Cl2 > Br2 > F2


Question 5:

Why do the C – C bond breaks rather than C – H bonds during cracking of alkanes?


Question 6:

The number of sigma & pi bonds in 1-butene-3-yne are

a) 5 sigma; 5 pi

b) 7 sigma; 3 pi

c) 8 sigma; 2 pi

d) 6 sigma; 4 pi


    Question 7:


Correct statements are

1) I is racemic mixture by anti-addition

2) II is meso compound by anti-addition

3) I is meso compound by syn-addition

4) II is racemic compound by syn-addition


   Question 8:


Which statement is true about this reaction?

1) A is meso 1,2-butan-di-ol formed by syn-addition

2) A is meso 1,2-butan-di-ol formed by anti-addition

3) A is racemic mixture of d & l, 1,2-butan-di-ol formed by anti-addition.

4) A is racemic mixture of d & l, 1,2-butan-di-ol formed by syn-addition.


Question 9:

A compound on reductive ozonolysis produces two moles of formaldehyde and one mole of glyoxal. The compound is

1) But-2-ene

2) 1,3-butadiene

3) 1,3-pentadiene

4) 1,4-pentadiene


Question 10:

How alkene can be obtained from vicinal dihalides?


Question 11:

Ethane can be separated from Ethyne by passing the mixture through

1) Conc. H2SO4

2) Ammonical Cu2Cl2

3) Pyrogallol

4) Charcoal powder


Question 12:

How is ethyne prepared on industrial scale from Calcium carbide?


Question 13:

How will you prepare propanone from propyne?        


Question 14:

Write the reaction of cyclic polymerisation of Ethyne to benzene.


Question 15:

How is ethyne prepared from 1,2-Dibromoethane?


Question 16:

Give reaction for preparation of Benzene from Na salt of benzoic acid.


Question 17:

What happens when benzene is heated in air?


Question 18:

Give Friedel craft’s alkylation reaction of benzene to produce toluene?


Question 19:

Give Friedel craft’s acylation reaction of benzene to produce Acetophenone by using acetic anhydride?


Question 20:

Give the reaction for preparation of benzene from phenol.


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All About Daily Practice Problems on Class 11 Chemistry Hydrocarbons NCERT Chapter 9

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 11 Chemistry Hydrocarbons NCERT Chapter 9 useful.

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