CBSE Class 11 Chemistry Question Paper Set O Solved

Scroll down for PDF

CBSE Class 11 Chemistry Question Paper Set O Solved. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

1 Give any one characteristic of EM radiations.

2 Draw the structure of Diborane (B2H6), explaining the formation of “banana bond”

3 Can the oxidation number of any atom present in a molecule be zero? Give example

4 Why H2S always acts as reducing agent?

5 Give any one preparation of hydrogen peroxide.

6 Chlorophyll, the green colouring matter of plants which is responsible for photosynthesis,contains 2.68% of Mg by mass. Calculate the number of Mg atoms in 2g of chlorophyll.

7 “The effect of uncertainty principle is significant only for motion of microscopic particles and is negligible for the macroscopic particles.”

Justify the statement with the help of a suitable example.

Also state the Heisenberg`s uncertainty principle.


Hydrogen atom has only one electron, so mutual repulsion between electrons is absent. However, in multielectron atoms mutual repulsion between the electrons is significant. How does this affect the energy of an electron in the orbitals of the same principal quantum number in multielectron atoms? How is the energy order for Hydrogen different.

8 Identify and give the reason for the phenomenon shown in the adjoining figure.

CBSE Class 11 Chemistry Question Paper Set O

Also give any one of its outcomes.

Please click the link below to download pdf file of CBSE Class 11 Chemistry Question Paper Set O Solved


Click on the text For more study material for Chemistry please click here - Chemistry

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Error in the evaluation of answer sheets in CBSE

The education board has witnessed many events where invigilators are being suspended for allotting wrong marks to the students.  This has affected students mainly of classes X and XII in the 2019 CBSE Board Exams. The central board of secondary education has taken...

How to crack a competitive examination

“How I crack a competitive examination” is a frequently asked question by today’s students. Cracking a competitive exam is a challenging task. Attaining a huge amount of study and solving several complex problems in a limited amount of time is a huge task. Competitive...

Extension of dates by CBSE for Single Girl Child Merit (SGC) scholarship

CBSE has announced to extend dates for SGC scholarship. Previously the dates to submit the SGC scholarship form were 18 October 2019. Now dates have shifted. For online submission, the last date is 31st October. Whereas date for submission of hard copies of renewal...

CBSE to launch 'Tamanna' aptitude test

Introduction: The poor decisive condition of students to pursue their subject of interest has been an area of concern. To the ease of which CBSE is to launch ‘Tamanna’. An aptitude test in order to provide a line of guidance to students of class 9th and 10th. What is '...

Tips for exam preparation

Students often get nervous during their exams. The reason behind this nervousness is either a lack of confidence or a lack of preparedness. To overcome these fears students are advised to do their preparation in such a way that will retain their confidence. For this...

CBSE examination board hike the fee for class 10th and 12th

The CBSE (Central Board Secondary Education) increased the examination fees for classes 10 and 12 of the 2020 boards, with no profit no loss principle, from Rs. 750 to Rs 1500, for all categories of students, including SC/ST candidates for all schools throughout India...

Studies Today