CBSE Class 11 Chemistry Some Basic Concepts Of Chemistry Worksheet Set B

CBSE Class 11 Chemistry Worksheet - Some Basic Concepts Of Chemistry (1) CBSE,CCE and NCERT students can refer to the attached file. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. The study material available on our website for all CBSE classes and subjects have been prepared by teachers from all over the country. All study material has been carefully designed keeping into mind the latest CBSE examination trends.  

Ch#1 : Some Basic Concepts of Chemistry -01

Full Marks: 20


1. All questions are compulsory.

2. Please give the explanation for the answer where applicable.

Q1 - What is the mass of 3 gram atoms of calcium? (1 Mark)

Q2 -Calculate the mass of CaCO3 which is required to react with 25 ml of 0.75 M HCl. (5 Marks)

Q3 - During preparation of ammonia by Haber’s process 30 L of H2 and 30 L of N2 are mixed. The yield of NH3was 50%. Find the composition of gaseous mixtures. (3 Marks)

Q4 -Potassium bromide (KBr) contains 32.9% potassium by mass. If 6.40 g of Br2 is made to react with 3.60 g of potassium, find the actual mass of potassium which reacts with bromine. (2 Marks)

Q5 - One atom of an element weighs 1.8 x 10 -22 g . What is the atomic mass of element? (1 Mark)

Q6 -Chlorophyll contains 2.7% of Magnesium by mass.The number of magnesium atoms present in 4.00g of chlorophyll is (3 Marks)

Q7 - How much water is required to dilute 10 ml of 10 N hydrochloric acid to make it exactly decinormal? (2 Marks)

Q8 - Find the molarity of solution prepared by dissolving 4g of NaOH in 3L of solution. (2 Marks)

Q9 - How many molecules are present in 1 kg mole? (1 Mark)


Please refer to the link below for CBSE Class 11 Chemistry Worksheet - Some Basic Concepts Of Chemistry (1)



Click to View or Download pdf file
Click for more Chemistry Study Material

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

Role of Word Limit in Written CBSE Examination

The intend of this article is to let us know the significance of writing within the prescribed word limit while attempting the CBSE Board Examination. Every single question in the board examination has a pre-specified word limit and every student needs to understand...

Mathematical Literacy Free Practice Book for Students

With a larger goal to promote 21st century skills such as critical thinking and problem solving, the Central Board of Secondary Education has shared a Mathematical Literacy: Practice Book for Students. This Work Book is designed to allow learners of classes 7th to 10th...

Ganga Utsav 2020 organized by NMCG

The National Mission for Clean Ganga (NMCG) is organising the annual ‘Ganga Utsav’ on November 2nd , 3rd & 4th, 2020 on a virtual platform. The Utsav will involve storytelling, folklores, & dialogues with eminent personalities, quizzes, display of traditional...

Gandhiji Quiz by CBSE

CBSE has launched a Quiz on Mahatma Gandhi. The quiz portal can be accessed on Discover Gandhi portal at: DIKSHA platform ( and the Discover Gandhi mobile App which can be easily downloaded from Google Play Store on...

Five Tips for Brisk and Effective Revision for School and Board Examinations

The intend of this article is to present before you the 5 most efficient tips to facilitate the students to revise the entire course for the Annual School and Board Examination.  We are moving towards the upcoming examinations, almost all the academic institutions of...

What to do Post Receipt of Question Paper in the Board Examination

The intend of this article is to guide the students about the course of action they should follow once they receive the CBSE question papers in the school as well as board examination centre. Before initiating the examination there are few key aspects which the...

Studies Today