CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set A

Access the latest CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set A. We have provided free printable Class 11 Chemistry worksheets in PDF format, specifically designed for Chapter 1 Some Basic Concepts of Chemistry. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Chapter 1 Some Basic Concepts of Chemistry Chemistry Practice Worksheet for Class 11

Students should use these Class 11 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Chapter 1 Some Basic Concepts of Chemistry, to help you prepare for school tests and final examination. Regular practice of these Class 11 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry Worksheet PDF

SOME BASIC CONCEPTS IN CHEMISTRY
 
1. (i) State the law of multiple proportions.
(ii) Sulphur forms two gaseous oxides. One of these oxides contains 50 % Sulphur while the other contains 40 % of sulphur. Show that these data illustrate the law of multiple proportions.
 
2. State the following laws:
i) Avogadro’s law
ii) Law of constant proportion
iii) Gay Lussac’s law
 
3. If the density of methanol is 0.793kgl-1What is its volume needed for making 2.5l of its 0.25 M solution ?
 
4. Why do atomic masses of most of the elements in atomic mass unit involve fraction?
 
5. 200ml of 0.05M magnesium chloride is mixed with 75ml of 0.1M silver nitrate solution. Find the number of moles and mass in grams of AgCl formed. What is the limiting reagent?
 
6. 24g of NaOH is dissolved in 300ml water. Calculate the molarity of the solution.
 
7. 4.8g of O2 was used to burn 0.15moles of Fe to Fe2O3. What mass of Fe2O3 was formed?
 
8. (i) What do you understand by the term limiting reagent?
(ii) 6.5g of Zn was reacted with excess of dil. HCl. Calculate the amount and volume of hydrogen produced at STP.
 
9. A compound contains 2.68% Mg. How many atoms of magnesium are present in 15g of the compound?
 
10. Calculate the percentage of (i) copper (ii) sulphur (iii) oxygen and (iv) water of hydration in crystalline copper sulphate, CuSO4.5H2O
 
11. A higher oxide contains 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidized. Show that this is in agreement with the law of multiple proportions.
 
12. 1.8g of an organic compound on combustion gave 2.64g of CO2 and 1.08g of water. Find the empirical formula of the compound.
 
13. Calculate the mass of the following in Kg
(i) one calcium atom
 

Please click on below link to download CBSE Class 11 Chemistry Some Basic Concepts Worksheet Set A

~ Class 11 Chemistry (Old Chapters)
CBSE Class 11 Atmospheric Pollution Worksheet A
CBSE Class 11 Behaviour of Real Gases Worksheet A
CBSE Class 11 Chemistry Environmental Chemistry Worksheet
CBSE Class 11 Chemistry Environmental Chemistry Worksheet Set A
CBSE Class 11 Chemistry Environmental Chemistry Worksheet Set B
CBSE Class 11 Chemistry Environmental Worksheet
CBSE Class 11 Chemistry Hydrogen Worksheet Set A
CBSE Class 11 Chemistry Hydrogen Worksheet Set A
CBSE Class 11 Chemistry Hydrogen Worksheet Set B
CBSE Class 11 Chemistry Hydrogen Worksheet Set B
CBSE Class 11 Chemistry P-Block Elements Worksheet Set A
CBSE Class 11 Chemistry P-Block Elements Worksheet Set B
CBSE Class 11 Chemistry P-Block Elements Worksheet Set C
CBSE Class 11 Chemistry P-Block Elements Worksheet Set C
CBSE Class 11 Chemistry S-Block Elements Worksheet Set A
CBSE Class 11 Chemistry S-Block Elements Worksheet Set B
CBSE Class 11 Chemistry States of Matter Worksheet Set A
CBSE Class 11 Chemistry States of Matter Worksheet Set A
CBSE Class 11 Chemistry States of Matter Worksheet Set B
CBSE Class 11 Chemistry The p-Block Elements Worksheet Set A
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set A
CBSE Class 11 Chemistry The s-Block Elements Worksheet Set B
CBSE Class 11 General Characteristics of Compounds of the Alkaline Earth Metals Worksheet A
CBSE Class 11 General Characteristics of p-block elements Worksheet A
CBSE Class 11 General Characteristics of the Compounds of the alkali metals Worksheet A
CBSE Class 11 Group 1 Elements Alkali Metals Worksheet A
CBSE Class 11 Group 2 Alkaline Earth Metals Worksheet A
CBSE Class 11 Group 13 Elements The Boron Tamely Worksheet A
CBSE Class 11 Group 14 Elements The Carbon family Worksheet A
CBSE Class 11 Hydrides Worksheet A
CBSE Class 11 Hydrogen Peroxide Worksheet A
CBSE Class 11 Ideal Gas equation Worksheet A
CBSE Class 11 Important Compounds of Calcium Worksheet A
CBSE Class 11 Important Compounds of Carbon and Silicon Worksheet A
CBSE Class 11 Important trends and Anomalous Behaviour of Carbon Worksheet A
CBSE Class 11 Intermolecular forces Worksheet A
CBSE Class 11 Liquid state Worksheet A
CBSE Class 11 Matter and its Classification Worksheet A
CBSE Class 11 Properties of Dihydrogen Worksheet A
CBSE Class 11 Properties and Preparation of Hydrogen Worksheet A
CBSE Class 11 Some Important compounds of sodium Worksheet A
CBSE Class 11 The Gaseous State and The Gas Laws Worksheet A
CBSE Class 11 Water and Soil Pollution Worksheet A
CBSE Class 11 Water Worksheet A

Chapter 1 Some Basic Concepts of Chemistry CBSE Class 11 Chemistry Worksheet

Students can use the Chapter 1 Some Basic Concepts of Chemistry practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 11 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Chapter 1 Some Basic Concepts of Chemistry

Our expert team has used the official NCERT book for Class 11 Chemistry to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Chemistry. You can get all this study material for free on studiestoday.com.

Extra Practice for Chemistry

To get the best results in Class 11, students should try the Chemistry MCQ Test for this chapter. We have also provided printable assignments for Class 11 Chemistry on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

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