Class 11 Chemistry: Basic Concepts

This worksheet will help you practice fundamental concepts in Chemistry, including significant figures, stoichiometric calculations, and different laws of chemical combination.

Class 11CBSEChemistrymediumPractice

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Preview · 10 questions

Q1. Which of the following contains the maximum number of molecules?
- 1 g CO2
- 1 g N2
- 1 g H2
- 1 g CH4
Q2. What is the number of significant figures in 0.0050 ?
- 1
- 2
- 3
- 4
Q3. The sum of the number of protons and neutrons in the nucleus of an atom is called its ______.
Q4. The empirical formula of glucose (C6H12O6) is:
- C6H12O6
- CH2O
- C2H4O2
- CHO
Q5. What is the law of definite proportions?

+ 5 more in the printable PDF.