Download PDF – Class 11 Chemistry Chapter 1 Exercise Questions & Answers (NCERT)

Class 11 Chemistry Chapter 1 Exercise Questions & Answers (NCERT)

Q1.

Answer: (i) H2O = 18 u (ii) CO2 = 44 u (iii) CH4 = 16 u

Q2.

Answer: Molar mass of Na2SO4 = 142 g % Na = 32.4% % S = 22.5% % O = 45.1%

Q3.

Answer: Empirical formula = Fe2O3

Q4.

Answer: (i) 44 g CO2 (ii) 22 g CO2 (iii) 22 g CO2

Q5.

Answer: Required mass = 15.4 g

Q6.

Answer: Concentration = 15.4 mol L−1

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