Question

which of the following will be lightest- (jiska sabse kam mass hai, voh halka hai)

• A. 1 g O
• B. 1 g O$_2$
• C. 2 g O$_3$
• D. 0.1 g SO$_2$

Answer 1

Answer: (D)

0.1 g SO$_2$

Answer 2

The lightest sample is the one with the least mass. The given masses are 1 g, 1 g, 2 g, and 0.1 g. The smallest mass is 0.1 g. Thus, 0.1 g SO$_2$ is the lightest.