Which of the following has the smallest mass?

(a)

6.023 × 10²³ atoms of He

(b)

1 atom of He

(c)

2 g of He

(d)

1 mole atoms of He

The volume occupied by 4.4 g of CO₂ at S.T.P

(a)

22.4 liter

(b)

2.24 liter

(c)

0.24 liter

(d)

0.1 liter

Which of the following represents 1 amu?

(a)

Mass of a C – 12 atom

(b)

Mass of a hydrogen atom

(c)

1/12^th of the mass of a C – 12 atom

(d)

Mass of O – 16 atom

The volume occupied by 1 mole of a diatomic gas at S.T.P is

(a)

11.2 liters

(b)

5.6 liters

(c)

22.4 liters

(d)

44.8 liters

The gram molecular mass of oxygen molecule is

(a)

16 g

(b)

18 g

(c)

32 g

(d)

17 g