Mole Concept in Chemistry : Practice MCQ Questions & Answers with Explanations

0.5A/18

0.05A (C)0.5A

0.05A/18

1 mg of $C_4H_10$

1 mg of $N_2$

1 mg of Na

1 mL of water

one g-atom of nitrogen

One mole of water

One mole of sodium

One molecule of H2So4

200 cc of $NH_3$ at S.T.P

150 cc of N3 at S.T.P

50 cc of $SO_2$ at S.T.P

150 cc of $O_2$ at S.T.P

24g of c (12)

56g of Fe (56)

27g of Al (27)

108g of Ag (108)

One mole is oxygen

One molecule of sulphur trioxide

100 amu of uranium

44 g of carbon dioxide.

0.01 g of hydrogen

0.085 g of $NH_3$

320 mg of gaseous $SO_2$

All the the above

0.01 g of hydrogen

0.085 g of $NH_3$

320 mg of gaseous $SO_2$

All the above.

16/N

32/N

16 N

32 N (N is the Av. const.)

One mole

Two mole

Three mole

Four moles

0.5 mol

0.20 mol

0.40 mol

0.25 mol

1

0.5

5

10

15 L of $H_2$ gas at S.T.P

5 L of $N_2$ gas at S.T.P

0.5 g of $H_2$ gas

10 g of $O_2$ gas

1.8 g

18 g

3.6 g

36 g

1 litre of oxygen at S.T.P.

32 litres of oxygen at S.T.P.

22.4 litres of oxygen at S.T.P.

$6.02 \times 10^{23}$ molecules of oxygen at any temperature and pressure.

$6.02 \times 10^{23}$

$3.011 \times 10^{23}$

$0.6022 \times 10^{23}$

$60.22 \times 10^{23}$

$6.02 \times 10^{22}$

$12.04 \times 10^{22}$

$1.806 \times 10^{23}$

$31.80 \times 10^{23}$

0.20mg

0.02mg

0.55mg

1.00mg

3

12

32

44

13g

23g

1 g

1/23g