Chemistry MCQ Set 8

Question : “A pure chemical compound consists of the same elements combined in the same ratio by weight” is the statement of the

1. Law of Definite Proportion
2. Law of Multiple Proportion
3. Law of Active Mass
4. Law of Reciprocal Proportion

Question : The volume of 2 moles of H₂ gas at S.T.P. is

1. 12.4 liters
2. 22.4 liters
3. 44.8 liters
4. 58.8 liters

Question : A compound which can be used for the preparation of oxygen in laboratory is

1. KMnO₄
2. HNO₃
3. KCIO₃
4. MnO₂

Question : Glycerin boils at 290°C under normal atmospheric pressure. If the pressure is reduced to 50mm of Hg, it will boil

1. Above the given temperature
2. Below the given temperature
3. At the same temperature
4. At 25°C

Question : Which S.I. unit of viscosity is correct?

1. Kg ms^-1
2. Kg m^-1s^-1
3. Kg m^-2s^-1
4. Kg ms

Question : The number of orbitals in d sub-shell is

1. 1
2. 3
3. 4
4. 5