This set of Chemical Process Calculation Multiple Choice Questions & Answers (MCQs) focuses on “Density and specific gravity-I”.
1. Mass per unit volume is called
a) Density
b) Molecular weight
c) Molar mass
d) Mole fraction
View Answer
Explanation: Mass per unit volume is called density.
2. Densities for ________ and ________do not change significantly at ordinary conditions with pressure.
a) Gas, liquids
b) Liquids, solids
c) Solids, gas
d) None of the mentioned
View Answer
Explanation: Densities for liquids and solids do not change significantly at ordinary conditions with pressure.
3. Specific volume is the inverse of
a) Volume
b) Pressure
c) Density
d) Flow rate
View Answer
Explanation: Specific volume is the inverse of density.
4. Specific gravity is the ratio of density of a substance to the density of a reference material.
The above given statement is
a) True
b) False
c) Only for some specific materials
d) None of the mentioned
View Answer
Explanation: Specific gravity is the ratio of density of a substance to the density of a reference material.
5. Density of water is
a) 1 gm/cm3
b) 1000 Kg/m3
c) 62.43 lb/ft3
d) All of the mentioned
View Answer
Explanation: density of water = 1 gm/cm3 = 1000 Kg/m3 = 62.43 lb/ft3.
6. Specific gravity = 0.80 26˚/4˚ notation represents
a) Specific gravity when the solution is at 26˚C and the reference substance is at 4˚C is 0.80
b) Specific gravity when the solution is at 4˚C and the reference substance is at 26˚C is 0.80
c) Both a and b
d) Neither a nor b
View Answer
Explanation: Simple rule for the representation.
7. The specific gravity of a liquid is 2.39. What is the density of this liquid in g/cm3?
a) 2.39
b) 2.39102
c) 2.39×103
d) None of the mentioned
View Answer
Explanation: Specific gravity is the ratio of the density of a substance to the density of water (1 g/cm3). Thus, density in g/cm3 = specific gravity × 1 g/cm3 = 2.39 g/cm3.
8. The specific gravity of a liquid is 2.39. What is the density of this liquid in kg/m3?
a) 2.39×103
b) 2.39
c) 2.39×102
d) None of the mentioned
View Answer
Explanation: Specific gravity is the ratio of the density of a substance to the density of water (1000 kg/m3). Thus, density in kg/m3 = specific gravity × 1000 kg/m3 = 2.39 × 103 kg/m3.
9. Specific gravity of a substance is 2.42. What is the density of the substance in lb/ft3?
a) 151
b) 252
c) 302
d) 402
View Answer
Explanation: Specific gravity is the ratio of the density of a substance to the density of a reference material.
10. Mass that a cube contains is 40 gm and having side length of 1 cm. What is the density of the material inside the cube?
a) 40 gm/cm3
b) 20 gm/cm3
c) 10 gm/cm3
d) None of the mentioned
View Answer
Explanation: Mass per unit volume is called density.
Sanfoundry Global Education & Learning Series – Chemical Process Calculation.
To practice all areas of Chemical Process Calculation, here is complete set of 1000+ Multiple Choice Questions and Answers.
