Atomic ______________ of an element is a whole number?
A. Weight
B. Number
C. Volume
D. Radius
Stoichiometry
The latent heat of vaporisation__________________?
The latent heat of vaporisation__________________?
A. Decreases with increased temperature
B. Decreases as pressure increases
C. Becomes zero at the critical point
D. All A., B. & C.
The temperature at which the second Virial co-efficient of a real gas is zero is called the_____________________?
The temperature at which the second Virial co-efficient of a real gas is zero is called the_____________________?
A. Eutectic point
B. Boyle temperature
C. Boiling point
D. Critical temperature
Percentage saturation of a vapor bearing gas is always _____________ the relative saturation?
Percentage saturation of a vapor bearing gas is always _____________ the relative saturation?
A. Higher than
B. Smaller than
C. Equal to
D. Either A. or B.; depends on the system
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour________________?
A. Measures the elevation in boiling point
B. Is not dependent on the temperature
C. Is a function of the liquid phase composition
D. Measures the depression in freezing point
Size range of the colloids particles is __________________?
Size range of the colloids particles is __________________?
A. 5 – 200 milli-microns
B. 50 – 200 microns
C. 500 – 1000 microns
D. 10 – 50 Angstrom
Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?
Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?
A. 10.73 kJ
B. 16.15 kJ
C. 18.11 kJ
D. 18.33 kJ
1 kg of calcium carbide (CaC2) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?
1 kg of calcium carbide (CaC2) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?
A. 5
B. 10
C. 15
D. 20
With increase in the temperature of pure (distilled) water, its____________________?
With increase in the temperature of pure (distilled) water, its____________________?
A. pOH decreases and pH increases
B. pOH and pH both decreases
C. pH and pOH both increases
D. pH decreases and pOH increases
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?
A. 0.5
B. 1
C. 3
D. 5