1 Kcal/kg. °C is equivalent to _______________ BTU/lb. °F ?
A. 1
B. 2.42
C. 4.97
D. None of these
Stoichiometry
For the gaseous phase reaction, N2 + O2 ⇌ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?
For the gaseous phase reaction, N2 + O2 ⇌ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by____________________?
A. Increasing the concentration of N2
B. Decrease in temperature
C. Increase in pressure
D. Decrease in pressure
In _______________ process, ions of salts react with water to produce acidity or alkalinity ?
In _______________ process, ions of salts react with water to produce acidity or alkalinity ?
A. Hydration
B. Hydrolysis
C. Electrolysis
D. Dialysis
The value of (Cp – Cv) for a real gas obeying Vander Wall’s equation is____________________?
The value of (Cp – Cv) for a real gas obeying Vander Wall’s equation is____________________?
A. R
B. > R
C. < R
D. 0.5 R
One ‘Therm’ is equivalent to___________________?
One ‘Therm’ is equivalent to___________________?
A. 105 BTU
B. 105 kcal
C. 109 BTU
D. 109 kcal
Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?
Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?
A. 1.72
B. 0.58
C. 0.5
D. 0.2
How much O2 can be obtained from 90 kg of water ?
How much O2 can be obtained from 90 kg of water ?
A. 32 kg
B. 80 kg
C. 64 kg
D. 90 kg
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?
A. AB3
B. A2B3
C. A2B
D. AB2
Which of the following has the smallest least effect on the solubility of a solute into the solvent ?
Which of the following has the smallest least effect on the solubility of a solute into the solvent ?
A. Nature of the solute
B. Nature of the solvent
C. Temperature
D. Pressure
Normality of a solution does not change with the increase in the __________________?
Normality of a solution does not change with the increase in the __________________?
A. Pressure
B. Temperature
C. Solute concentration
D. Dilution of the solution