N.T.P. corresponds to:
A. 1 atm absolute pressure & 0°C
B. 760 mm Hg gauge pressure & 0°C
C. 760 torr & 15°C
D. 101.325 KPa gauge pressure & 0°C
‘Giga’ stands for:
A. 109
B. 10-12
C. 1012
D. 1015
The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be:
A. Basic
B. More acidic
C. Neutral
D. Of the same acidity
In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the:
A. Total pressure
B. Absolute humidity at a given temperature
C. Both A. and B.
D. Neither A. nor B.
1 gm mole of methane (CH4) contains:
A. 6.02 × 1023 atoms of hydrogen
B. 4 gm atoms of hydrogen
C. 3.01 × 1023 molecules of methane
D. 3 gms of carbon
If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is ____ times:
A. 10
B. 100
C. 1000
D. 10000
The equilibria relations in a multi-component and multiphase system cannot be calculated with the help of the:
A. Phase rule
B. Experimental data
C. Empirical equations
D. Theoretical equations
Solutions which distil without change in composition are called:
A. Ideal
B. Saturated
C. Supersaturated
D. Azeotropic
Cp is expressed in S.I. unit as:
A. J/kg.°K
B. 0°K
C. W/m2.°C
D. W/m.°K
Increasing the temperature of an aqueous solution will cause decrease in its:
A. Molality
B. Mole fraction
C. Weight percent
D. Molarity
