Stoichiometry | Test For NTS PPSC FPSC, TEST

Pick out the correct statement ?

A. A substance existing above its critical temperature is called a saturated vapor
B. A mixture of vapor gas is called saturated, if the equilibrium vapor pressure of the liquid is
more than the partial pressure of the vapor at the same temperature
C. Heat added to or given up by a substance at constant temperature is called the sensible heat
D. The end points of a vapor-pressure vs. temperature curve are critical and triple points

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Category: Stoichiometry

Pick out the correct statement ?

Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because_________________?

Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the_____________?

In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the________________?

A sample of well water contains 140 gm/m3 Ca2+ ions and 345 gm/m3 Na+ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO3 in gm/m3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) ?

Silica bricks are never used for lining the_________________?

Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the________________?

Magnesite refractories are generally not used in the__________________?

An equation for calculating vapour pressure is given by, log10 P = A – B(t + c). This is called the________________?