One ‘Therm’ is equivalent to___________________?
One ‘Therm’ is equivalent to___________________?
A. 105 BTU
B. 105 kcal
C. 109 BTU
D. 109 kcal
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The vapour pressure of a solution (made by dissolving a solute in a solvent) is ____________ that of the pure solvent?
The vapour pressure of a solution (made by dissolving a solute in a solvent) is ____________ that of the pure solvent?A. Less than
B. More than
C. Equal to
D. Either more or less; depends on the solventThe value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?
The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?A. 2.79
B. 1.987
C. 3.99
D. None of theseWhich of the following is the Clausius-Clapeyron Equation ?
Which of the following is the Clausius-Clapeyron Equation ?A. PV = RT + B/V + y/V2 + ….
B. (P + a/V2)(V-b) = RT
C. loge (p/p0) = (λ/R) (1/T0 – 1/T)
D. p = [RT/(V – b)] – (a/TV2)1 gm mole of methane (CH4) contains_________________?
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 carbonAir at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?
Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?A. 80.38
B. 80
C. 79.62
D. 78.51The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation_________________?
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation_________________?A. Increases with pressure rise
B. Decreases with increasing pressure
C. Becomes zero at the critical point
D. Both B. & C.