Category: Stoichiometry

2 litres of nitrogen at N.T.P. weighs ______________ gms ?

Hamad Stoichiometry 23/11/2021

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A. 14
B. 2.5
C. 28
D. 1.25

1 bar is almost equal to __________________________ atmosphere?

Hamad Stoichiometry 21/11/2021

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A. 1
B. 10
C. 100
D. 1000

The temperature at which the second Virial co-efficient of a real gas is zero is called the_____________________?

Hamad Stoichiometry 20/11/2021

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A. Eutectic point
B. Boyle temperature
C. Boiling point
D. Critical temperature

In general, the specific heats of aqueous solutions _____________ with increase in the concentration of the solute?

Hamad Stoichiometry 16/11/2021

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A. Increase
B. Decrease
C. Remain unchanged
D. None of these

Pick out the wrong unit conversion of heat transfer rate?

Hamad Stoichiometry 16/11/2021

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A. 1 kcal/hr= 1.163 Watt
B. 1 Watt = 1.163 kcal/hr
C. 1 BTU/ft2.hr = 2.712 kcal/m2.hr
D. 1 kcal/m2.hr = 0.3687 BTU/ft2.hr = 1.163 Watt/m2

What is the total pressure exerted by a mixture of 0.45 kg mole of benzene, 0.44 kg mole of toluene and 0.23 kg mole of o-xylene at 100°C, if their vapor pressures at 100°C are 1340, 560 and 210 mmHg respectively ?

Hamad Stoichiometry 15/11/2021

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A. 756.2
B. 780.5
C. 801.5
D. 880.5

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?

Hamad Stoichiometry 15/11/2021

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A. 80.38
B. 80
C. 79.62
D. 78.51

Which of the following is the Clausius-Clapeyron Equation ?

Hamad Stoichiometry 10/11/2021

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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)

In a mixture of benzene vapor and nitrogen gas at a total pressure of 900 mm Hg, if the absolute humidity of benzene is 0.2 kg benzene/kg nitrogen, the partial pressure of benzene in mm Hg is__________________?

Hamad Stoichiometry 06/11/2021

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A. 180
B. 60.3
C. 720
D. 200

The effect of pressure on the heat capacity of the gases ______________ is negligible?

Hamad Stoichiometry 04/11/2021

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A. At pressure below one atmosphere
B. Below the critical temperature
C. Both A. & B.
D. Neither A. nor B.