No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules____________________?

Related Mcqs:

A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is_________________?

A. N2O4 B. N2O5 C. N2O3 D. None of these...

One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about_____________________?

A. 0.19 B. 0.33 C. 0.40 D. 0.67...

1 BTU/ft3 is approximately equal to _____________ kcal/m3?

A. 1 B. 9 C. 4 D. 252...

Pick out the wrong conversion formula for the conversion of weight units ?

A. 1 tonne = 1000 kg = 22.046 lbs B. 1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton C. 1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons D. None of these...

If pH value of a solution is 8, then its pOH value will be ____________________?

A. 6 B. 1 C. 7 D. 10...