Test: Thermodynamics- 2 - Mechanical Engineering MCQ

Which law of thermodynamics predicts the degree of completion of chemical reactions.

Entropy of the universe

Isentropic flow is always
1. zero increase in entropy flow.
2. revertrible adiabatic flow.
3. Frictionless reversible flow.

If the entropy of a system increases it means.

The energy of an isolated system is

Joule thomson coefficient is the slope of constantenthalpy lines in

With increase of pressure latent heat of steam

For a pure substance, the degree of freedom forsaturated vapour and superheated vapour are

At tripple point of water which of the followingcan be found.

The term which can differentiate thermodynamics from other sciences is ____.

When water is heated from 0º C its specificvolume will,

Which of the following is a pure substance
i. Gaseous combustion product
ii. Dry air
iii. Moist Air

During boiling vapour pressure is _______ toatmospheric pressure.

Change of state ex. freezing, melting, evaporationetc. are

First law of thermodynamics provides

A vessel of volume 1m3 contains oxygen(molecular weight = 32) at P = 1 bar and T = 47º C. The mass of oxygen in vessel is [R = 8314 J/mol-k]

As temperature increases values of C_p, C_v and g for polyatomic gas

For a free expansion process work done is

The heat transfer in a polytropic process can be given as.

The cyclic integral of (dQ - dw) is

The unit of temperature in S.I. units is

Which of the following is an extensive property.