4

Heat pump

Accomplishes only space heating in winter

Accomplishes only space cooling in summer

Accomplishes both (A) and (B)

Works on Carnot cycle

C. Accomplishes both (A) and (B)

4

Sub-cooled

Saturated

Non-solidifiable

None of these

4

The value of gas constant 'R' is

1.987 cal/gm mole °K

1.987 BTU/lb. mole °R

Both (A) and (B)

Neither (A) nor (B)

4

As the entropy of the universe is increasing, day by day, the work producing capacity of a heat engine is

Not changed

Decreasing

Increasing

Data sufficient, can't be predicted

4

In Joule-Thomson porous plug experiment, the

Enthalpy does not remain constant

Entire apparatus is exposed to surroundings

Temperature remains constant

None of these

4

Pick out the Clausius-Clapeyron equation from the following:

dP/dT = ΔH/TΔV

ln P = - (ΔH/RT) + constant

ΔF = ΔH + T [∂(ΔF)/∂T]P

None of these

4

Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2.Degree of dissociation of PCl5 will

Increase on addition of an inert gas at constant pressure

Decrease on increasing the pressure of the system

None of these

4

Mass

Momentum

Energy

None of these

4

0

2

1

3

4

Zero

50%

Almost 100%

unpredictable

4

With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure

Increases

Decreases

Remain same

Decreases linearly

4

Isothermal

Irreversible

Reversible

4

Concentration

Mass

Temperature

Entropy

4

Two

One

Zero

Three

4

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

448

224

22.4

Data insufficient; can't be computed

4

6738.9

6753.5

7058.3

9000

4

Van Laar equation deals with the activity coefficients in

Binary solutions

Ternary solutions

Azeotropic mixture only

None of these

4

3

4

5

6

4

Internal energy is equal to the heat absorbed in case of a/an __________ process.

Constant volume

Polytropic

Constant pressure

4

Which of the following is not an intensive property?

Molar heat capacity

Internal energy

Viscosity

None of these

4

The same

Less than

Greater than

Different than

4

Entropy

Gibbs energy

Internal energy

Enthalpy

4

Zeroth

First

Second

Third

4

2HI H2 + I2

N2O4 2NO2

2SO2 + O2 2SO3

None of these

4

Pick out the wrong statement.

A closed system does not permit exchange of mass with its surroundings but may permit exchange of energy.

An open system permits exchange of both mass and energy with its surroundings

The term microstate is used to characterise an individual, whereas macro-state is used to designate a group of micro-states with common characteristics

None of the above

4

> 2

< 1

> 1

< 3

4

3

2

1

0

4

__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.

Bucket

Throttling

Separating

A combination of separating & throttling

4

Co-efficient of Performance (COP) of a refrigerator is the ratio of the

Work required to refrigeration obtained

Refrigeration obtained to the work required

Lower to higher temperature

Higher to lower temperature

4

Specific volume

Temperature

Mass

Pressure