All the naturally occurring processes proceed spontaneously in a direction which leads to _______________

(a)

decrease in entropy

(b)

increase in enthalpy

(c)

increase in free energy

(d)

decrease in free energy

In a reversible process, the change in entropy of the universe is ____.

(a)

> 0

(b)

> 0

(c)

< 0

(d)

= 0

In an adiabatic expansion of an ideal gas ____________

(a)

w = -ΔU

(b)

w = ΔU + ΔH

(c)

ΔU = O

(d)

w = 0

The intensive property among the quantities below is ____________

(a)

mass

(b)

volume

(c)

enthalpy

(d)

\(\frac { mass }{ volume } \)

An ideal gas expands from the volume of 1 x 10^-3 m³ to 1 x 10^-2 m³ at 300 K against a constant pressure at 1 x 10⁵ Nm^-2. The work done is ______________

(a)

- 900 J

(b)

900 kJ

(c)

270 kJ

(d)

-900 kJ