In hot summer after a bath, the body’s

(a)

internal energy decreases

(b)

internal energy increases

(c)

heat decreases

(d)

no change in internal energy and heat

The graph between volume and temperature in Charles’ law is

(a)

an ellipse

(b)

a circle

(c)

a straight line

(d)

a parabola

When a cycle tyre suddenly bursts, the air inside the tyre expands. This process is

(a)

isothermal

(b)

adiabatic

(c)

isobaric

(d)

isochoric

An ideal gas passes from one equilibrium state (P₁, V₁, T₁, N) to another equilibrium state (2P₁, 3V₁, T₂, N). Then

(a)

T₁ = T₂

(b)

\({ T }_{ 1 }=\frac { { T }_{ 2 } }{ 6 } \)

(c)

T₁ = 6T₂

(d)

T₁ = 3T₂

When a uniform rod is heated, which of the following quantity of the rod will increase

(a)

mass

(b)

weight

(c)

center of mass

(d)

moment of inertia

When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy applied which increases the internal energy of gas is _____________.

(a)

\(\frac { 2 }{ 5 } \)

(b)

\(\frac { 3 }{ 5 } \)

(c)

\(\frac { 3 }{ 7 } \)

(d)

\(\frac { 5 }{ 7 } \)

C_v & C_P  denote the molar specific heat capacities of a gas at constant volume and constant pressure then ________________.

(a)

C_p - C_v is larger for a diatomic ideal gas than for a monoatomic ideal gas

(b)

C_p, + C_v is larger for a diatomic ideal gas than for a monoatomic ideal gas

(c)

C_p, / C_v is larger for a diatomic ideal gas than for a monoatomic ideal gas

(d)

C_p, x C_v is lesser for a diatomic ideal gas than for a monoatomic ideal gas

Two thermally insulated vessels 1 & 2 are filled with air at temp (T₁, T₂), volume (V₁, V₂ & pressure (P₁, P₂) If the valve going to the 2 vessels is opened, the temperature on the inside of the vessel at equilibrium will be ______________.

(a)

T₁ + T₂

(b)

\(\frac { { T }_{ 1 }+{ T }_{ 2 } }{ 2 } \)

(c)

\(\frac { { T }_{ 1 }{ T }_{ 2 }\left( { P }_{ 1 }{ V }_{ 1 }+{ P }_{ 2 }{ V }_{ 2 } \right) }{ { P }_{ 1 }{ V }_{ 1 }{ T }_{ 2 }+{ P }_{ 2 }{ V }_{ 2 }{ T }_{ 1 } } \)

(d)

\(\frac { { T }_{ 1 }{ T }_{ 2 }\left( { P }_{ 1 }{ V }_{ 1 }+{ P }_{ 2 }{ V }_{ 2 } \right) }{ { P }_{ 1 }{ V }_{ 1 }{ T }_{ 1 }+{ P }_{ 2 }{ V }_{ 2 }{ T }_{ 2 } } \)

1 mole of a gas with \(\gamma =\frac { 7 }{ 5 } \)  is mixed with 1 mole of gas with \(\gamma =\frac { 5 }{ 3 } \) then value of g of the resulting mixture is ____________.

(a)

\(\frac { 7 }{ 5 } \)

(b)

\(\frac { 2 }{ 5 } \)

(c)

\(\frac { 3 }{ 2 } \)

(d)

\(\frac { 12 }{ 7 } \)

A gaseous mixture consists of 16g of helium and 16g of oxygen the ratio of two specific heats of the mixture is _______________.

(a)

1.4

(b)

1.54

(c)

1.59

(d)

1.62