148222
Which of the following processes is reversible?
1 Transfer of heat by radiation
2 Electrical heating of nichrome wire
3 Transfer of heat by conduction
4 Isothermal compression
Explanation:
D Slow isothermal process of an ideal gas is reversible process as the reaction can be brought back to its initial state, while other option are irreversible process.
AIPMT-2005
Thermodynamics
148223
Why do two ice blocks join to form one block when pressed together?
1 Melting point of ice is lowered with increase in pressure
2 Melting point of ice increases with increase in pressure
3 Melting point of ice remains unchanged with increase in pressure
4 Melting point of ice is $0^{\circ} \mathrm{C}$
Explanation:
A When we press the two ice block together, then melting point of top layer of ice decreases. This top layer melts and as soon as the pressure is released and after it the molten ice freezes back into ice due to the low temperature of surroundings.
148222
Which of the following processes is reversible?
1 Transfer of heat by radiation
2 Electrical heating of nichrome wire
3 Transfer of heat by conduction
4 Isothermal compression
Explanation:
D Slow isothermal process of an ideal gas is reversible process as the reaction can be brought back to its initial state, while other option are irreversible process.
AIPMT-2005
Thermodynamics
148223
Why do two ice blocks join to form one block when pressed together?
1 Melting point of ice is lowered with increase in pressure
2 Melting point of ice increases with increase in pressure
3 Melting point of ice remains unchanged with increase in pressure
4 Melting point of ice is $0^{\circ} \mathrm{C}$
Explanation:
A When we press the two ice block together, then melting point of top layer of ice decreases. This top layer melts and as soon as the pressure is released and after it the molten ice freezes back into ice due to the low temperature of surroundings.