Specific Heat Capacity

Q. If specific heat of a substance is infinite, it means:

1. Heat is released.
2. Infinite amount of heat is released.
3. Heat is absorbed.
4. Temperature does not change.

Q. Calculate the amount of heat required to raise the temperature of $40kg$ of compound from $10{}^{\circ }C$ to $35{}^{\circ }C$ . Specific heat capacity of the compound is $50J/k{g}^{\circ }C$.

1. $5000J$
2. $50,000J$
3. $0.5kJ$
4. $50,000kJ$

Q. An iron block of mass $1kg$ is heated to $300{}^{\circ }C$. If it is immersed in $1kg$ of water at $30{}^{\circ }C$, then what will be the change in temperature of water (in ${}^{\circ }C)$?
$[$specific heat capacity of iron : $460Jk{g}^{-1}{K}^{-1}$, water: $4200Jk{g}^{-1}{K}^{-1}]$

1. $29{}^{\circ }C$
2. $26.65{}^{\circ }C$
3. $243.35{}^{\circ }C$
4. $23.65{}^{\circ }C$

Q.

A liquid of mass $m$ and specific heat $c$ is at a temperature $2T$. Another liquid of mass $m/2$ and specific heat $2c$ is at a temperature $T$. If these two liquids are mixed, the resulting temperature of the mixture is:

1. $\left(\frac{8}{5}\right)T$

2. $\left(\frac{3}{5}\right)T$

3. $\left(\frac{3}{2}\right)T$

4. $\left(\frac{2}{3}\right)T$

Q. Which among the following can be used as a coolant in cars?

1. Kerosene oil
2. Alcohol
3. Coconut oil
4. Water

Q. Land gets heated up easily than the sea during the daytime because the specific heat capacity of the land is _____ than that of the sea.

1. same
2. unrelated to
3. less
4. more

Q. A wooden piece piece gets heated easily compared to an iron piece. Consider the mass of both the substances are equal.

1. True
2. False

Q.

Water is used to cool radiators of engines because it has a high specific heat capacity.

1. True

2. False

Q. One calorie is equal to .

1. $\text{4.5 J}$
2. $\text{4.184 J}$
3. $\text{5 J}$

Q.

The thermal capacity will _______ if we make the base of the cooking pan thick.

1. increase

2. decrease

3. remains unchanged

4. first increase and then decrease