Embibe Experts Solutions for Chapter: Thermal Properties of Matter, Exercise 2: Level 2

The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point. The melting point of a solid is an indication of

Consider the following three statements.

I. Heating $1 \mathrm{kg}$ of water from $10°\mathrm{C}$ to $50°\mathrm{C}$

II. Melting $600 \mathrm{g}$ of ice at $0°\mathrm{C}$.

III. Converting $300 \mathrm{g}$ of ice at $0°\mathrm{C}$ to water at $50°\mathrm{C}$.

Which one of the following shows the correct arrangement of the quantity of heat required in the above process in increasing order of magnitude? Choose the correct answer from the codes given below.

In a steel factory it is found that to maintain $M \mathrm{kg}$ of iron in the molten state at its melting point an input power $P$ watt is required. When the power source is turned off, the sample completely solidifies in time $t$ second. The latent heat of fusion of iron is

A quality of a thermometer is that its heat capacity should be small. If $P$ is mercury thermometer, $Q$ is resistance thermometer and $R$ thermocouple type then

The steel petrol tank of a car is filled with $30$ litres of petrol at $10°\mathrm{C}$. If ${\alpha }_{\mathrm{steel}}$ is $24\times {10}^{-6} °{\mathrm{C}}^{-1}$ and ${\gamma }_{\mathrm{petrol}}$ is $9.9\times {10}^{-4} {}^{\circ }\mathrm{C}^{-1}$, the overflow of petrol at $40°\mathrm{C}$ is,

The densities of wood and benzene at $0°\mathrm{C}$ are $880 \mathrm{kg} {\mathrm{m}}^{-3}$ and $900 \mathrm{kg} {\mathrm{m}}^{-3}$, respectively. The coefficients of volume expansion are $1.2\times {10}^{-3} °{\mathrm{C}}^{-1}$ for wood and $1.5\times {10}^{-3} °{\mathrm{C}}^{-1}$ for benzene. At what temperature will a piece of wood just sink in benzene?

Volume expansion coefficient of a gas at constant pressure equal to:

An ideal gas is expanding such that $PT=$ constant. The coefficient of volume expansion of the gas is