$2.4 \mathrm{~g}$ coal is burnt in a bomb calorimeter in excess of oxygen at $298 \mathrm{~K}$ and $1 \mathrm{~atm}$ pressure. The temperature of the calorimeter rises from to . The enthalpy change during the combustion of coal is . The value of is ___________. (Nearest Integer)

The number of endothermic process/es from the following is ______________.

A. $\mathrm{I}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{I}(\mathrm{g})$

Standard enthalpy of vapourisation for $\mathrm{CCl}_4$ is $30.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Heat required for vapourisation of of at constant temperature is ________ .

Consider the following data

Heat of combustion of $\mathrm{H}_{2}(\mathrm{g})\quad=-241.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$

For the reaction

$\mathrm{H}_{2} \mathrm{F}_{2}(\mathrm{~g}) \rightarrow \mathrm{H}_{2}(\mathrm{~g})+\mathrm{F}_{2}(\mathrm{~g})$

The molar heat capacity for an ideal gas at constant pressure is $20.785 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$. The change in internal energy is upon heating it from to . The number of moles of the gas at constant volume is ____________. [Nearest integer] (Given: )

Solid fuel used in rocket is a mixture of $\mathrm{Fe}_{2} \mathrm{O}_{3}$ and (in ratio 1 : 2). The heat evolved per gram of the mixture is ____________. (Nearest integer)

For combustion of one mole of magnesium in an open container at 300 K and 1 bar pressure, $\Delta$_CH^$\Theta$ = $-$601.70 kJ mol, the magnitude of change in internal energy for the reaction is __________ kJ. (Nearest integer)

An athlete is given 100 g of glucose (C$_6$H$_{12}$O) for energy. This is equivalent to 1800kJ of energy. The 50% of this energy gained is utilized by the athlete for sports activities at the event. In order to avoid storage of energy, the weight of extra water he would need to perspire is ____________ g (Nearest integer)

For complete combustion of methanol

CH₃OH(I) + ${3 \over 2}$O₂(g) + 2HO(I)

The enthalpy of combustion of propane, graphite and dihydrogen at $298 \mathrm{~K}$ are $-2220.0 \mathrm{~kJ} \mathrm{~mol}^{-1},-393.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$ and respectively. The magnitude of enthalpy of formation of propane is _______________ . (Nearest integer)

2.2 g of nitrous oxide (N₂O) gas is cooled at a constant pressure of 1 atm from 310 K to 270 K causing the compression of the gas from 217.1 mL to 167.75 mL. The change in internal energy of the process, $\Delta$U is '$-$x' J. The value of 'x' is ________. [nearest integer]

(Given : atomic mass of N = 14 g mol^$-$1 and of O = 16 g mol. Molar heat capacity of NO is 100 J K mol)