Calorimetry
PHXI11:THERMAL PROPERTIES OF MATTER

366299 The specific heat of a substance varies with temperature \(T\left( {^\circ C} \right)\) as \(c = 0.20 + 0.14T + 0.023{T^2}\left( {cal/g/\,^\circ C} \right)\). The heat required to raise the temperature of \(2\;g\) of substance from \(5^\circ C\) to \(15^\circ C\) will be

1 \(82\,cal\)
2 \(56\,cal\)
3 \(100\,cal\)
4 \(24\,cal\)
PHXI11:THERMAL PROPERTIES OF MATTER

366300 Water is used to cool radiators of engines, because

1 It is easily available
2 Of its lower density
3 It has high specific heat
4 It is cheap
PHXI11:THERMAL PROPERTIES OF MATTER

366301 Two spheres \(A\) and \(B\) have diameters in the ratio \(1: 2\), densities in the ratio \(2: 1\) and specific heats in the ratio \(1: 3\). Find the ratio of their thermal capacities

1 \(1: 4\)
2 \(1: 6\)
3 \(1: 12\)
4 \(1: 3\)
PHXI11:THERMAL PROPERTIES OF MATTER

366302 If earth suddenly stops rotating about its own axis, the increase in it's temperature will be:

1 \(\dfrac{R^{2} \omega^{2}}{5 J_{S}}\)
2 \(\dfrac{R^{2} \omega^{2}}{J_{S}}\)
3 \(\dfrac{R m \omega^{2}}{5 J_{S}}\)
4 None of these
PHXI11:THERMAL PROPERTIES OF MATTER

366299 The specific heat of a substance varies with temperature \(T\left( {^\circ C} \right)\) as \(c = 0.20 + 0.14T + 0.023{T^2}\left( {cal/g/\,^\circ C} \right)\). The heat required to raise the temperature of \(2\;g\) of substance from \(5^\circ C\) to \(15^\circ C\) will be

1 \(82\,cal\)
2 \(56\,cal\)
3 \(100\,cal\)
4 \(24\,cal\)
PHXI11:THERMAL PROPERTIES OF MATTER

366300 Water is used to cool radiators of engines, because

1 It is easily available
2 Of its lower density
3 It has high specific heat
4 It is cheap
PHXI11:THERMAL PROPERTIES OF MATTER

366301 Two spheres \(A\) and \(B\) have diameters in the ratio \(1: 2\), densities in the ratio \(2: 1\) and specific heats in the ratio \(1: 3\). Find the ratio of their thermal capacities

1 \(1: 4\)
2 \(1: 6\)
3 \(1: 12\)
4 \(1: 3\)
PHXI11:THERMAL PROPERTIES OF MATTER

366302 If earth suddenly stops rotating about its own axis, the increase in it's temperature will be:

1 \(\dfrac{R^{2} \omega^{2}}{5 J_{S}}\)
2 \(\dfrac{R^{2} \omega^{2}}{J_{S}}\)
3 \(\dfrac{R m \omega^{2}}{5 J_{S}}\)
4 None of these
PHXI11:THERMAL PROPERTIES OF MATTER

366299 The specific heat of a substance varies with temperature \(T\left( {^\circ C} \right)\) as \(c = 0.20 + 0.14T + 0.023{T^2}\left( {cal/g/\,^\circ C} \right)\). The heat required to raise the temperature of \(2\;g\) of substance from \(5^\circ C\) to \(15^\circ C\) will be

1 \(82\,cal\)
2 \(56\,cal\)
3 \(100\,cal\)
4 \(24\,cal\)
PHXI11:THERMAL PROPERTIES OF MATTER

366300 Water is used to cool radiators of engines, because

1 It is easily available
2 Of its lower density
3 It has high specific heat
4 It is cheap
PHXI11:THERMAL PROPERTIES OF MATTER

366301 Two spheres \(A\) and \(B\) have diameters in the ratio \(1: 2\), densities in the ratio \(2: 1\) and specific heats in the ratio \(1: 3\). Find the ratio of their thermal capacities

1 \(1: 4\)
2 \(1: 6\)
3 \(1: 12\)
4 \(1: 3\)
PHXI11:THERMAL PROPERTIES OF MATTER

366302 If earth suddenly stops rotating about its own axis, the increase in it's temperature will be:

1 \(\dfrac{R^{2} \omega^{2}}{5 J_{S}}\)
2 \(\dfrac{R^{2} \omega^{2}}{J_{S}}\)
3 \(\dfrac{R m \omega^{2}}{5 J_{S}}\)
4 None of these
PHXI11:THERMAL PROPERTIES OF MATTER

366299 The specific heat of a substance varies with temperature \(T\left( {^\circ C} \right)\) as \(c = 0.20 + 0.14T + 0.023{T^2}\left( {cal/g/\,^\circ C} \right)\). The heat required to raise the temperature of \(2\;g\) of substance from \(5^\circ C\) to \(15^\circ C\) will be

1 \(82\,cal\)
2 \(56\,cal\)
3 \(100\,cal\)
4 \(24\,cal\)
PHXI11:THERMAL PROPERTIES OF MATTER

366300 Water is used to cool radiators of engines, because

1 It is easily available
2 Of its lower density
3 It has high specific heat
4 It is cheap
PHXI11:THERMAL PROPERTIES OF MATTER

366301 Two spheres \(A\) and \(B\) have diameters in the ratio \(1: 2\), densities in the ratio \(2: 1\) and specific heats in the ratio \(1: 3\). Find the ratio of their thermal capacities

1 \(1: 4\)
2 \(1: 6\)
3 \(1: 12\)
4 \(1: 3\)
PHXI11:THERMAL PROPERTIES OF MATTER

366302 If earth suddenly stops rotating about its own axis, the increase in it's temperature will be:

1 \(\dfrac{R^{2} \omega^{2}}{5 J_{S}}\)
2 \(\dfrac{R^{2} \omega^{2}}{J_{S}}\)
3 \(\dfrac{R m \omega^{2}}{5 J_{S}}\)
4 None of these