- 1(current)
Q. No.Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at \(100~^{\circ}\text{C},\) while the other one is at \(0~^{\circ}\text{C}.\) If the two bodies are brought into contact, then assuming no heat loss, the final common temperature is:
| 1. | \(50~^{\circ}\text{C}\) |
| 2. | more than \(50~^{\circ}\text{C}\) |
| 3. | less than \(50~^{\circ}\text{C}\) but greater than \(0~^{\circ}\text{C}\) |
| 4. | \(0~^{\circ}\text{C}\) |
Subtopic: Â Calorimetry |
 64%
Level 2: 60%+
NEET - 2016
Hints
A piece of ice falls from a height \(h\) so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice. The value of \(h\) is:
(Latent heat of ice is \(3.4 \times 10^5~\text{J/kg}\) and \(g=10~\text{N/kg}\))
(Latent heat of ice is \(3.4 \times 10^5~\text{J/kg}\) and \(g=10~\text{N/kg}\))
| 1. | \(544~\text{km}\) | 2. | \(136~\text{km}\) |
| 3. | \(68~\text{km}\) | 4. | \(34~\text{km}\) |
Subtopic: Â Calorimetry |
 83%
Level 1: 80%+
NEET - 2016
Hints
Links
Steam at \(100~^{\circ}\text{C}\) is passed into \(20~\text{g}\) of water at \(10~^{\circ}\text{C}.\) When water acquires a temperature of \(80~^{\circ}\text{C},\) the mass of water present will be:
[Take specific heat of water \(= 1~\text{cal g}^{-1}~^\circ\text{C}^{-1}\) and latent heat of steam \(= 540~\text{cal g}^{-1}\)]
[Take specific heat of water \(= 1~\text{cal g}^{-1}~^\circ\text{C}^{-1}\) and latent heat of steam \(= 540~\text{cal g}^{-1}\)]
| 1. | \(24~\text{g}\) | 2. | \(31.5~\text{g}\) |
| 3. | \(42.5~\text{g}\) | 4. | \(22.5~\text{g}\) |
Subtopic: Â Calorimetry |
 73%
Level 2: 60%+
AIPMT - 2014
Hints
Liquid oxygen at \(50~\text K\) is heated up to \(300~\text K\) at a constant pressure of \(1~\text{atm}.\) The rate of heating is constant. Which one of the following graphs represents the variation of temperature with time?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Calorimetry |
 82%
Level 1: 80%+
AIPMT - 2012
Hints
Links
- 1(current)
Q. No.
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