Steam at $$100~^{\circ}\mathrm{C}$$ is passed into $$20~\text{g}$$ of water at $$10~^{\circ}\mathrm{C}$$. When water acquires a temperature of $$80~^{\circ}\mathrm{C}$$, the mass of water present will be:
[Take specific heat of water $$= 1~\text{cal g}^{-1}~^\circ\mathrm{C}^{-1}$$ 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:  Calorimetry |
69%
From NCERT
AIPMT - 2014
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Liquid oxygen at $$50$$ K is heated up to $$300$$ K at a constant pressure of $$1$$ 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:  Calorimetry |
80%
From NCERT
AIPMT - 2012
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If the cold junction of a thermocouple is kept at 0 °C and the hot junction is kept at T °C, then the relation between neutral temperature (${\mathrm{T}}_{\mathrm{n}}$) and temperature of inversion (${\mathrm{T}}_{\mathrm{i}}$) is:

1. ${\mathrm{T}}_{\mathrm{n}}=\frac{{\mathrm{T}}_{\mathrm{i}}}{2}$

2. ${\mathrm{T}}_{\mathrm{n}}$= 2${\mathrm{T}}_{\mathrm{i}}$

3. ${\mathrm{T}}_{\mathrm{n}}$${\mathrm{T}}_{\mathrm{i}}$ - T

4. ${\mathrm{T}}_{\mathrm{n}}$= ${\mathrm{T}}_{\mathrm{i}}$ + T

Subtopic:  Calorimetry |
AIPMT - 2007
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