The Kelvin Scale

Q. How does the melting point of ice change with a change in atmospheric pressure?

1. Increases with increasing pressure

2. Decreases with increasing pressure

3. Is independent of atmospheric pressure

4. Increases with decreasing pressure

Q. A graph for an ideal gas at constant volume is plotted by taking pressure along y - axis and centigrade temperature along x - axis as shown in the figure below. Find the x intercept of the graph.

1. $-273.15{}^{\circ }\text{C}$
2. $-273.15\text{K}$
3. $-273{}^{\circ }\text{C}$
4. $-273\text{K}$

Q.

At normal temperature and pressure conditions, water boils at ${100}^{\circ }C$. Deep down the mine, at what temperature will the water boil?

1. At ${100}^{\circ }C$

2. Greater than ${100}^{\circ }C$

3. Less than ${100}^{\circ }C$

4. Water will not boil