The S.I. unit of temperature is :

1. Pascal
2. °C
3. Kelvin
4. °F

'The volume of a given amount of a gas is directly proportional to its absolute temperature at a constant pressure' is the statement of :

1. Gay-Lussac's law
2. Boyle's law
3. Charles' law
4. Mendeleev's law

The volume of a given mass of a gas at constant temperature and 10 atmospheric pressure is 10 litres. Its volume at 5 atmospheres will be :

1. 5 litres
2. 10 litres
3. 15 litres
4. 20 litres

Which of the following temperatures is known as the steam point ?

1. 273 K
2. 373 K
3. 290 K
4. 273°C