1. Different gases have the same rate of expansion for the same rise in temperature.   True   False   2. The heat supplied by a bunsen-burner flame on burning 2 m3 of gas which has a calorific value of 25000 J/m3 is   50.0 kJ   50000kJ   12500.0 kJ   12.5 kJ   Hint Half-n-half Clue   3. The calorific value of a fuel is the quantity of heat produced when a unit _______ of it is burnt.   volume   mass   weight   Half-n-half Clue   4. Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, what will be the final temperature when 20.0 calories of heat are added to 2 g of water at 22oC ?   12.0oC   32.0oC   19.6oC   24.4oC   Half-n-half Clue   5. A mass of 30 kg falls 80m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is   294 J   2400 J   23520 J   784 J   Half-n-half Clue   6. The heat produced on burning 5 kg of fuel oil which has a calorific value of 39800 kJ/kg is   7960.0 MJ   8.0 MJ   199.0 MJ   199000 MJ   Half-n-half Clue   7. Which loses the most heat in cooling to 10oC ?   a glass filled with boiling water   a kettle filled with water at 60oC   a swimming pool filled with water at 30oC   Half-n-half Clue