1. _______ have the highest calorific value.   Sugars   Vitamins   Carbohydrates   Proteins   Fats   Hint Half-n-half Clue   2. Liquids exhibit only _______ expansion.   linear   cubical   superficial   Half-n-half Clue   3. Which is the 'odd one out'?   Erg   Joule   Calorie   Watt   Half-n-half Clue   4. The heat produced on burning 10 kg of fuel oil which has a calorific value of 39800 kJ/kg is   398.0 MJ   3980.0 MJ   4.0 MJ   398000 MJ   Half-n-half Clue   5. If the temperature of a body is _______ that of its surroundings, it will lose heat to its surroundings.   lower than   higher than   equal to   Half-n-half Clue   6. A mass of 30 kg falls 100m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is   3000 J   294 J   29400 J   980 J   Half-n-half Clue   7. Heat is a form of _______.   expansion   energy   electricity   Half-n-half Clue