141. Which one of the following takes place when water transforms from liquid to gaseous phase?
142. Which fuel has the highest calorific value from among the following?
Fuel | Calorific Value (kJ /kg) |
Diesel | 44800 |
Hydrogen | 141790 |
Coal | 26000 |
Petrol | 48000 |
144. Select the correct statement from among the following.