On a day when I am in hurry to go to office, I have a fixed quantity of rice which was just cooked and kept in a bowl. In order to cool it quickly, which one of the following is the best option?

Which one of the following is the correct relation between Celsius (C) and Fahrenheit (F)?

Which one of the following changes occurs when salt is added into the water?

In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?

Which one of the following statements best defines the concept of heat ?

Which one of the following heat transfers is an example of convection ?