The difference between a spring balance and in ordinary balance in which there are two pans are:
Cutting is easy with the sharp end of a knife. It is due to:
We cannot lift up a chair while sitting on it. The reason for this is:
The chemical name of baking soda is
Soap is used for washing clothes. Why ?
The mass of a body is 48 kilogram on earth. What is its mass in moon ?
