Atoms and Molecules — Science STD 9 — Question

A group of similar cells with the same functions and origin is called ___________?

What is potential energy?

Which of the following class of forces is different from others?

If the mass of a body is M on the surfrace of the earth, then its mass on the surface of the moon will be:

The material which is added to water during purification process at the water works so as to disinfect it is:

1. Potassium permanganate.
2. Betadine.
3. Chlorine.
4. Potash alum.

All matter is made of:

Which of the following poultry bird lays maximum number of eggs?

1. ILS-82
2. B-77
3. HH-260
4. IBL-80

Which one of the following is the fastest growing carp?

During summer, water kept in an earthen pot becomes cool because of the phenomenon of:

A stone tied to a string is whirled in a circle. As it is revolving, the rope suddenly breaks.Then: