Motion — Science STD 9 — Question

The rusting of an iron object is called:

Living organisms vary widely in size. However, even the largest organisms such as the giant redwood and the blue whale have cells that are roughly the same size as those in smaller organisms. Why are all cells small?

The law of gravitation gives the gravitational force between:

1. The earth and a point mass only.
2. The earth and the sun only.
3. Any two bodies having some mass.
4. Any two charged bodies only.

Four forces are acting on a body. If the body doesn't change its position or shape, the forces:

When we pay for our electricity bill, we are paying for the:

Which of the following actions can be grouped as pull: Moving a loaded cart. Applying brakes while driving car. Drawing a bucket of water from a well

Which of the following elements has the same molecular mass as its atomic mass?

1. Nitrogen.
2. Neon.
3. Oxygen.
4. Chlorine.

Which type of tissue forms the inner lining of a blood vessel?

Which of the following is not correct about evaporation?

The conversion of a solid into vapours without passing through the liquid state is called: