Force and Laws of Motion — Science STD 9 — Question

The common characteristic of suspension and colloidal solution is:

One of the following can hear infrasound. This one is:

1. Dog.
2. Bat.
3. Rhinoceros.
4. Humans.

Which of the following statements is/are true about matter:

Nif genes occur in:

1. Rhizobium.
2. Streptococcus.
3. Penicillium.
4. Aspergillus.

The cell organelle involved in forming complex sugars from simple sugars are:

Which of the following does has kinetic energy?

Two bodies of equal weight are kept at heights of h and 1.5 A, respectively. The ratio of their PE is:

Which of the following is not a property of a molecule?

In addition to the cell membrane, there is an outer thick layer in cells of plants called as:

An apple of mass 100g falls from a tree because of gravitational attraction between the earth and the apple. If the magnitude of force exerted by the earth on the apple be F₁, and the magnitude of force exerted by the apple on the earth be F₂, then:

1. F₁ is very much greater than F₂
2. F₂ is very much greater than F₁
3. F₁ is only a little greater than F₂
4. F₁ and F₂ are exactly equal.