The Fundamental Unit of Life — Science STD 9 — Question

You are provided with a mixture of petroleum and water. You can separate this mixture by_____?

Universal gravitational constant is:

If 32g of sulphur has x atoms, then the number of atoms in 32g of oxygen will be:

A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case:

1. Sound will be louder but pitch will not be different.
2. Sound will be louder and the pitch will also be higher.
3. Sound will be luder but pitch will be lower.
4. Both loudness and pitch will remain unaffected.

If a displacement-time graph of an object is a straight line parallel to the time axis, the object is:

Identify the organelle present only in animal cells:

Solar radiation heat-up:

1. Land faster than the water bodies.
2. Land slower than the water bodies.
3. Equally both land and water bodies.
4. Neither land nor water bodies.

A ball is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy when its reaches the maximum height?

Which one of the following species of honey bee is an Italian species?

1. Apis Mellifera.
2. Apis Dorsata.
3. Apis florae.
4. Apis Cerana Indica.

Which of the following could not be a unit of acceleration?

1. km/s²
2. cms^-2
3. km/s
4. m/s²