Improvement in Food Resources — Science STD 9 — Question

Conversion of a liquid into vapour form at any temperature below its boiling point is called as ______________?

In a compound, the ratio of the atoms or element by mass remains always the same irrespective of:

Why does the boiling point of water decrease at higher altitudes?

Choose the correct statement(s):

Which of the following is unit of power?

Which of the following statement is correct about the atom of and element?

1. An atom can have only protons and neutrons but no electrons.
2. An atom can have only electrons ad neutrons but no protons.
3. An atom can have only electron and proton but o neutron.
4. an atom must always have a proton, neutron and electron.

Pusa Lerma is an improved variety of:

1. Rice
2. Wheat
3. Maize
4. Soybean

Filtration as a method of separation can be used for mixtures that are:

One of the following is not a vector quantity. This one is:

1. Displacement.
2. Speed.
3. Acceleration.
4. Velocity.

A bus begin to move with an acceleration of 1m/s². A man who is 48m behind the bus starts running at 10m/s to catch the bus. The man will be able to catch the bus after.