Force and Laws of Motion — Science STD 9 — Question

How many neutrons are present in the nucleus hydrogen atom?

Major component of the atmosphere on Venus and Mars planet is:

1. Carbon dioxide.
2. Oxygen.
3. Nitrogen.
4. Water vapours.

Layers continue to produce eggs upto:

Exotic breed of poultry bird having high egg laying capacity is:

The number of lenses in compound light microscope is:

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.

Law of definite proportions was given by:

______ of the body is a measure of inertia.

The force of attraction between two unit point masses separated by a unit distance is called:

In water, the proportion of oxygen and hydrogen by mass is:

1. 1 : 4
2. 1 : 8
3. 4 : 1
4. 8 : 1