Keeping Time with the Skies — Science STD 8 — Question

A group of cats are found in a forest that interbreed freely. What is the term used for them ?

Indicate whether the following statements are True or False. Also write the false statements in their correct form.Carbon dioxide is an excellent fire extinguisher.

Is there any relation between pressure and force ?

Two tiny holes are made in a plastic bucket, one near the middle part and the other just above bottom when this bucket is filled with water, the water rushes out from the bottom hole much faster than from the upper hole. What conclusion do you get from this observation?

Which gas is formed when sulphur reacts with oxygen?

What is the role of microorganisms in the production of biogas?

What type of plants can fix nitrogen gas of the air into compounds of nitrogen?

Give two examples of each. Rabi crop.

Why do we always see the same side of the Moon?

Why is it easy to cut the fruit with sharp knife as compared to blunt knife ?