What are polaroids? Mention some of their practical uses.

What is a polaroid?

What are fibre optics? Mention some of their applications?

What are phospholipids? Mention their importance.

What are polaroids? Explain their one use.

What are conservattion and non-conservation forces? Explain with examples. Mention some of their properties.

Mention two uses of air?

Mention two uses of air?

What are Polaroids? State their four applications.

What are interferons? Mention their role.