Classify the types of force based on their application.

State Snell’s law.

What is co-efficient of cubical expansion?

What happens to the resistance, as the conductor is made thicker?

What is a longitudinal wave?

Which radioactive material is present in the ore of pitchblende?

Write the different types of isotopes of oxygen and its percentage abundance.

A is a reddish brown metal, which combines with O₂ at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B and C with reaction.

What is mean by binary solution?

Why does the reaction rate of a reaction increase on raising the temperature?

Classify the following compounds based on the pattern of carbon chain and give their structural formula:
(i) Propane
(ii) Benzene
(iii) Cyclobutane
(iv) Furan

What is collateral vascular bundle?

How does leech respire?

What is the shape of RBC in human blood?

Name the parts of the hind brain.