P-2 Animal Classification — Science STD 10 — Question

Which defect of vision can be rectified:
By using a concave lens?

How many electrons are there in the valence shell of (i) a magnesium atom, and (ii) an oxygen atom?

Name the types of wires or cables used in the electric power supply provided by the State Electricity Board for houses and factories.

Name two metals which can displace hydrogen from dilute acids.

State the relation between the kilocalorie and the calorie.

The power of a lens is, -2D. What is its focal length?

Name one animal and one plant whose stings contain formic acid (or methanoic acid).

Which part of roots is involved in the exchange of respiratory gases?

Rainbow is a beautiful natural phenomenon. It is the combined effect of a natural three processes together produced by light. Write it into the circle.

Find the odd one out: Lion tailed monkey, White rats, Musk deer, Tiger