Question

What are the possible questions that can be asked for maths half yearly exam for class 9.

Answer 1

Answer:

Mid-point theorem

Step-by-step explanation:

Answer 2

Mention two uses of isotopes in the field of medicine.

Who discovered vaccine for the first time?
Why do fish go in deep waters during day light?

a) Name two properties of a substance to check its purity?

(b) Alloys cannot be separated by physical means, though it is considered mixture, Why?

these all I know .... cause my sis is in 9