Question

(1) there are 98 elements obtained naturally [True/False]

(2)Male have XY pair of sex chromosomes [True/False]

(3)when Ray of light enters from optically denser medium to denser medium in bends towards the normal. [True/False]

(4) Sun and stars are sources of energy because of nuclear fusion reaction on its surface.
[True/False]​

Answer 1

• True
• True
• False
• True

hope it will helps you

Answer 2

Explanation:

1. true

2. true

3. true

4. false

please mark as brilliant