SCIENCE 15 MCQ

Chemistry and Physics Quiz

1. In H₂O₂, what is the oxidation state of oxygen?

a) -1

b) -2

c) -3

d) -1/2

2. F-block elements are related to which series?

a) Sharp series

b) S-character series

c) Actinide series

d) Sharp series

3. In CrO₃, what is the oxidation state of Cr?

a) +6

b) +4

c) -6

d) +12

4. Which of the following is a greenhouse gas?

a) Argon

b) Nitric oxide

c) Dinitrogen

d) Greenhouse gas is not present

5. 8 kg of dye is dissolved in 4 m³ of water, what is the concentration?

a) 2

b) 64

c) 32

d) 4