Question

2. Which of the following is not a heterogeneous matter?
Rock
b. Smoke
Cement
d. Clean air​

Answer 1

Answer:

d clean air

Explanation:

because heterogenous mixture is a which mixture which the composition is not a uniform throughout it consists two or more phases.

Answer 2

Answer:

air ,brass , solution of sugar in water are hemogeneous mixture and smoke is heterogeneous mixture.

Explanation:

Hope it may help you..