Question

9. Which of the following is a heterogeneous mixture?
A. Air
B. Oil in water
C. Stainless steel
D. Soft drink
10. What is/are true for substance and mixture?
l. Pure substance melts completely.
II. Pure substance has a varying boiling point.
III. Mixture does not melt completely.
IV. Mixture has a fixed boiling point.
A. I and II only
B. I and III only
C. II and IV only
D. I and IV only​

Answer 1

Answer:

9) B

10) B

Explanation:

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Answer 2

Answer:

Option A Air is right answer for question 1st

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