Question

multiple choice question
8. Rusting-
a. Is a chemical change
b. Is more common in coastal areas
c. Involves the formation of iron sulphate d. Both a, and b.
9. In making of alloys -
a. More than two metals are mixed
b. Only two metals are mixed
c. Two or more metals are mixed in a fixed ratio
d.
None of these​

Answer 1

8.both a and b
9.(c)two or more metals are mixed in a fixed ratio

Answer 2

Answer:

option a in question no 8

Explanation:

Rusting is an example of a chemical change. A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical property of iron is that it is capable of combining with oxygen to form iron oxide, the chemical name of rust.