Science, asked by athoibongte123, 1 day ago

science class 7
tick the correct
(a) Crystallisation is a physical/chemical change.
(b) Salty water slows down/speeds up the process of rusting.
(c) Coating iron objects with oil/water prevents rusting.
(d) Rusting makes iron objects weak/strong.

Answers

Answered by lgarundhathi

0

Answer:

Explanation:

a) physical

b)speeds up

c)oil

d)weak

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