4. An alloy among the following is
(a) copper
(b) iron
(d) steel
( nickel
The process of crystallisation is not applicable in
(a) obtaining salt from sea
(c) formation of snow flakes
(b) obtaining sugar crystals from its solution
(d) rusting of iron
Magnesium produces _______ when burnt in air
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Answer:
copper and Rusting of iron is correct answer please mark has brainlist answer
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