This question is from Hindi class 9 Kshitij ch- sakhiya aur sabad . answer this question if you know the answer properly .don't write irrelevant answer .
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6. Give reasons for the following:
(a) Aluminium foils are used to wrap food items.
(b) Immersion rods for heating liquids are made
up of metallic substances.
(c) Copper cannot displace zinc from its salt so-
lution.
(d) Sodium and potassium are stored in kerosene.
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