Question

(i) Water droplets are seen on the outer surface of a cold drink bottle.
(ii) The colour of iodine disappears in the reaction between vegetable oil
and iodine.
(iii) The bottom of a pond appears raised.​

Answer 1

Explanation:

when bottle is kept in fridge it is habituated to cold temperature

when bottle is taken out temperature of surrounding also decreases

so water vapour gets unsaturated and forms water droplets

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Answer 2

water droplets are seen on the surface of a cold drink bottle because when water vapour present in air came in contact with cold drink bottle, it losses is energy which result it in the formation of water droplets

Explanation:

the bottom of the pond is appears to be raised because of the the refraction of light

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