Ice ⇄ bawater ⇄dc water vapori) ‘a’ is a physical changeii) Process ‘d’ is called condensationiii) Process ‘b’ is a chemical changeiv) All Ice, water, and water vapor are made up of H2O molecules only.

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$I c e ⇄_{b}^{a} w a t e r ⇄_{d}^{c}$ water vapor

i) ‘a’ is a physical change

ii) Process ‘d’ is called condensation

iii) Process ‘b’ is a chemical change

iv) All Ice, water, and water vapor are made up of $H_{2} O$ molecules only.

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All are wrong

Only i, ii and iv are correct

Only iii is correct are correct

All are correct

answer is C.

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Detailed Solution

The correct observation for the following reaction is

$I c e ⇄_{b}^{a} w a t e r ⇄_{d}^{c}$ water vapor

i) ‘a’ is a physical change

ii) Process ‘d’ is called condensation

iv) All Ice, water, and water vapor are made up of $H_{2} O$ molecules only.

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