Statement 1: Oxidation and reduction occur together.
Statement 2: In redox reactions, electrons must be gained and lost.

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

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Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.

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Statement 1 is correct but Statement 2 is not correct.

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Statement 1 is not correct but Statement 2 is correct.

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Both the Statement 1 and Statement 2 are not correct.

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Solution

The correct option is A
Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

Statement 1: Oxidation and reduction occur together.
Statement 2: In redox reactions, electrons must be gained and lost.
Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.
Note: In redox reaction, one substance loses an electron and is oxidized and the lost electrons are gained by other substance which is reduced.
$2 N a \to 2 N a^{+} + 2 e^{-}$
$C l_{2} + 2 E^{-} \to 2 C l^{-}$
$2 N a + C l_{2} \to 2 N a C l$
In the above reaction, sodium is oxidized as it looses electrons and chlorine is reduced as it gains electrons.

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Statement 1: Oxidation and reduction occur together. Statement 2: In redox reactions, electrons must be gained and lost.

Statement 1: Oxidation and reduction occur together.
Statement 2: In redox reactions, electrons must be gained and lost.