Earth is an open system regarding matt...

Earth is an open system regarding matter.

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In an open system

there will be on exchange of both matter and energy

there will be no exchange of both matter and energy

there will be exchange of energy only

there will be on exchange of matter only

It results in appearance of partial charges on the carbon atoms.

It is a temporary effect.

It operates on multiple bonds.

It requires an attacking reagent.

At absolute zero of temperature, the entropy of perfectly crystalline substance is +ve.

At absolute zero of temp. entropy of perfectly crystalline substance is taken to be zero.

At `0^@C` the entropy of a perfectly crystalline substance is taken to be zero

At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero.