1.

(A): When a bottle of cold carbonated drink is opened, a slight fog forms around the opening. (R ): Adiabatic expansion of the gas causes lowering of temperature and condensation of water vapours.

Answer»

Both (A) and(R ) are TRUE and (R ) is the CORRECT EXPLANATION of (A)
Both (A) and (R ) are (R ) true and is not the correct explanation of (A)
(A) is true but (R ) is false
Both (A) and (R ) are false

Answer :A


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