1.

Statement I :Limestone decomposes when it is heated in air . Statement II : Increase in the content of CO_(2) in the atmosphere in recent years is mainly due to the using of limestone in the manufacture of cement.

Answer»

Both the STATEMENTS are individually true and STATEMENT II is the CORRECT explanation of Statement I
Both the statements are individually true but Statement II is not correct explanation of Statement I
Statement I is true and Statement II is FALSE
Statement I is false but Statement II is true

Answer :C


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