1.

Assertion A: The position of hydrogen in modern periodic table is a matter of controversy. Reason R: The properties of hydrogen resembles with the properties of alkali metals and halogens.

Answer»

Assertion A and REASON R are true, and reason R is the CORRECT EXPLANATION of assertion A.
Assertion A and reason R are true, but reason R is not the correct explanation of assertion A.
Assertion A is CORRET but reason R is FALSE.
Assertion A is false but reason R is true.

Answer :A


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