IIT-JEE Exam

Extraction of zinc from zinc blende is achieved by
(A) electrolytic reduction (B) roasting followed by reduction with carbon
(C) roasting followed by reduction with another metal (D) roasting followed by self-reduction

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IIT-JEE Other Question
The percentage of p-character in the orbitals forming P−P bonds in P4 is
(A) 25 (B) 33
(C) 50 (D) 75 STATEMENT-1: p-Hydroxybenzoic acid has a lower boiling point than o-hydroxybenzoic acid.
because
STATEMENT-2: o-Hydroxybenzoic acid has intramolecular hydrogen bonding.
(A) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
(B) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
(C) Statement-1 is True, Statement -2 is False.
(D) Statement-1 is False, Statement-2 is True