1.

(A) H_(3)PO_(3) is tribasic acid (R )Three H atoms are directly attached to P atom in a H_(3)PO_(3) molecule.

Answer»

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

ANSWER :4


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