Please provide me solve question paper for IIT JEE chemistry.

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The reaction of P4 with X leads selectively to P4O6. The X is

(A) Dry O2
(B) A mixture of O2 and N2
(C) Moist O2
(D) O2 in the presence of aqueous NaOH

Sol. (B)
P4 + 3O2 2 N → P4O6 (exclusively)
(N2 is used to retard the further oxidation.)

Among cellulose, poly (vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest is
(A) Nylon
(B) Poly(vinyl chloride)
(C) Cellulose
(D) Natural Rubber

Sol. (D)
As chain of natural rubber involves weak van der Waal force of interaction.

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