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Questions

Physics

A vessel ‘A’ with a capacity of V₁ = 3lt. contains gas at a pressure of P₁ = 2 atom and a vessel B with a capacity of V₂ = 4 lt. contains the same gas at a pressure of 1 atom. The temp. is 0° C in A and 27°C in B.What will be the pressure in the vessels if they are connected by a tube.

Chemistry

Hybridization of P in PO₄^- is same as in
(a) S in SO₃(b) N in NO₃^-
(c) I in Icl₂⁺
(d) P in PCl₅

Mathematics

Let z₁ and z₂ be nth roots of unity which subtend a right end at the origin. Then n must be of the form
(a) 4k+1
(b) 4k+2
(c) 4k+3
(d) 4k

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