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Physics

Two isolated metallic solid spheres of radii R and 2R are charged such that both of these have same charge density

. The spheres are located far away from each other, and connected by a thin conducting wire. Find the new charge density on the bigger sphere.

Chemistry

Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.

(a)	bromine, CCl₄	(b)	H₂, Lindlar catalyst
(c)	dilute H₂SO₄, HgSO₄	(d)	ammonical Cu₂Cl₂ solution

Mathematics

If		prove that

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