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Multiple Choice Question with Only One Choice Correct
If n drops, each of capacitance C and charged to a potential V, coalesce to form a big drop, the ratio of the energy stored in the big drop to that in each small drop will be

(a)	n : 1	(b)	n^4/3 : 1
(c)	n^5/3 : 1	(d)	n² : 1

Chemistry

Multiple Choice Question
Ethene can be separated from ethyne by passing the mixture through

(a)

concentrated H₂SO₄

(b)

ammonical Cu₂Cl₂

(c)

pyrogallol

(d)

charcoal powder

Mathematics

If the sum of the first 2n terms of the A.P. 2, 5, 8, ....., is equal to the sum of the first n terms of the A.P. 57, 59, 61, ......, then n equals

(a)

(b)

(c)

(d)

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