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Multiple Choice Question with Only One Choice Correct
Two charges are placed at certain distance apart in air. When a metallic sheet is placed between them, the electrostatic force between them will

(a)	decrease	(b)	increase
(c)	remain unchanged	(d)	become zero

Chemistry

Multiple Choice Question
Chlorine acts as a bleaching agent only in presence of

(a)

dry air

(b)

moisture

(c)

sunlight

(d)

pure oxygen

Mathematics

Let x and y be two real variables such that x > 0 and xy = 1. Find the minimum value of x + y.

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