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Multiple Choice Question with Two or more Choices Correct
A parallel plate air capacitor is connected to a battery. The quantities charge, voltage, electric field and energy associated with this capacitor are given by Q₀, V₀, W₀ and U₀ respectively. A dielectric slab is now introduced to fill the space between the plates with battery still in connection. The corresponding quantities now given by Q, V, E and U are related to the previous quantities as :

(a)	Q > Q₀	(b)	V > V₀
(c)	E > E₀	(d)	U > U₀

Chemistry

Multiple Choice Question
The reduction reaction

is known as

(a)	Clemmensen reduction	(b)	Wolff-Kishner reduction
(C)	Rosenmund reduction	(d)	Catalytic reduction

Mathematics

Multiple Choice Question
The vectors a = i + j + mk, b = i + j + (m + 1)k and c = i - j + mk are coplanar if m is equal to

(a)	1	(b)	4
(c)	3	(d)	none of these

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