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A particle describes a horizontal circle on the smooth surface of an inverted cone.The height of the plane of the circle above the vertex is 9.8 cm. Find the speed of the particle.

Chemistry

Multiple-Choice Question

The reaction

is known as

(a)	Wolff-Kishner reduction	(b)	Clemmensen reduction
(c)	Cannizzaro reaction	(d)	Rosenmund reduction

Mathematics

Passage Based Question
Passage I
A class consists of n students. For 0

n, let E_k denote the event that exactly k student out of n pass in the examination. Let P(E_k) = p_k and let A denote the event that a student X selected at random pass in the examination.
If P(E_k) = C for 0

n, then P(A) equals