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A comet is moving in a highly elliptical orbit round the sun. When it is closest to the sun, its distance from the sun is r and its speed is v. When it is farthest from the sun, it distance from the sun is R and its speed will be

(a)		(b)
(c)		(d)

Chemistry

25 mol of H₂ and 18 mol of I₂(g) were heated in a 1-L sealed tube at 465 ^oC when at equilibrium 30.8 mol of HI were formed. Calculate the degree of dissociation of HI if the reaction was started with pure HI.

Mathematics

Multiple Answer Question
If |z² - 1| = |z|² + 1, then z lies on
(a) the real axis
(b) the imaginary axis
(c) y = x
(d) circle

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