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Multiple Choice Question with Only One Choice Correct
A cylindrical tube, open at both ends, has fundamental frequency n. If one of the ends is closed, the fundamental frequency will become

(a)	n/2	(b)	n
(c)	2n	(d)	4n

Chemistry

Fill in the Blank :
While dealing with thermochemical reactions, the temperature and pressure of reactant must be ........ as those of products.

Mathematics

Multiple Choice Question
The number of 5-digit numbers of distinct digits in which the middle digit is the largest is

(a)		(b)
(c)	10, 078	(d)	none of these

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