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Multiple Choice Question with Only One Choice Correct
Cadmium rods are used in a nuclear reactor for
(a) slowing down fast neutrons
(b) speeding up slow neutrons
(c) absorbing neutrons
(d) regulating the power level of the reactor

Chemistry

Multiple Choice Question
On passing an electric current, the quantity of deposition of a metal on cathode depends on the
(a) shape of cathode
(b) size of cathode
(c) concentration of electrolytic solution
(d) quantity of charge and charge number of metal ion

Mathematics

If the system of homogeneous equations x + ay = 0, az + y = 0 and ax + z = 0 has infinite number of solutions, then the value of a is

(a)	-1	(b)	1
(c)	0	(d)	no real values

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