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Questions

Physics

Multiple Choice Question with Only One Choice Correct
Two blocks of masses 10 kg and 4 kg are connected by a spring of negligible mass and placed on a frictionless horizontal surface. An impulse gives a velocity of 14 m/s to the heavier block in the direction of the lighter block. The velocity of the center of mass is

(a)	30 m/s	(b)	20 m/s
(c)	10 m/s	(d)	5 m/s

Chemistry

C₆H₅OH + RCOCl

HCl + ............

...........

Mathematics

Multiple Choice Question
If |z₁| = |z₂| = |z₃| = 1 and z₁ + z₂ + z₃ =

, then the complex number z₂

₃ + z₃

₁ + z₁

₂ is
(a) purely imaginary
(b) purely real
(c) positive real number
(d) none of these

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