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Physics

The coefficient of apparent expansion of a liquid When determined using two different vessels A and B are 1 and 2 respectively. If the coefficient of linear expansion of vessel A is , the coefficient of linear expansion of vessel B is
(a) 12 / 1 + 2
(b) 1 - 2 / 2
(c) 1 - 2 + / 3
(d) 1 - 2 / 3 +


Chemistry

What will be the resultant pH when 200 mL of an aqueous solution of HCl(pH =12.0) is mixed with 300 mL of an aqueous solution of NaOH (pH =12.0)?


Mathematics
If the vectors a, b and c form the side BC, CA and AB respectively of a triangle ABC , then
(a) a . b + b .c + c .a = 0
(b) a x b = b x c = c x a
(c) a. b = b .c = c.a
(d) a x b + b x c + c x a = 0
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