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Physics

Multiple Choice Question with Only One Choice Correct
Which of the following observers is/are inertial?
(a) A child revolving in a merry-go-round
(b) A driver in a car moving with a constant velocity
(c) A pilot in an aircraft which is taking off
(d) A passenger in a train which is slowing down to a stop

Chemistry

Multiple Choice Question
Lead suboxide is
(a) PbO (b) PbO2 (c) Pb2O (d) Pb2O3

Mathematics

Multiple Choice Question
Equation of a line passing through the intersection of the lines x + 2y - 10 = 0 and 2x + y + 5 = 0 is
(a) 3x + 3y = 45 (b) 15x + 18y - 50 = 0
(c) 2x + 3y = 5 (d) 18x + 15y - 50 = 0
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