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In an inelastic collision of two bodies, which of the following do not change after the collision?

(a) Total Kinetic Energy
(b) Total Linear momentum
(c) Total Energy
(d) Total angular momentum

Chemistry

According to Graham’s law at a given temperature the ratio of the rates of diffusion
of gases A and B is given by

Mathematics

Let . The number of equations of the form px² + qx + 1 = 0 having real roots is
(a) 15 (b) 9 (c) 7 (d) 8

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