KVPY Government Jobs Exams

At 298 K, the ratio of osmotic pressures of two solutions of a substance with concentrations of 0.01 M and
0.001 M, respectively, is
(A) 1 (B) 100 (C) 10 (D) 1000

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KVPY Other Question

Assuming ideal behaviour, the enthalpy and volume of mixing of two liquids, respectively, are
(A) zero and zero (B) + ve and zero (C) –ve and zero (D) – ve and – ve The rate of gas phase chemical reactions generally increases rapidly with rise in temperature. This is mainly
because
(A) the collision frequency increases with temperature
(B) the fraction of molecules having energy in excess of the activation energy increases with temperature
(C) the activation energy decreases with temperature
(D) the average kinetic energy of molecules increases with temperature