61. Which of the following is an exothermic reaction?
62. Which of the following is not a unit of pressure?
63. Pick out the wrong unit conversion of temperature.
64. On mixing 56 gm of CaO with 63 gm of HNO3, the amount of Ca(NO3)2 formed is __________ gm.
65. Degrees of freedom will be equal to the number of components for a system comprising of
66. Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are PvB and Pvw respectively. The partial pressure of benzene in air-vapour mixture is
67. According to the kinetic theory, the thermal conductivity of a monoatomic gas is proportional to
68. How much O2 can be obtained from 90 kg of water?
69. Which of the following has the smallest least effect on the solubility of a solute into the solvent?
70. Atoms of the same element, but of different masses are called
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