181. Total energy at a point comprises of _____________ energy?
A. Potential & kinetic
B. Pressure
C. Internal
D. All A., B. & C.
182. Which of the following is not a colligative property ?
A. Osmotic pressure
B. Depression of freezing point
C. Lowering of vapor pressure
D. None of these
183. Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules ____________________?
A. Do not lose energy on collision
B. Are above the inversion temperature
C. Do not exert attractive force on each other
D. Do work equal to loss in kinetic energy
184. The quantity of heat required to evaporate 1 kg of a saturated liquid is called __________________?
A. Specific heat
B. 1 Kcal
C. Sensible heat
D. Latent heat
185. 1 torr is equal to ______________ mm Hg column?
A. 1
B. 0.1
C. 10
D. 1000
186. 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 pv B and pv w respectively. The partial pressure of benzene in air-vapour mixture is_________________?
A. PvB
B. xB.PvB
C. (Patm – Pvw)xB
D. xB.Patm
187. If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its___________________?
A. Bubble point
B. Saturation temperature
C. Dew point
D. Both B. and C.
188. Addition of a non-volatile solute to a pure solvent ____________________?
A. Increases its freezing point
B. Increases its boiling point
C. Decreases its freezing point
D. Both B. and C.
189. ______________ equation gives the effect of temperature on heat of reaction ?
A. Kirchoff’s
B. Maxwell’s
C. Antoine
D. Kistyakowsky
190. “The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface”. This statement pertaining to the solubility of gases in liquid is the ______________ law?
A. Raoult’s
B. Henry’s
C. Amagat’s
D. None of these