During a phase change process like sublimation, vaporisation, melting etc., the specific __________ does not change. Internal energy Enthalpy Entropy Gibbs free energy TRUE ANSWER : ? YOUR ANSWER : ?
A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is N₂O₃ None of these N₂O₄ N₂O₅ TRUE ANSWER : ? YOUR ANSWER : ?
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. Raoult's Amgat's Henry's None of these TRUE ANSWER : ? YOUR ANSWER : ?
The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight. Decreases Remains unchanged Increases Increases linearly TRUE ANSWER : ? YOUR ANSWER : ?
pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be 7 10 14 TRUE ANSWER : ? YOUR ANSWER : ?
Pick out the wrong unit conversion of temperature. °C = (F- 32) x 0.555 °R = 273 + °F °F = (°C + 17.778) x 1.8 Temperature difference of 1°K = 1°C = 9/5 °F TRUE ANSWER : ? YOUR ANSWER : ?
For a given mass of a gas at constant temperature, if the volume 'V' becomes three times, then the pressure 'P' will become P/3 9P 9P² 3P TRUE ANSWER : ? YOUR ANSWER : ?
The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the Total pressure Temperature None of these Nature of both the gas & the liquid TRUE ANSWER : ? YOUR ANSWER : ?
Normality of a solution does not change with the increase in the Temperature Solute concentration Dilution of the solution Pressure TRUE ANSWER : ? YOUR ANSWER : ?
Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the Attractive forces between like and unlike molecules are approximately equal Sizes of the component molecules are approximately equal All of these Component molecules are non-polar and no chemical combination or molecular association between unlike molecules takes place in the formation of the solution TRUE ANSWER : ? YOUR ANSWER : ?