If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will Remain unaltered Decrease three fold Increase nine fold Increase three fold TRUE ANSWER : ? YOUR ANSWER : ?
Solutions which distil without change in composition are called Supersaturated Azeotropic Ideal Saturated TRUE ANSWER : ? YOUR ANSWER : ?
The heat of vaporisation __________ with increase in pressure. Decreases Becomes zero at critical pressure Increases Both B and C TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is insensitive to changes in pressure? Heat of vaporisation Heat of fusion Melting point Both B & C TRUE ANSWER : ? YOUR ANSWER : ?
At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature. Remains unchanged Increases Increases linearly Decreases TRUE ANSWER : ? YOUR ANSWER : ?
In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure. All of these Kg-mole of solute/kg-mole of solvent Kg of solute/kg of solvent Kg-mole of solute/1000 kg of solvent TRUE ANSWER : ? YOUR ANSWER : ?
Enthalpy of a vapor gas mixture may be increased by increasing the All of these Temperature at constant humidity Temperature and the humidity Humidity at constant temperature TRUE ANSWER : ? YOUR ANSWER : ?
S.T.P. corresponds to 1 atm. absolute pressure & 15.5°C 760 mm Hg gauge pressure & 15.5°C 101.325 kPa gauge pressure & 15.5°C 760 torr & 0°C TRUE ANSWER : ? YOUR ANSWER : ?
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the Number of intermediate chemical reactions involved None of these State of aggregation & the state of combination at the beginning & the end of the reaction Temperature & pressure TRUE ANSWER : ? YOUR ANSWER : ?
At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be 6 12 10 8 TRUE ANSWER : ? YOUR ANSWER : ?