a) 96 b) 128 c) 20.25 d) 64 Answer: c Explanation:
View QuestionA bubble of air is underwater at temperature 15°C and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is 25°C and the pressure is 1.0 bar, what will happen to the volume of the bubble ?
a) Volume will become greater by a factor of 1.6. b) Volume will become greater by a factor ...
View QuestionA gaseous mixture was prepared by taking equal mole of CO and N2. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N2) in the mixture is :
A gaseous mixture was prepared by taking equal mole of CO and \[N_{2}\]. If the total pressure of ...
View QuestionTwo gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be
a) 50.00 u b) 12.25 u c) 6.50 u d) 25.00 u Answer: b Explanation: ...
View QuestionBy what factor does the average velocity of a gaseous molecule increase when the temperature (in Kelvin) is doubled ?
a) 2.0 b) 2.8 c) 4.0 d) 1.4 Answer: d Explanation:
View QuestionThe pressure exerted by 6.0g of methane gas in a 0.03m^3 vessel at 129°C is (Atomic masses : C = 12.01, H = 1.01 and R = 8.314 kpa dm^3 k^-1 mol^-1)
The pressure exerted by 6.0g of methane gas in a \[0.03m^{3}\] vessel at 129°C is (Atomic masses : C ...
View QuestionIf a gas expands at constant temperature, it indicates that
a) kinetic energy of molecules decreases b) pressure of the gas increases c) kinetic energy of molecules remains the same
View QuestionA weather ballon filled with hydrogen at 1 atm and 27°C has volume equal to 12000 litres. On ascending it reaches a place weather ballon filled with hydrogen at 1 atm and 27°C where the temperature is –23°C and pressure is 0.5 atm. The volume of the balloon is
a) 24000 litres b) 20000 litres c) 10000 litres d) 12000 litres Answer: b Explanation: ...
View QuestionWith the increasing molecular weight of a liquid, the viscosity
a) decreases b) increase c) remains constant d) All are wrong Answer: b Explanation: Visocity \[\propto\] molecular weight
View QuestionWith rise in temperature, viscosity of a liquid
a) increase b) decrease c) remains constant d) may increase or decrease Answer: b Explanation: Visocity \[\propto\] ...
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