Related InterviewSolutions

• Some moles of `O_(2)` diffuse through a small opening in 18 second. Same number of moles of an unknown gas diffuse through the same opening in 45 second. Molecular mass of the unknown gas isA. `32 xx ((45)^(2))/((18)^(2))`B. `32 xx ((18)^(2))/((45)^(2))`C. `(32)^(2) xx (45)/(18)`D. `(32)^(2) xx (18)/(45)`
• At `0^(@)C` and one atm pressure, a gas occupies 100 cc. If the pressure is increased to one and a half-time and temprature is increased by one-third of absolute temperature, then final volume of the gas will be:A. 80 ccB. `88.9 cc`C. `66.7 cc`D. `100 cc`
• The root mean square speed of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at `0^(@)C` is 3180 m/s. The pressure on the hydrogen gas is ……….. (Density of hydrogen gas is `8.99xx10^(-2)kg//m^(3)`, 1 atmosphere= `1.01xx10^(5)N/m^(2)`A. 1.0 atmosphereB. 1.5 atmoshpereC. 2.0 atmosphereD. 3.0 atmosphere
• Mark the statement which is correct:A. Surface tension of a liquid increases with temperatureB. Addition of chemicals reduces the surface tension of a liquidC. Stalagmomter is used for measuring viscosity of the liquid.D. Viscosity of the liquid does not depend on intermolecular forces.
• Water boils at lower temperature on high altitude because:A. atmospheric pressure is low thereB. atmospheric pressure is high thereC. water is weakly hydrogen bonded thereD. water in pure form is found there
• Assertion: The pressure of a fixed amount of an ideal gas is proportional to its temperature. Reason: Frequency of collisions and their impact both increase in proportion of the square root of temperature.A. If both A and R are correct and R is the correct explanation of AB. If both A and R are correct but R is not the correct explanation of AC. If A is correct but R is incorrectD. If A is incorrect but R is correct
• Which of the following diagrams correctly decribes the behavior of a fixed mass of an ideal gas ? (`T` is measured in `K`)A. B. C. D.
• For an ideal gas, number of moles per litre in terms of its pressure P, gas constant R and temperature T isA. `PT//R`B. `PRT`C. `P//RT`D. `RT//P`
• The Ne atom has 10 times the mass of `H_(2)` molecule. Which of the following statements is true? I. At `25^(@)C` both of them have the same kinetic energy. II. Ten moles of `H_(2)` would have the same volume as 1 mole of Ne at same temp. and pressure. III. One mole of Ne exerts the same pressure as one mole of `H_(2)` at STP. IV. A `H_(2) ` molecule travels 10 times faster than Ne atom at same temperature. V. At STP, one litre of Ne has 10 times the density of 1 litre of `H_(2).`A. Both these gases have same kinetic energy at `27^(@)C`B. `H_(2)` molecule will travel 10 times faster than Ne atom at same temperatureC. Pressure of 1 mole Ne atom and 1 mole `H_(2)` molecules will be sameD. Ten mole of `H_(2)` and 1 mole of Ne will have same volume at a temperature of `27^(@)C`
• Assertion: Under similar conditions of temperature and pressure,`O_(2)` diffuses `1.4` times faster than `SO_(2)`. Reason: Density of `SO_(2)` is `1.4` times greater than that of `O_(2)`.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true but R is falseD. If both A and R are false