Related InterviewSolutions

• mean free path of a gas molecule increases with decrease inA. temperature and molecular diameter of the gas moleculeB. molecular diameter and pressure of the gas of the gas moleculeC. density and temperature of the gas moleculeD. volume of the gas
• Mean free path of a gas molecule increases with decreases inA. temperature of the gas moleculeB. diameter of the gas moleculeC. density of the gas moleculeD. diameter and density of the gas molecule
• Mean free path of a gas molecule increases with increase inA. temperature of the gas molculeB. diameter of the gas moleculeC. density of the gas moleculeD. temperature diameter and density of the gas molecule
• Mean free path of a gas molecule in a container depends uponA. temperature of the gas molecule onlyB. diameter of the gas molecule onlyC. density of the gas molecule onlyD. temperature diameter and density of the gas molecule
• In a gas equation, `PV = RT, V` refers to the volume ofA. any amount of gasB. one gram mole of gasC. one gram of gasD. one litre of a gas
• A piece of charcoal and a piece of shining steel of the same surface area are kept for a long time in an open lawn in bright sun.A. the steel will absorb more heat than the charcoalB. the temperature of the steel will be lower than that of the charcoalC. if both are picked up by bare hands, the steel will be felt hotter than the charcoalD. if both are picked up by bare hands, the charcoal will be felt hotter than steel
• The false statement in the following isA. radiations are electromagnetic wavesB. radiations can pass through vacuumC. radiations travel with the velocity of lightD. none of the above
• In a thermos flask, attempt is made to reduce losses of heat byA. conduction onlyB. conduction and convectionC. convection onlyD. conduction, convection and radiation
• In winter, the temperature inside the wall of a room as compared to the temperature of air is the room isA. lowerB. higherC. sameD. may be lower or higher depending on atmospheric pressure
• The door of a running refrigerator inside a room is left open. The correct statement out of the following ones isA. cooledB. warmedC. no effectD. first heated then cooled