Helium atom is two times heavier than a hydrogen molecule, At 298 K, the average kinetic energy of the helium atom is
Options
(a) two times that of a hydrogen molecule (b) same […]
If 1 litre of N₂ is mixed with 2 litre of O₂, quantity explaining it is
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(a) Kinetic energy (b) partial pressure (c) rate of diffusion (d) none of these
Correct Answer: […]
If 300 mL of a gas at 27⁰ C is cooled to 7⁰C at constant pressure, its final volume will be
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(a) 350 mL (b) 540 mL (c) 135 mL (d) 280 […]
Metallic crystalline solids have
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(a) low melting and boiling point (b) are bad conductors (c) are good conductors of heat and electricity (d) only conduct heat
Correct Answer:
are good conductors of […]
In the gas equation ,PV = nRT
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(a) V is the volume of one mole of the gas (b) n no. of moles of the gas have volume V (c) n is […]
Pressure is measured by
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(a) barometer (b) anemometer (c) hygrometer (d) voltameter
Correct Answer:
barometer
Explanation:
Barometer is an instrument used to measure the pressure.
Equal volumes of two monatomic gases,A and B at same temperature and pressure are mixed.The ratio of specific heats (C(p)/C(v)) of the mixture will be
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(a) 0.83 (b) 1.5 (c) 3.3 (d) […]
In pressure cooker food is made faster because
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(a) boiling point of water is lowered (b) boiling point of water is increased (c) heat is concentrated on food only (d) heat spreads […]
Two different gases enclosed in different flasks A and B at same temperature and pressure were found to contain same number of molecules.The radio of volumes of the flasks A and B must be
PV/T= Constant. A real gas will behave as ideal gas
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(a) when both pressure and temperature are high (b) both pressure and temperature are low (c) temperature high and pressure is low […]
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