19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
At the same temperature and pressure, which of the following gases will have the highest kinetic energy per mole ?
At what temperature will the average speed of CH₄ molecules have the same value as O₂ has at 300 K?
Above graph is plotted for CO₂ at three different temperature i.e., 273K, 1273 K and 2773 K. Which of the following option is correct about these temperatures? T1 T2 T3 (a) 273 K 1273 K 2773 K (b) 2773 K 1273 K 273 K …
Five grams each of the following gases at 87 °C and 750 mm pressure are taken. Which of them will have the least volume ?
For NH₃ gas Z < 1. So the volume occupied by one mole of NH₃ (Vm) at STP is
NH₃ can be liquefied at ordinary temperature without the application of pressure. But O₂ cannot, because
Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases Gases : H₂ He O₂ N₂ Critical tem…
Assertion :For a given amount of an ideal gas, a plot of pressure (p) versus (1/V) is a straight line at a constant temperature. Reason :A given amount of an ideal gas at a constant temperature obeys Boyle’s law.
Assertion: According to Charles’ law, for a give amount of an ideal gas at a given pressure, plot of gas volume versus absolute temperature is a straight line passing through origin. Reason: Gaseous volume never vanis…
Assertion: A lighter gas diffuses more rapidly than a heavier gas. Reason: At a given temperature, the rate of diffusion of a gas is inversely proportional to the density.
Assertion :According to kinetic theory of gases, gas molecules occupy some space. Reason :Gases can be liquefied and solidified.
Assertion: Compressibility factor (Z) for non- ideal gases may be less than or greater than 1. Reason: Non-ideal gases always exert higher pressure than expected.
Assertion:CH₄, CO₂ has value of Z (compressibility factor) less than one at 0ºC. Reason :Z < 1 is due to the attractive forces dominate among the molecules.
Assertion : The pressure of a gas is inversely proportional to the volume at constant temperature and n. Reason : The gas volume is directly proportional to n at constant temperature and pressure.
Which of the following is a correct plot of the volume of fixed amount of ideal gas as a function of temperature (at constant pressure) ? (a) (b) (c) (d)
Assertion :Above critical temperature liquid state cannot be observed. Reason :Above critical temperature, the average kinetic energy of a molecule is always greater than the maximum kinetic energy a molecule can poss…
Assertion :Gases do not liquefy above their critical temperature, whatever the high pressure is applied. Reason :Above critical temperature, molecular speed is high and intermolecular force cannot hold the molecules t…
Indicate which of the following statements are correct.
At the same temperature and pressure, which of the following gases will have the highest kinetic energy per mole ?
At what temperature will the average speed of CH₄ molecules have the same value as O₂ has at 300 K?
Above graph is plotted for CO₂ at three different temperature i.e., 273K, 1273 K and 2773 K. Which of the following option is correct about these temperatures? T1 T2 T3 (a) 273 K 1273 K 2773 K (b) 2773 K 1273 K 273 K …
Five grams each of the following gases at 87 °C and 750 mm pressure are taken. Which of them will have the least volume ?
For NH₃ gas Z < 1. So the volume occupied by one mole of NH₃ (Vm) at STP is
NH₃ can be liquefied at ordinary temperature without the application of pressure. But O₂ cannot, because
Gases possess characteristic critical temperature which depends upon the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases Gases : H₂ He O₂ N₂ Critical tem…