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Gaseous State (Class XI / XII)

Covers the gaseous state including Ideal Gas Equation, Kinetic Molecular Theory, Gas Laws, Critical Temperature, Graham's Law of Diffusion, and Avogadro's Law. Suitable for Class XI/XII Chemistry students.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which gas is heavier than air?

  1. Oxygen
  2. Ammonia
  3. Methane
  4. Nitrogen
  5. -
Question 2 Multiple Choice (Single Answer)

What is the criteria at which a gas will approach ideal behaviour?

  1. Low temperature and low pressure
  2. High temperature and low pressure
  3. Low temperature and high pressure
  4. High temperature and high pressure
  5. -
Question 3 Multiple Choice (Single Answer)

Which of the following entities is an intensive quantity

  1. Energy
  2. Weight
  3. Volume
  4. Length
  5. Temperature
Question 4 Multiple Choice (Single Answer)

Which of the following gases will have the highest kinetic energy per mole at the same temperature and pressure?

  1. Hydrogen
  2. Oxygen
  3. Methane
  4. All the above gases will have the same KE.
  5. -
Question 5 Multiple Choice (Single Answer)

Which of the following gases has lower density than air?

  1. Neon
  2. Oxygen
  3. Chlorine
  4. Propane
  5. -
Question 6 Multiple Choice (Single Answer)

What happens if the volume and temperature of a gas are doubled?

  1. Pressure is doubled.
  2. Pressure is reduced to half.
  3. Pressure is slightly increased.
  4. Pressure remains the same.
  5. -
Question 7 Multiple Choice (Single Answer)

Which of the following statements is incorrect regarding kinetic molecular theory of gases?

  1. Molecules move randomly in all directions.
  2. Attractional force between gas molecules is negligible.
  3. In comparison to the total volume of gas, molecules have comparable values.
  4. Gases are composed of a large number of particles that behave like hard spherical objects in a state of constant random motion.
  5. -
Question 8 Multiple Choice (Single Answer)

What does Graham's law of diffusion state?

  1. It states that at constant temperature and pressure, the rate of diffusion of a gas is inversely proportional to the square root of its density.
  2. Equal volumes of all gases at the same temperature and pressure have the same number of molecules.
  3. At constant pressure, the volume of a given mass of gas is directly proportional to the absolute temperature.
  4. At constant temperature, the volume of a given mass of a gas is inversely proportional to pressure.
  5. -
Question 9 Multiple Choice (Single Answer)

One molecule of a monoatomic gas A reacts with two volumes of homo nuclear diatomic gas B to form a gaseous compound of the formula

  1. AB2
  2. AB4
  3. A4B
  4. A2B
  5. -
Question 10 Multiple Choice (Single Answer)

The volume of an elementary gas A, on decomposition, gives 3 volumes of a diatomic gas B. The atomicity of gas A is

  1. 1
  2. 2
  3. 3
  4. 4
  5. -
Question 11 Multiple Choice (Single Answer)

How can an equation of state be represented?

  1. M.V = wP.R.T
  2. MT/R = wV/P
  3. wR/P = VM/T
  4. None of these
  5. -
Question 12 Multiple Choice (Single Answer)

On what factor(s) does gas constant R depend?

  1. Nature of the gas
  2. Pressure, temperature and volume
  3. Amount of gas
  4. Temperature
  5. -
Question 13 Multiple Choice (Single Answer)

The critical temperature of water is higher than oxygen because a water molecule has

  1. lesser electrons than oxygen
  2. dipole moment
  3. V shape
  4. 2 covalent bonds
  5. -
Question 14 Multiple Choice (Single Answer)

Which of the following statements is correct?

  1. One gas is ideal in all the real gases present.
  2. Helium and hydrogen are ideal gases.
  3. Ideal gas is an imaginary gas.
  4. Ideal gas can be liquefied by lowering the temperature and increasing the pressure.
  5. -
Question 15 Multiple Choice (Single Answer)

The statement "one mole of gas at NTP occupies 22.4 litres'' may be derived from

  1. Gay Lussac's law
  2. Boyle's law
  3. Graham's law
  4. Avogadro's law
  5. -
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