11th Chemistry Weekly Test - 2 ( Gaseous State )

MABS Institution

11th Chemistry Weekly Test - 2 ( Gaseous State )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

Deep sea divers ascend slowly and breath continuously by time they reach the surface. Give reason.

Aerosol cans carry clear warning of heating of the can. Why?

State Dalton's law of partial pressure.

Define atmospheric pressure

What are the applications of Charles' law?

State Avogadro's hypothesis.

Explain what happens of a balloon is moved from an ice-cold water bath to a boiling water bath.

CO₂ gas is cannot be liquefied at room temperature. Give reason.

Explain why the pressure increase two-fold, when the volume is halved?

What is partial pressure of a gas?

Part - B

Generic 5 - Answer All Question

Use the graphs to answer the question below.

i) Which of the graphs is the best representation of pressure and temperature (measured I kelvin) for one mole of ideal gas
ii) Which of the graphs is the best representation of pressure and volume of one mole of an ideal gas.
iii) Which of the above graph represents PV vs P of one mole of an ideal gas?

Explain the following observations
(a) Aerated water bottles are kept under water during summer
(b) Liquid ammonia bottle is cooled before -opening the seal
(c) The tyre of an automobile is inflated to slightly lesser pressure in summer than in winter
(d) The size of a weather balloon becomes larger and larger as it ascends up into larger altitude

For a gaseous mixture of 2.41 g of helium and 2.79 g of neon in an evacuated 1.04 dm3 container at 298 K calculate the partial pressure of each gas and hence find the total pressure of the mixture.
Find the moles of O₂ gas having pressure 250 bar in 500 ml vessel at 350 k temperature.

An athlete in a kinesiology research study has his lung volume of 7.05 dm³ during a deep inhalation. At this volume, the lungs contain 0.312 mole of air. During exhalation, the volume of his lung decreases to 2.35 dm³. How many moles of air does the athlete exhale during exhalation? (assume pressure and temperature remain constant).

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11th Chemistry Weekly Test - 2 ( Gaseous State )

MABS Institution

11th Chemistry Weekly Test - 2 ( Gaseous State )-Aug 2020

Part - A

Generic 2 - Answer All Question

Deep sea divers ascend slowly and breath continuously by time they reach the surface. Give reason.

Aerosol cans carry clear warning of heating of the can. Why?

State Dalton's law of partial pressure.

Define atmospheric pressure

What are the applications of Charles' law?

State Avogadro's hypothesis.

Explain what happens of a balloon is moved from an ice-cold water bath to a boiling water bath.

CO2 gas is cannot be liquefied at room temperature. Give reason.

Explain why the pressure increase two-fold, when the volume is halved?

What is partial pressure of a gas?

Part - B

Generic 5 - Answer All Question

For a gaseous mixture of 2.41 g of helium and 2.79 g of neon in an evacuated 1.04 dm3 container at 298 K calculate the partial pressure of each gas and hence find the total pressure of the mixture.

Find the moles of O2 gas having pressure 250 bar in 500 ml vessel at 350 k temperature.

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CO₂ gas is cannot be liquefied at room temperature. Give reason.

Find the moles of O₂ gas having pressure 250 bar in 500 ml vessel at 350 k temperature.