FSC Part 1 Chemistry Chapter 3 Gases Online Test | ilmkidunya

Chemistry Fsc Part 1 Chapter 3 Online Test

Sr. #	Questions	Answers Choice
1	Gases deviate from ideal behaviour at high pressure. Which of the following is correct for non-ideal behaviour of gases	At high pressure, the gas molecules move in one direction only At high pressure, the collisions between the gas molecules are increased At high pressure, the volume of the gas becomes insignificant At high pressure, the intermolecular attraction becomes significant
2	Equal masses of methane and oxygen are mixed in an empty container at 25°C, the fraction of total pressure exerted by oxygen is	1/3 8/9 1/9 16/17
3	the order of the rate of diffusion of gases NH₃, SO₂, CI₂and CO₂is	NH<sub>3 </sub>> SO<sub>2</sub>>CI<sub>2</sub>CO<sub>2</sub> NH<sub>3</sub>> CO<sub>2</sub>> SO<sub>2</sub>> CI<sub>2</sub> CI<sub>2</sub>> SO<sub>2</sub>> CO<sub>2</sub>> NH<sub>3</sub> NH<sub>3</sub>> CO<sub>2</sub>> CI<sub>2</sub>> SO<sub>2</sub>
4	The molar volume of CO₂is maximum at	STP (0°C and 1 atm) 127° C and 1 atm 0°C and 2 atm 273°C and 2 atm
5	How should the condition be changed to prevent the volume of a given gas from expanding when its mass is increased	Temperature is lowered and pressure is increased Temperature is increase and pressure is lowered Temperature and pressure both are lowered Temperature and pressure both are increased
6	If absolute temperature of a gas is doubled and the pressure is reduced to one half, the volume of the gas will	Remain unchanged Increase four times Reduce to 1/4 Be doubled
7	Which of the following will have the same number of molecules at STP	280 cm<sup>3</sup>of CO<sub>2</sub>and 280 cm<sup>3</sup>of N<sub>2</sub>O 11.2 dm<sup>3</sup>of O<sub>2</sub>and 32 g of O<sub>2</sub> 44 g of CO<sub>2</sub>and 11.2 dm<sup>3</sup>of CO 28 g of N<sub>2</sub>and 5.6 dm<sup>3</sup>of oxygen
8	The number of molecules in one dm³of water is close to
9	Pressure remaining constant at which temperature the volume of a gas will become twice of what it is at 0° C	546°C 200°C 546 K 273 K

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