11th Class FSc Part 1 Chemistry Chapter Wise Online MCQ Test With Answer PDF

Chemistry Fsc Part 1 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
10	One of the following substances is not used as a drying reagent in a desiccator	Cons. H<sub>2</sub>SO<sub>4</sub> P<sub>2</sub>O<sub>5</sub> Silica gel 50% KOH
11	Chromatography is the process which involve the distribution of a solute between	Two mobile phases A stationary phase and mobile phase Two stationary and two mobile phases Two stationary phases
12	In paper chromatograghy the point at which the solvent rises to maximum extent is called	Event Chromatogram Solvent front Base line
13	The iodine present in water can be separated by which one of the following techniques	Sublimation Chromatography Filtration Solvent extraction
14	When i₂present in the aquous layer in the form of I^-1₃foes to CCI₄layer, then the change in colour is from	Purple to brown Purple to green Green to brown Brown to purple
15	One of the following substances does not undergo sublimation	KMnO<sub>4</sub> Naphthalene NH<sub>4</sub>CI Iodine
16	Which one of the following substances is used as decolouring agent	Animal charcol Concentrated H<sub>2</sub>SO<sub>4</sub> CaCI<sub>2</sub> Silica gel
17	In order to have good crystals of a substance the temperature of the system at the time of preparation of solution should be	Around 0°C Around room temperature Sufficiently more than room temperature Just above the room temperature

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