FSC Part 1 Chemistry Chapter 3 Gases Online Test | ilmkidunya

Chemistry Fsc Part 1 Chapter 3 Online Test

Sr. #	Questions	Answers Choice
1	The partial pressure of oxygen in lungs is	760 torr 320 torr 159 torr 116 torr
2	The commonly used unit of pressure by meteorologists is.	Atmosphere Pascal Milli Pound inch3
3	Vapour pressure of liquid depends upon	Amount of liquid Surface area Temperature Size of container
4	Partial pressure of oxygen in the air is.	156 torr 157 torr 158 torr 159 torr
5	Pressure remaining constant at which temperature the volume of a gas will come twice of what it is at 0 ^oC	546 <sup>o</sup>C 200 <sup>o</sup>C 546 K 273 K
6	Mass of 22.4 dm3 of N2 at STP is.	28 gm 14 gm 1.4 gm 2,8 gm
7	The molar volume of CO2 is maximum at.	STP 127 <sup>o</sup>C and 1 atm 0 <sup>o</sup>C and 2 atm 273 <sup>o</sup>C and 2 atm
8	If absolute temperature of the gas is doubled and the pressure is reduced to one half the volume the gas will.	Remains uncharged Increase four time Reduce to 1/4 Be doubled
9	Borax has the chemical formula.	KNO3 Na2B3O7.10H2O Na2CO3 NaNO3
10	Noon has low critical temperature and pressure as compared to other gases. the most probable reason is that	Its octet is complete It is a monoatomic gas It has very low polarizability It has least forces of attraction
11	The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as	Boiling temperature Consulate temperature Absolute zero Critical temperature
12	The molecules of a gas show more deviation from ideal behaviour at low temperature, because	Attractive force dominate at low temperature Kinetic energies are increased Collisions become less frequent Densities of the gases increase
13	The free expansion of the gas from high pressure towards the low pressure causes	Increase of temperature Decrease of temperature Grater number of collisions among the molecules Decrease of velocity of gas molecules
14	Rate of diffusion of CO and N₂are same at room temperature due to the reason, that	Both are diatomic molecules Both have same multiple bond in them Both have lone pairs in them Both have same molar masses
15	In gas occupies a volume of 2 dm³at 27°C and I atm pressure. The expression for its volume at S.T.P. is
16	Gas equation is derived by combining	Avogadro's and Charles's Law Boyle's and Charles's Law Avogadro's and Boyle's Law Avogadro's, Boyle's and Charles's Law
17	Normal temperature and pressure (S.T.P) of gas rafers to	273 K and 76 mm Hg 273° C and 760 mm Hg 273 K and 760 mm Hg 273° C and 76 mm Hg

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