MDCAT Chemistry Chapter 3 Gases Online Test With Answers

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MDCAT Chemistry Chapter 3 Gases Online Test

Sr. # Questions Answers Choice
1 Density of a gas increases by increasing value of R decreasing value of R increasing T decreasing T
2 At higher temperature what is true for gases pressure is decreased volume is decreased number of moles are decreased KE is increased
3 The volume of a real gas is constant increases with T decrease becomes zero at absolute zero never becomes zero
4 If volume of an ideal gas at 0C° 536cm3, what is volume at 1°C 373 cm3 646 cm3 Becomes 0cm3 746 cm3
5 Under which condition CO has the maximum molar volume high T and P Low T and High p high T and low P Low T and low P
6 At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in: pressure No. of moles Volume All
7 The number of molecules in 22.4 dm3 of gas at 0°C and 1 atm are 6.02×10(23) 6.02× 10(25) 6.02×10(22) 6.02×10(21)
8 If volume of an ideal gas at 0°C 536cm3, what is volume at 1°C 373 cm3 646 cm3 Becomes 0cm3 746 cm3
9 Under which condition CO has the maximum molar volume. high T and P Low T and High p high T and low pressure Low T and low P
10 At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in pressure No. of moles Volume all of these
11 The relationship between density and molar mass of a gas is Directly proportional <sup>Inversly proportional</sup> Straight line Stoichiometric
12 Charles's law is only obeyed at which temperature scale Celsius Kelvin Fahrenheit both A&amp;B
13 The actual volume of gas molecules is considered negligible at following pressures 2atm 4atm 6 atm 8 atm
14 According to the general gas equation, density of an ideal gas depends upon Pressure Temperature Molar mass of the gas All of the above
15 At absolute zero the molecules of hydrogen gas will have Only translatioral motion Only vibrational motion Only rotational motion All the motion are ceased
16 Which of the statement is applicable for both ideal and real gases molecules? Have no forces of attraction Collisions between the molecules is elastic Molecules are in random movement The actual volume of gas is negligible as compared to the volume of gas
17 Which of the following is the correct equation to calculate relative molecular mass of a gas M=mPRTV M=mPR/VT M=PV/mRT M=mRT/PV
18 Gas is enclosed in a container of 20cm3 with the moving piston. According to kinetic theory of gases, what is the effect on freely moving molecules of the gas if temperature is increased from 20°C to 100C. Colliding capability of molecule will become lower Pressure will become one half Temperature has no effect on freely moving molecules Volume will be increased
19 The mono atomic gases are Halogens Noble gases 6h group elements Nitrogen and oxygen
20 The volume of gas depends upon the------- moleules Size of Space between Molecular weight both a and b
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