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Quiz 19
Mdcat-past-papers Quiz
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361. Select the greatest number of particles in the following:
2g of Na
2g of H₂
2g of N₂
2g of CO₂
362. Small diffusion in solid is due to:
Very fast motion of its particle
Vibrational motions of its particle
Rotational motion of its particle
Translational motion of its particle
363. Graph of volume versus total pressure at constant temperature is:
a straight line
First a curve and then a straight line
First a straight line & then a curve line
Non linear
364. The gas law in which the pressure is kept constant is known as:
Boyle's law
Charles Law
Dalton's Law
Graham's Law
365. The pressure 14.7 psi is equal to:
1 torr
1 pascal
1 atm
1 Nm
366. According to Charles law volume of gas reduces to zero at:
-12°C
0°C
-273.15°C
-210°C
367. When the pressure of a gas is plotted against volume at constant temperature, the curve obtained is known as:
Isobar
Isotherm
Isochoric
Isotonic
368. Which variable mentioned in ideal gas is assumed to be a constant in other gas laws?
Volume
mmHg
Pressure
Number of moles
369. The SI unit of pressure is:
Pascal
mmHg
Torr
atm
370. 760 torr is equal to:
1 Pascal
760 Pascal
76 Pascal
01325 Pascal
371. For the gaseous phases reaction, when number of moles of reactants and products are equal:
The values of Kn and Kz is different
The value of Kp is greater than Kz
The value of Kz is greater than Kp
The value of Kp and Kc are same
372. Which gas obeys all gas laws?
Ideal gas
CO2
O2
Cl2
373. Half atmospheric pressure is:
400torr
101.3 Pa
50622Pa
8.5 pounds
374. Pressure remaining constant, at which temperature volume of gas will become twice to be volume at 0°C?
546°C
200°C
546°C
273°C
375. 1 calorie is equal to:
4.18J
4.18KJ
18KJ
1.8J
376. A gas has a volume of 10dm³ at 10°C. At what temperature the volume of the gas is reduced to half?
283k
566k
142k
373k
377. The number of molecules in 22.4dm³ of H₂ gas at 0° and 1atm are:
60.2x10²³
6.02x10²³
60.2x10²⁵
6.02x10²²
378. Which of the following is the correct equation to calculate relative molecular mass of a gas?
M=mPR/VT
M=PV/mRT
M=mPRT/V
M=mRT/PV
379. If we want to raise the temperature of one mole of an ideal gas by one kelvin, we have to provide how much amount of energy?
0.0821 joules
8.314 dm³-atm
0.0821KJ
0.0821 dm³-atm
380. The process of heat flow between hotter and colder gases remains continued until all the molecules have equal:
Average translational kinetic energy
Average rotational kinetic energy
Average translational potential energy
Average vibrational kinetic energy
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