MCQ Matter And Its States SET 6ALL MCQ For Matter And Its States 1. All gases will occupy zero volume when the temperature is reduced to:273°C-273°C0°C273°CQuestion 1 of 152. A gas which obeys the gas laws is known as:An ideal gasA lighter gasA real gasA heavier gasQuestion 2 of 153. Rate of diffusion of a gas is:Directly proportional to its densityInversely proportional to the square root of its densityDirectly proportional to its molecular massInversely proportional to the square root of its molecular massQuestion 3 of 154. Maximum deviation from ideal gas is expected fromH2(g)CH4(g)NH3(g)N2(g)Question 4 of 155. In a flask of ‘V’ litres, 0.2 moles of O2, 0.4 moles of N2, 0.1 moles of NH3 and 0.3 moles of He gases are present at 27°C. If total pressure exerted by these non-reacting gases is 1 atm, the partial pressure exerted by N2 gas is0.4 atm 0.2 atm 0.1 atm0.3 atmQuestion 5 of 156. In order to increase the volume of a gas by 10%, the pressure of the gas should beincreased by 10% decreased by 10% decreased by 1%increased by 1%Question 6 of 157. One mole of oxygen at 273 k and one mole of sulphur dioxide at 546 k are taken in two separate containers, then,kinetic energy of O2 > kinetic energy of SO2 . kinetic energy of both are equal. kinetic energy of O2 < kinetic energy of SO2.None of theseQuestion 7 of 158. In the equation of state of an ideal gas PV = n RT, the value of the universal gas constant would depend only onthe pressure of the gas the units of the measurement the nature of the gasNone of the aboveQuestion 8 of 159. In two vessels of 1 L each at the same temperature 1 g of H2 and 1 g of CH4 are taken, for theseVrms values will be same total kinetic energy will same kinetic energy per/mol will be same pressure will be sameQuestion 9 of 1510. Sublimation occurs whena solid changes into a gasa gas changes into a solida liquid changes into a gasa solid changes into a liquidQuestion 10 of 1511. The melting and freezing of a substance occurs atsame temperatureless than boiling pointmore than freezing pointmore than melting pointQuestion 11 of 1512. If the liquid is heated to increase the kinetic energy then the liquid willevaporate slowlynot evaporateevaporate fasterboilQuestion 12 of 1513. As the molecular mass of gases increases their densitydecreasesincreasesremains constantnone of aboveQuestion 13 of 1514. The position of liquid molecules arefixednot fixednot slidingnone of aboveQuestion 14 of 1515. Boiling point is the temperature at which vapor pressure ismore than external pressureless than external pressureequal to external pressurenot related to external pressureQuestion 15 of 15 Loading...
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