GasesIdeal and Real Gas Behaviour171Choose the best answerHelium shows very small deviation from ideal-gas behaviour mainly because:AIt has very strong intermolecular forcesBIt has very weak intermolecular attractive forcesCIts atoms have very large volumeDIt has a high boiling point Like 0 Discuss 0Share
GasesMolar Volume at STP172Choose the best answerAt STP (273 K and 1 atm), one mole of an ideal gas occupies approximately:A11.2 dm³B22.4 dm³C44.8 dm³D1.0 dm³ Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Gases#Pressure Conversion173Choose the best answerHow many atmospheres correspond to 1050 torr? (Sindh MDCAT 2019)A1.050B10.38C1.380D2.750 Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Gases#Ideal Gas Equation174Choose the best answerThe value of R (the gas constant) is: (Sindh MDCAT 2019)A0.0821 dm³ atm K mole⁻¹B803143 Nm K⁻¹ moleC0.0821 dm³ atm K⁻¹ mole⁻¹D8.3143 dm³ atm K⁻¹ mole⁻¹ Like 0 Discuss 0Share
GasesElastic Collisions175Choose the best answerAn elastic collision between gas molecules means that:ATheir velocities never changeBTotal kinetic energy is conservedCTheir directions never changeDPotential energy remains permanently zero Like 0 Discuss 0Share