Question

A gas will approach ideal behaviour at

A. low temperature and low pressure.
B. low temperature and high pressure.
C. high temperature and low pressure.  
D. high temperature and high pressure.
Answer :   high temperature and low pressure.
Solution :
For an ideal-gas behaviour, the molecules of a gas should be far apart. The factors favouring this condition are high temperature and low pressure.

Releted MCQ Question on
Physical Chemistry >> States of Matter Solid, Liquid and Gas

Releted Question 1

Equal weights of methane and oxygen are mixed in an empty container at $${25^ \circ }C.$$  The fraction of the total pressure exerted by oxygen is

A. $$\frac{1}{3}$$
B. $$\frac{1}{2}$$
C. $$\frac{2}{3}$$
D. $$\frac{1}{3} \times \frac{{273}}{{298}}$$
View Answer
Releted Question 2

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is

A. Critical temperature
B. Boyle temperature
C. Inversion temperature
D. Reduced temperature
View Answer
Releted Question 3

The ratio of root mean square velocity to average velocity of a gas molecule at a particular temperature is

A. 1.086 : 1
B. 1 : 1.086
C. 2 : 1.086
D. 1.086 : 2
View Answer
Releted Question 4

Helium atom is two times heavier than a hydrogen molecule. At $$298 K,$$  the average kinetic energy of a helium atom is

A. two times that of a hydrogen molecule.
B. same as that of a hydrogen molecule.
C. four times that of a hydrogen molecule.
D. half that of a hydrogen molecule.
View Answer

Practice More Releted MCQ Question on
States of Matter Solid, Liquid and Gas

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Physical ChemistrySome Basic Concepts in ChemistryStoichiometryStates of Matter Solid, Liquid and GasAtomic StructureChemical ThermodynamicsSolutionsSolid StateSurface ChemistryChemical EquilibriumIonic EquilibriumChemical KineticsRedox ReactionElectrochemistryNuclear Chemistry
Inorganic ChemistryChemical Bonding and Molecular StructureOres and MetallurgyClassification of Elements and Periodicity in PropertiesHydrogenS - Block ElementsP - Block ElementsD and F Block ElementsCo - ordination CompoundsQualitative AnalysisPreparation and Properties of CompoundsEnvironmental Chemistry
Organic ChemistryGeneral Organic ChemistryIsomerismPurification and Characterisation of Organic CompoundsHydrocarbons (Alkane, Alkene and Alkyne)Aromatic hydrocarbonElectrophilic Aromatic Substitution (Haloalkanes and Haloarenes)Alkyl and Aryl HalideReactions on BenzeneAlcohol, Phenol and EtherAldehyde and KetoneCarboxylic AcidOrganic Compounds Containing NitrogenName ReactionsPolymersBiomoleculesChemistry in Everyday LifePractical Organic Chemistry