PYQSide ExamsMy practice

States of Matter · Question 26

AIPMT 2008MCQEasy📈 Topic in 0% papers+4−1
1

If a gas expands at constant temperature, it indicates that

  1. kinetic energy of molecules remains the same
  2. number of the molecules of gas increases
  3. kinetic energy of molecules decreases
  4. pressure of the gas increases

Answer

(1) kinetic energy of molecules remains the same

Solution

As per kinetic theory, average kinetic energy of gas molecules = 32kT, i.e., it depends only on temperature.

T is constant kinetic energy of the molecules remains the same.

The number of molecules does not change, and by Boyle's law (PV = constant) the pressure decreases on expansion.

Answer: (1)

Out of syllabusAIPMT 2008

Keep practising — States of Matter

2

The surface tension of which of the following liquids is maximum ?

  1. C2H5OH
  2. CH3OH
  3. H2O
  4. C6H6
AIPMT 2005
3

Van der Waals real gas acts as an ideal gas at which conditions?

  1. High temperature, low pressure
  2. Low temperature, high pressure
  3. High temperature, high pressure
  4. Low temperature, low pressure
Out of syllabusAIPMT 2002
4

The beans are cooked earlier in pressure cooker because

  1. boiling point increases with increasing pressure
  2. boiling point decreases with increasing pressure
  3. extra pressure of pressure cooker softens the beans
  4. internal energy is not lost while cooking in pressure cooker
Out of syllabusAIPMT 2001
5

Which of the following expressions correctly represents the relationship between the average molar kinetic energy, KE, of CO and N2 molecules at the same temperature?

  1. KECO = KEN2
  2. KECO > KEN2
  3. KECO < KEN2
  4. cannot be predicted unless volumes of the gases are given
Out of syllabusAIPMT 2000

All States of Matter PYQs →

PDFDownload States of Matter PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolid StateSolutionsElectrochemistryChemical KineticsSurface Chemistry
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular StructureHydrogens-Block Elementsp-Block Elements (Group 13 & 14)Environmental ChemistryGeneral Principles of Isolation of Elementsp-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPolymersChemistry in Everyday LifePrinciples Related to Practical Chemistry