One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to

Stoichiometry
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to

1335

1525

1225

1735

1335

1525

1225

1735

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Stoichiometry
Elements in a periodic table are arranged in order of their

Mass number

Metallic characteristics

Atomic number

Atomic weight

Mass number

Metallic characteristics

Atomic number

Atomic weight

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Stoichiometry
Addition of a non-volatile solute to a pure solvent

Increases its freezing point

Increases its boiling point

Decreases its freezing point

Both B and C

Increases its freezing point

Increases its boiling point

Decreases its freezing point

Both B and C

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Stoichiometry
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

Elevation in boiling point in the ratio of their molecular weights

Different elevation in boiling point

None of these

Same elevation in boiling point

Elevation in boiling point in the ratio of their molecular weights

Different elevation in boiling point

None of these

Same elevation in boiling point

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Stoichiometry
A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is

380

880

630

760

380

880

630

760

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Stoichiometry
A long cylinder and a sphere both of 5 cms diameter are made from the same porous material. The flat ends of cylinder are sealed. Both the cylinder and sphere are saturated with the same solution of sodium chloride. Later both the objects are immersed for a short and equal interval of time in a large tank of water which is well agitated. The fraction of salt remaining in the cylinder and the sphere are Xc and Xs respectively. Which of the following statement is correct?

Xc < Xs

Xc > Xs

Xc greater/less than Xs depending on the length of the cylinder

Xc = Xs

Xc < Xs

Xc > Xs

Xc greater/less than Xs depending on the length of the cylinder

Xc = Xs

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Stoichiometry

Stoichiometry Elements in a periodic table are arranged in order of their

Stoichiometry Addition of a non-volatile solute to a pure solvent

Stoichiometry Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

Stoichiometry A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is

Stoichiometry
Elements in a periodic table are arranged in order of their

Stoichiometry
Addition of a non-volatile solute to a pure solvent

Stoichiometry
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

Stoichiometry
A car tyre of volume 0.057 m³ is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is