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Stoichiometry

Stoichiometry
__________ kg of CaCO₃ on heating will give 56 kg of CaO.

144
56
100
1000

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Stoichiometry
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?

AB₂
AB₃
A₂B₃
A₂B

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Stoichiometry
The average value of heat of neutralisation of dilute solution of strong acids and strong bases is about __________ kcal/kg.mole of water formed.

6680
13360
2481
97302

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Stoichiometry
In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.

Increase
None of these
Remain unchanged
Decrease

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Stoichiometry
Which of the following is not a unit of pressure?

Parsec
Newton/metre²
Bar
Kilo-pascal

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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. Mole fraction of water vapour in the product gases is about

0.40
0.67
0.33
0.19

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