Mole Concept and Stoichiometry — Important Questions
ICSE · Class 10 · Chemistry
38 important questions from Mole Concept and Stoichiometry for ICSE Class 10 Chemistry, with answers. Written for the board exams 2027.
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See them allImportant Questions from Mole Concept and Stoichiometry
Which of the following are diatomic molecules?
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H₂, O₂, Cl₂
H₂, O₂, and Cl₂ are diatomic molecules containing two atoms each. He is monoatomic and O₃ is triatomic.
One mole of carbon atoms has a mass of:
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12 g
One mole of carbon atoms has a mass equal to its atomic mass in grams, which is 12 g for carbon.
Which of the following represent one mole quantities?
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6.023 × 10²³ atoms, 6.023 × 10²³ molecules, 22.4 L of any gas at STP
One mole equals Avogadro's number of particles (atoms or molecules) or 22.4 L of gas at STP. 1 gram is not a universal mole quantity.
The empirical formula represents:
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Simplest whole number ratio of atoms
The empirical formula shows the simplest whole number ratio of different atoms in a compound, not the actual number of atoms.
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