Mole Concept and Molar Mass
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306759 Four one–litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

1 1 : 1 : 1 : 1
2 1 : 2 : 2 : 3
3 2 : 1 : 2 : 3
4 3 : 2 : 2 : 1
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306760 The number of atoms present in 0.1 mole of \({{\rm{P}}_{\rm{4}}}\) are

1 Same as in 0.2 mole of \({{\rm{S}}_{\rm{8}}}\)
2 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{22}}}}\) atoms
3 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms
4 Same as in 3.1 g of phosphorus
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306761 Assertion :
Both \(44 \mathrm{~g} \mathrm{CO}_{2}\), and \(16 \mathrm{~g} \mathrm{CH}_{4}\) have same number of carbon atoms.
Reason :
Both contain \(1 \mathrm{~g}\) atom of carbon which contains \(6.023 \times 10^{23}\) carbon atoms.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306762 How many moles of ferric alum,
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}{\rm{.F}}{{\rm{e}}_{\rm{2}}}{\left( {{\rm{S}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{.24}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) can be made from the sample of Fe containing 0.0056 g of it?

1 \({\rm{1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
2 \({\rm{0}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
3 \({\rm{0}}{\rm{.33 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
4 \({\rm{2 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306759 Four one–litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

1 1 : 1 : 1 : 1
2 1 : 2 : 2 : 3
3 2 : 1 : 2 : 3
4 3 : 2 : 2 : 1
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306760 The number of atoms present in 0.1 mole of \({{\rm{P}}_{\rm{4}}}\) are

1 Same as in 0.2 mole of \({{\rm{S}}_{\rm{8}}}\)
2 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{22}}}}\) atoms
3 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms
4 Same as in 3.1 g of phosphorus
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306761 Assertion :
Both \(44 \mathrm{~g} \mathrm{CO}_{2}\), and \(16 \mathrm{~g} \mathrm{CH}_{4}\) have same number of carbon atoms.
Reason :
Both contain \(1 \mathrm{~g}\) atom of carbon which contains \(6.023 \times 10^{23}\) carbon atoms.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306762 How many moles of ferric alum,
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}{\rm{.F}}{{\rm{e}}_{\rm{2}}}{\left( {{\rm{S}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{.24}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) can be made from the sample of Fe containing 0.0056 g of it?

1 \({\rm{1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
2 \({\rm{0}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
3 \({\rm{0}}{\rm{.33 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
4 \({\rm{2 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306759 Four one–litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

1 1 : 1 : 1 : 1
2 1 : 2 : 2 : 3
3 2 : 1 : 2 : 3
4 3 : 2 : 2 : 1
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306760 The number of atoms present in 0.1 mole of \({{\rm{P}}_{\rm{4}}}\) are

1 Same as in 0.2 mole of \({{\rm{S}}_{\rm{8}}}\)
2 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{22}}}}\) atoms
3 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms
4 Same as in 3.1 g of phosphorus
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306761 Assertion :
Both \(44 \mathrm{~g} \mathrm{CO}_{2}\), and \(16 \mathrm{~g} \mathrm{CH}_{4}\) have same number of carbon atoms.
Reason :
Both contain \(1 \mathrm{~g}\) atom of carbon which contains \(6.023 \times 10^{23}\) carbon atoms.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306762 How many moles of ferric alum,
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}{\rm{.F}}{{\rm{e}}_{\rm{2}}}{\left( {{\rm{S}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{.24}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) can be made from the sample of Fe containing 0.0056 g of it?

1 \({\rm{1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
2 \({\rm{0}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
3 \({\rm{0}}{\rm{.33 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
4 \({\rm{2 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
For More Updates join with Us
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306759 Four one–litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same room temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

1 1 : 1 : 1 : 1
2 1 : 2 : 2 : 3
3 2 : 1 : 2 : 3
4 3 : 2 : 2 : 1
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306760 The number of atoms present in 0.1 mole of \({{\rm{P}}_{\rm{4}}}\) are

1 Same as in 0.2 mole of \({{\rm{S}}_{\rm{8}}}\)
2 \({\rm{6}}{\rm{.02 \times 1}}{{\rm{0}}^{{\rm{22}}}}\) atoms
3 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{23}}}}\) atoms
4 Same as in 3.1 g of phosphorus
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306761 Assertion :
Both \(44 \mathrm{~g} \mathrm{CO}_{2}\), and \(16 \mathrm{~g} \mathrm{CH}_{4}\) have same number of carbon atoms.
Reason :
Both contain \(1 \mathrm{~g}\) atom of carbon which contains \(6.023 \times 10^{23}\) carbon atoms.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306762 How many moles of ferric alum,
\({\left( {{\rm{N}}{{\rm{H}}_{\rm{4}}}} \right)_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}{\rm{.F}}{{\rm{e}}_{\rm{2}}}{\left( {{\rm{S}}{{\rm{O}}_{\rm{4}}}} \right)_{\rm{3}}}{\rm{.24}}{{\rm{H}}_{\rm{2}}}{\rm{O}}\) can be made from the sample of Fe containing 0.0056 g of it?

1 \({\rm{1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
2 \({\rm{0}}{\rm{.5 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
3 \({\rm{0}}{\rm{.33 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
4 \({\rm{2 \times 1}}{{\rm{0}}^{{\rm{ - 4}}}}{\rm{mol}}\)
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