Laws of Chemical Combinations
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306669 The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of

1 constant proportions
2 conservation of mass
3 multiple proportions
4 reciprocal proportions
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306649 Statement A :
Under identical conditions 1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of moles
Statement B :
1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of oxygen atoms

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306650 \({\rm{10}}\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of \({{\rm{N}}_{\rm{2}}}\) gas and \({\rm{10}}\,\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of gas x at the same temperature contain the same number of molecules, the gas X is

1 \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
2 \({\rm{CO}}\)
3 \({{\rm{H}}_{\rm{2}}}\)
4 \({\rm{NO}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306651 Assertion :
Atoms can neither be created nor destroyed.
Reason :
Under similar conditions of temperature and pressure, equal volume of gases does not contain equal number of molecules.

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

306652 Statement A :
Volume of a gas is inversely proportional to the number of moles of gas.
Statement B :
The ratio by volume of gaseous reactants and products is in agreement with their mole ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306669 The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of

1 constant proportions
2 conservation of mass
3 multiple proportions
4 reciprocal proportions
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306649 Statement A :
Under identical conditions 1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of moles
Statement B :
1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of oxygen atoms

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306650 \({\rm{10}}\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of \({{\rm{N}}_{\rm{2}}}\) gas and \({\rm{10}}\,\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of gas x at the same temperature contain the same number of molecules, the gas X is

1 \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
2 \({\rm{CO}}\)
3 \({{\rm{H}}_{\rm{2}}}\)
4 \({\rm{NO}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306651 Assertion :
Atoms can neither be created nor destroyed.
Reason :
Under similar conditions of temperature and pressure, equal volume of gases does not contain equal number of molecules.

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

306652 Statement A :
Volume of a gas is inversely proportional to the number of moles of gas.
Statement B :
The ratio by volume of gaseous reactants and products is in agreement with their mole ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306669 The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of

1 constant proportions
2 conservation of mass
3 multiple proportions
4 reciprocal proportions
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306649 Statement A :
Under identical conditions 1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of moles
Statement B :
1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of oxygen atoms

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306650 \({\rm{10}}\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of \({{\rm{N}}_{\rm{2}}}\) gas and \({\rm{10}}\,\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of gas x at the same temperature contain the same number of molecules, the gas X is

1 \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
2 \({\rm{CO}}\)
3 \({{\rm{H}}_{\rm{2}}}\)
4 \({\rm{NO}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306651 Assertion :
Atoms can neither be created nor destroyed.
Reason :
Under similar conditions of temperature and pressure, equal volume of gases does not contain equal number of molecules.

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

306652 Statement A :
Volume of a gas is inversely proportional to the number of moles of gas.
Statement B :
The ratio by volume of gaseous reactants and products is in agreement with their mole ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306669 The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of

1 constant proportions
2 conservation of mass
3 multiple proportions
4 reciprocal proportions
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306649 Statement A :
Under identical conditions 1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of moles
Statement B :
1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of oxygen atoms

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306650 \({\rm{10}}\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of \({{\rm{N}}_{\rm{2}}}\) gas and \({\rm{10}}\,\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of gas x at the same temperature contain the same number of molecules, the gas X is

1 \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
2 \({\rm{CO}}\)
3 \({{\rm{H}}_{\rm{2}}}\)
4 \({\rm{NO}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306651 Assertion :
Atoms can neither be created nor destroyed.
Reason :
Under similar conditions of temperature and pressure, equal volume of gases does not contain equal number of molecules.

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

306652 Statement A :
Volume of a gas is inversely proportional to the number of moles of gas.
Statement B :
The ratio by volume of gaseous reactants and products is in agreement with their mole ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
NEET DIGITAL LIBRARY
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306669 The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of

1 constant proportions
2 conservation of mass
3 multiple proportions
4 reciprocal proportions
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306649 Statement A :
Under identical conditions 1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of moles
Statement B :
1 L of \({{\rm{O}}_{\rm{2}}}\) and 1 L of \({{\rm{O}}_{\rm{3}}}\) gas contain the same number of oxygen atoms

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306650 \({\rm{10}}\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of \({{\rm{N}}_{\rm{2}}}\) gas and \({\rm{10}}\,\,{\rm{d}}{{\rm{m}}^{\rm{3}}}\) of gas x at the same temperature contain the same number of molecules, the gas X is

1 \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
2 \({\rm{CO}}\)
3 \({{\rm{H}}_{\rm{2}}}\)
4 \({\rm{NO}}\)
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306651 Assertion :
Atoms can neither be created nor destroyed.
Reason :
Under similar conditions of temperature and pressure, equal volume of gases does not contain equal number of molecules.

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

306652 Statement A :
Volume of a gas is inversely proportional to the number of moles of gas.
Statement B :
The ratio by volume of gaseous reactants and products is in agreement with their mole ratio.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.