Laws of Chemical Combinations
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306679 Hydrogen and oxygen combine to form \(\mathrm{\mathrm{H}_{2} \mathrm{O}_{2}}\) and \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) containing \(\mathrm{5.93 \%}\) and \(\mathrm{11.2 \%}\) hydrogen respectively, the data illustrates:

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

306680 Assertion :
A certain element \({\text{X}}\), forms three binary compounds with chlorine containing \(59.68 \%, 68.95 \%\) and \(74.75 \%\) chlorine respectively.These data illustrate the law of multiple proportion.
Reason :
According to law of multiple proportions. the relative amounts of an element combining with some fixed amount of a second element in a series of compounds are the ratios of small whole numbers.

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

306681 The law of multiple proportions is illustrated by the pair of compounds:

1 Sodium chloride and sodium bromide
2 Water and heavy water
3 Sulphur dioxide and sulphur trioxide
4 Magnesium oxide and magnesium chloride
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306682 Which of the following statements indicates that law of multiple proporiton is being followed?

1 Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2
2 Carbon forms two oxides i.e., \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{CO}}\), where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2:1
3 When magnesium burns in oxygen, the amount of magnesium taken for the reactions is equal to the amount of magnesium in magnesium oxide formed.
4 At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306683 Among the following pairs of compounds, the one that illustrates the law of multiple proportions is

1 \({\rm{N}}{{\rm{H}}_{\rm{3}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{NC}}{{\rm{l}}_{\rm{3}}}\)
2 \({{\rm{H}}_{\rm{2}}}{\rm{S}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{S}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{CuO}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{C}}{{\rm{u}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306679 Hydrogen and oxygen combine to form \(\mathrm{\mathrm{H}_{2} \mathrm{O}_{2}}\) and \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) containing \(\mathrm{5.93 \%}\) and \(\mathrm{11.2 \%}\) hydrogen respectively, the data illustrates:

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

306680 Assertion :
A certain element \({\text{X}}\), forms three binary compounds with chlorine containing \(59.68 \%, 68.95 \%\) and \(74.75 \%\) chlorine respectively.These data illustrate the law of multiple proportion.
Reason :
According to law of multiple proportions. the relative amounts of an element combining with some fixed amount of a second element in a series of compounds are the ratios of small whole numbers.

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

306681 The law of multiple proportions is illustrated by the pair of compounds:

1 Sodium chloride and sodium bromide
2 Water and heavy water
3 Sulphur dioxide and sulphur trioxide
4 Magnesium oxide and magnesium chloride
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306682 Which of the following statements indicates that law of multiple proporiton is being followed?

1 Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2
2 Carbon forms two oxides i.e., \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{CO}}\), where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2:1
3 When magnesium burns in oxygen, the amount of magnesium taken for the reactions is equal to the amount of magnesium in magnesium oxide formed.
4 At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306683 Among the following pairs of compounds, the one that illustrates the law of multiple proportions is

1 \({\rm{N}}{{\rm{H}}_{\rm{3}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{NC}}{{\rm{l}}_{\rm{3}}}\)
2 \({{\rm{H}}_{\rm{2}}}{\rm{S}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{S}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{CuO}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{C}}{{\rm{u}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306679 Hydrogen and oxygen combine to form \(\mathrm{\mathrm{H}_{2} \mathrm{O}_{2}}\) and \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) containing \(\mathrm{5.93 \%}\) and \(\mathrm{11.2 \%}\) hydrogen respectively, the data illustrates:

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

306680 Assertion :
A certain element \({\text{X}}\), forms three binary compounds with chlorine containing \(59.68 \%, 68.95 \%\) and \(74.75 \%\) chlorine respectively.These data illustrate the law of multiple proportion.
Reason :
According to law of multiple proportions. the relative amounts of an element combining with some fixed amount of a second element in a series of compounds are the ratios of small whole numbers.

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

306681 The law of multiple proportions is illustrated by the pair of compounds:

1 Sodium chloride and sodium bromide
2 Water and heavy water
3 Sulphur dioxide and sulphur trioxide
4 Magnesium oxide and magnesium chloride
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306682 Which of the following statements indicates that law of multiple proporiton is being followed?

1 Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2
2 Carbon forms two oxides i.e., \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{CO}}\), where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2:1
3 When magnesium burns in oxygen, the amount of magnesium taken for the reactions is equal to the amount of magnesium in magnesium oxide formed.
4 At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306683 Among the following pairs of compounds, the one that illustrates the law of multiple proportions is

1 \({\rm{N}}{{\rm{H}}_{\rm{3}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{NC}}{{\rm{l}}_{\rm{3}}}\)
2 \({{\rm{H}}_{\rm{2}}}{\rm{S}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{S}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{CuO}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{C}}{{\rm{u}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306679 Hydrogen and oxygen combine to form \(\mathrm{\mathrm{H}_{2} \mathrm{O}_{2}}\) and \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) containing \(\mathrm{5.93 \%}\) and \(\mathrm{11.2 \%}\) hydrogen respectively, the data illustrates:

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

306680 Assertion :
A certain element \({\text{X}}\), forms three binary compounds with chlorine containing \(59.68 \%, 68.95 \%\) and \(74.75 \%\) chlorine respectively.These data illustrate the law of multiple proportion.
Reason :
According to law of multiple proportions. the relative amounts of an element combining with some fixed amount of a second element in a series of compounds are the ratios of small whole numbers.

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

306681 The law of multiple proportions is illustrated by the pair of compounds:

1 Sodium chloride and sodium bromide
2 Water and heavy water
3 Sulphur dioxide and sulphur trioxide
4 Magnesium oxide and magnesium chloride
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306682 Which of the following statements indicates that law of multiple proporiton is being followed?

1 Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2
2 Carbon forms two oxides i.e., \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{CO}}\), where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2:1
3 When magnesium burns in oxygen, the amount of magnesium taken for the reactions is equal to the amount of magnesium in magnesium oxide formed.
4 At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306683 Among the following pairs of compounds, the one that illustrates the law of multiple proportions is

1 \({\rm{N}}{{\rm{H}}_{\rm{3}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{NC}}{{\rm{l}}_{\rm{3}}}\)
2 \({{\rm{H}}_{\rm{2}}}{\rm{S}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{S}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{CuO}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{C}}{{\rm{u}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)
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CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306679 Hydrogen and oxygen combine to form \(\mathrm{\mathrm{H}_{2} \mathrm{O}_{2}}\) and \(\mathrm{\mathrm{H}_{2} \mathrm{O}}\) containing \(\mathrm{5.93 \%}\) and \(\mathrm{11.2 \%}\) hydrogen respectively, the data illustrates:

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

306680 Assertion :
A certain element \({\text{X}}\), forms three binary compounds with chlorine containing \(59.68 \%, 68.95 \%\) and \(74.75 \%\) chlorine respectively.These data illustrate the law of multiple proportion.
Reason :
According to law of multiple proportions. the relative amounts of an element combining with some fixed amount of a second element in a series of compounds are the ratios of small whole numbers.

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

306681 The law of multiple proportions is illustrated by the pair of compounds:

1 Sodium chloride and sodium bromide
2 Water and heavy water
3 Sulphur dioxide and sulphur trioxide
4 Magnesium oxide and magnesium chloride
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306682 Which of the following statements indicates that law of multiple proporiton is being followed?

1 Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1:2
2 Carbon forms two oxides i.e., \({\rm{C}}{{\rm{O}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{CO}}\), where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2:1
3 When magnesium burns in oxygen, the amount of magnesium taken for the reactions is equal to the amount of magnesium in magnesium oxide formed.
4 At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour.
CHXI01:SOME BASIC CONCEPTS OF CHEMISTRY

306683 Among the following pairs of compounds, the one that illustrates the law of multiple proportions is

1 \({\rm{N}}{{\rm{H}}_{\rm{3}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{NC}}{{\rm{l}}_{\rm{3}}}\)
2 \({{\rm{H}}_{\rm{2}}}{\rm{S}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{S}}{{\rm{O}}_{\rm{2}}}\)
3 \({\rm{CuO}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{C}}{{\rm{u}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{C}}{{\rm{S}}_{\rm{2}}}{\mkern 1mu} {\mkern 1mu} {\rm{and}}{\mkern 1mu} {\mkern 1mu} {\rm{FeS}}{{\rm{O}}_{\rm{4}}}\)