Quantitative Analysis
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317535 In an organic compound, phosphorus is estimated as

1 \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{H}_{3} \mathrm{PO}_{4}\)
4 \(\mathrm{P}_{2} \mathrm{O}_{5}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317536 \(2.79 \mathrm{~g}\) of an organic compound when heated in Carius tube with conc. \(\mathrm{HNO}_{3}\) and \(\mathrm{H}_{3} \mathrm{PO}_{4}\) formed converted into \({\rm{MgN}}{{\rm{H}}_{\rm{4}}}{\rm{.P}}{{\rm{O}}_{\rm{4}}}\,\,{\rm{ppt}}\). The ppt. on heating gave \(1.332 \mathrm{~g}\) of \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\). The percentage of \(\mathrm{P}\) in the compound is

1 23.33
2 13.33
3 33.33
4 26.66
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317537 0.25 g of an organic substance in a quantitative analysis yielded 0.5 g of the barium sulphate. The percentage of sulphur in the substance is ____.
(Molecular mass of \({\mathrm{\mathrm{BaSO}_{4}=233 \mathrm{~g} \mathrm{~mol}^{-1}}}\) )

1 27.47
2 85.75
3 0.55
4 67.55
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317538 Statement A :
Sulphur present in an organic compound can be estimated quantitatively by Carius method.
Statement B :
Sulphur is separated easily from other atoms in the molecule and gets precipitated as light yellow solid.

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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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317535 In an organic compound, phosphorus is estimated as

1 \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{H}_{3} \mathrm{PO}_{4}\)
4 \(\mathrm{P}_{2} \mathrm{O}_{5}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317536 \(2.79 \mathrm{~g}\) of an organic compound when heated in Carius tube with conc. \(\mathrm{HNO}_{3}\) and \(\mathrm{H}_{3} \mathrm{PO}_{4}\) formed converted into \({\rm{MgN}}{{\rm{H}}_{\rm{4}}}{\rm{.P}}{{\rm{O}}_{\rm{4}}}\,\,{\rm{ppt}}\). The ppt. on heating gave \(1.332 \mathrm{~g}\) of \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\). The percentage of \(\mathrm{P}\) in the compound is

1 23.33
2 13.33
3 33.33
4 26.66
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317537 0.25 g of an organic substance in a quantitative analysis yielded 0.5 g of the barium sulphate. The percentage of sulphur in the substance is ____.
(Molecular mass of \({\mathrm{\mathrm{BaSO}_{4}=233 \mathrm{~g} \mathrm{~mol}^{-1}}}\) )

1 27.47
2 85.75
3 0.55
4 67.55
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317538 Statement A :
Sulphur present in an organic compound can be estimated quantitatively by Carius method.
Statement B :
Sulphur is separated easily from other atoms in the molecule and gets precipitated as light yellow solid.

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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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317535 In an organic compound, phosphorus is estimated as

1 \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{H}_{3} \mathrm{PO}_{4}\)
4 \(\mathrm{P}_{2} \mathrm{O}_{5}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317536 \(2.79 \mathrm{~g}\) of an organic compound when heated in Carius tube with conc. \(\mathrm{HNO}_{3}\) and \(\mathrm{H}_{3} \mathrm{PO}_{4}\) formed converted into \({\rm{MgN}}{{\rm{H}}_{\rm{4}}}{\rm{.P}}{{\rm{O}}_{\rm{4}}}\,\,{\rm{ppt}}\). The ppt. on heating gave \(1.332 \mathrm{~g}\) of \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\). The percentage of \(\mathrm{P}\) in the compound is

1 23.33
2 13.33
3 33.33
4 26.66
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317537 0.25 g of an organic substance in a quantitative analysis yielded 0.5 g of the barium sulphate. The percentage of sulphur in the substance is ____.
(Molecular mass of \({\mathrm{\mathrm{BaSO}_{4}=233 \mathrm{~g} \mathrm{~mol}^{-1}}}\) )

1 27.47
2 85.75
3 0.55
4 67.55
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317538 Statement A :
Sulphur present in an organic compound can be estimated quantitatively by Carius method.
Statement B :
Sulphur is separated easily from other atoms in the molecule and gets precipitated as light yellow solid.

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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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317535 In an organic compound, phosphorus is estimated as

1 \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{H}_{3} \mathrm{PO}_{4}\)
4 \(\mathrm{P}_{2} \mathrm{O}_{5}\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317536 \(2.79 \mathrm{~g}\) of an organic compound when heated in Carius tube with conc. \(\mathrm{HNO}_{3}\) and \(\mathrm{H}_{3} \mathrm{PO}_{4}\) formed converted into \({\rm{MgN}}{{\rm{H}}_{\rm{4}}}{\rm{.P}}{{\rm{O}}_{\rm{4}}}\,\,{\rm{ppt}}\). The ppt. on heating gave \(1.332 \mathrm{~g}\) of \(\mathrm{Mg}_{2} \mathrm{P}_{2} \mathrm{O}_{7}\). The percentage of \(\mathrm{P}\) in the compound is

1 23.33
2 13.33
3 33.33
4 26.66
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317537 0.25 g of an organic substance in a quantitative analysis yielded 0.5 g of the barium sulphate. The percentage of sulphur in the substance is ____.
(Molecular mass of \({\mathrm{\mathrm{BaSO}_{4}=233 \mathrm{~g} \mathrm{~mol}^{-1}}}\) )

1 27.47
2 85.75
3 0.55
4 67.55
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317538 Statement A :
Sulphur present in an organic compound can be estimated quantitatively by Carius method.
Statement B :
Sulphur is separated easily from other atoms in the molecule and gets precipitated as light yellow solid.

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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