05. Stoichiometry Calculation
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Some Basic Concepts of Chemistry

228881 Gas ' $\mathrm{X}$ ' is obtained on heating $\mathrm{KClO}_3$ with catalyst $\mathrm{MnO}_2$. This gas (in excess) on reaction with white phosphorus forms as acidic oxide ' $Y^{\prime}$. ' $Y^{\prime}$ on dissolving in water forms a compound ' $Z$ '. Identify $X, Y$ and $Z$.

1 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
2 $\mathrm{O}_3, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
3 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_3, \mathrm{H}_3 \mathrm{PO}_3$
4 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_3$
Shift-I
Some Basic Concepts of Chemistry

228882 What are the fractions of $\mathrm{Fe}^{2+}$ and $\mathrm{Fe}^{3+}$ in $\mathrm{Fe}_{0.93} \mathrm{O}$ respectively?

1 $0.93,0.07$
2 $0.85,0.15$
3 $0.75,0.25$
4 $0.80,0.20$
GUJCET-2020
Some Basic Concepts of Chemistry

228883 An organic compound contains $24 \%$ carbon, $4 \%$ hydrogen and remaining chlorine. Its empirical formula is

1 $\mathrm{CHCl}$
2 $\mathrm{CH}_2 \mathrm{Cl}$
3 $\mathrm{CHCl}_2$
4 $\mathrm{CH}_2 \mathrm{Cl}$
5 $\mathrm{CH}_2 \mathrm{Cl}_2$
Kerala-CEE-2020
Some Basic Concepts of Chemistry

228884 The amount of calcium carbonate that reacts with 500 cc of $0.5 \mathrm{~N}$ hydrochloric acid is

1 $150 \mathrm{~g}$
2 $125 \mathrm{~g}$
3 $12.5 \mathrm{~g}$
4 $100 \mathrm{~g}$
COMEDK-2019
For More Updates join with Us
Some Basic Concepts of Chemistry

228881 Gas ' $\mathrm{X}$ ' is obtained on heating $\mathrm{KClO}_3$ with catalyst $\mathrm{MnO}_2$. This gas (in excess) on reaction with white phosphorus forms as acidic oxide ' $Y^{\prime}$. ' $Y^{\prime}$ on dissolving in water forms a compound ' $Z$ '. Identify $X, Y$ and $Z$.

1 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
2 $\mathrm{O}_3, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
3 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_3, \mathrm{H}_3 \mathrm{PO}_3$
4 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_3$
Shift-I
Some Basic Concepts of Chemistry

228882 What are the fractions of $\mathrm{Fe}^{2+}$ and $\mathrm{Fe}^{3+}$ in $\mathrm{Fe}_{0.93} \mathrm{O}$ respectively?

1 $0.93,0.07$
2 $0.85,0.15$
3 $0.75,0.25$
4 $0.80,0.20$
GUJCET-2020
Some Basic Concepts of Chemistry

228883 An organic compound contains $24 \%$ carbon, $4 \%$ hydrogen and remaining chlorine. Its empirical formula is

1 $\mathrm{CHCl}$
2 $\mathrm{CH}_2 \mathrm{Cl}$
3 $\mathrm{CHCl}_2$
4 $\mathrm{CH}_2 \mathrm{Cl}$
5 $\mathrm{CH}_2 \mathrm{Cl}_2$
Kerala-CEE-2020
Some Basic Concepts of Chemistry

228884 The amount of calcium carbonate that reacts with 500 cc of $0.5 \mathrm{~N}$ hydrochloric acid is

1 $150 \mathrm{~g}$
2 $125 \mathrm{~g}$
3 $12.5 \mathrm{~g}$
4 $100 \mathrm{~g}$
COMEDK-2019
NEET DIGITAL LIBRARY
Some Basic Concepts of Chemistry

228881 Gas ' $\mathrm{X}$ ' is obtained on heating $\mathrm{KClO}_3$ with catalyst $\mathrm{MnO}_2$. This gas (in excess) on reaction with white phosphorus forms as acidic oxide ' $Y^{\prime}$. ' $Y^{\prime}$ on dissolving in water forms a compound ' $Z$ '. Identify $X, Y$ and $Z$.

1 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
2 $\mathrm{O}_3, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
3 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_3, \mathrm{H}_3 \mathrm{PO}_3$
4 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_3$
Shift-I
Some Basic Concepts of Chemistry

228882 What are the fractions of $\mathrm{Fe}^{2+}$ and $\mathrm{Fe}^{3+}$ in $\mathrm{Fe}_{0.93} \mathrm{O}$ respectively?

1 $0.93,0.07$
2 $0.85,0.15$
3 $0.75,0.25$
4 $0.80,0.20$
GUJCET-2020
Some Basic Concepts of Chemistry

228883 An organic compound contains $24 \%$ carbon, $4 \%$ hydrogen and remaining chlorine. Its empirical formula is

1 $\mathrm{CHCl}$
2 $\mathrm{CH}_2 \mathrm{Cl}$
3 $\mathrm{CHCl}_2$
4 $\mathrm{CH}_2 \mathrm{Cl}$
5 $\mathrm{CH}_2 \mathrm{Cl}_2$
Kerala-CEE-2020
Some Basic Concepts of Chemistry

228884 The amount of calcium carbonate that reacts with 500 cc of $0.5 \mathrm{~N}$ hydrochloric acid is

1 $150 \mathrm{~g}$
2 $125 \mathrm{~g}$
3 $12.5 \mathrm{~g}$
4 $100 \mathrm{~g}$
COMEDK-2019
Join With Us for More Updates
Some Basic Concepts of Chemistry

228881 Gas ' $\mathrm{X}$ ' is obtained on heating $\mathrm{KClO}_3$ with catalyst $\mathrm{MnO}_2$. This gas (in excess) on reaction with white phosphorus forms as acidic oxide ' $Y^{\prime}$. ' $Y^{\prime}$ on dissolving in water forms a compound ' $Z$ '. Identify $X, Y$ and $Z$.

1 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
2 $\mathrm{O}_3, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_4$
3 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_3, \mathrm{H}_3 \mathrm{PO}_3$
4 $\mathrm{O}_2, \mathrm{P}_2 \mathrm{O}_5, \mathrm{H}_3 \mathrm{PO}_3$
Shift-I
Some Basic Concepts of Chemistry

228882 What are the fractions of $\mathrm{Fe}^{2+}$ and $\mathrm{Fe}^{3+}$ in $\mathrm{Fe}_{0.93} \mathrm{O}$ respectively?

1 $0.93,0.07$
2 $0.85,0.15$
3 $0.75,0.25$
4 $0.80,0.20$
GUJCET-2020
Some Basic Concepts of Chemistry

228883 An organic compound contains $24 \%$ carbon, $4 \%$ hydrogen and remaining chlorine. Its empirical formula is

1 $\mathrm{CHCl}$
2 $\mathrm{CH}_2 \mathrm{Cl}$
3 $\mathrm{CHCl}_2$
4 $\mathrm{CH}_2 \mathrm{Cl}$
5 $\mathrm{CH}_2 \mathrm{Cl}_2$
Kerala-CEE-2020
Some Basic Concepts of Chemistry

228884 The amount of calcium carbonate that reacts with 500 cc of $0.5 \mathrm{~N}$ hydrochloric acid is

1 $150 \mathrm{~g}$
2 $125 \mathrm{~g}$
3 $12.5 \mathrm{~g}$
4 $100 \mathrm{~g}$
COMEDK-2019
For More Updates join with Us