03. Laws of Chemical Combinations
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Some Basic Concepts of Chemistry

228754 Using Duma's method for estimating nitrogen. $1 \mathrm{~g}$ of an organic compound ' $X$ ' gave $82 \mathrm{ml}$ of nitrogen, collected at $27^{\circ} \mathrm{C}$ and $750 \mathrm{~mm} \mathrm{Hg}$ pressure. If the aqueous tension at $27^{\circ} \mathrm{C}$ is 30 $\mathrm{mm} \mathbf{H g}$ pressure, then the percentage of nitrogen in the given compound $X$ is

1 $22.09 \%$
2 $88.36 \%$
3 $44.18 \%$
4 $70.69 \%$
Shift-II
Some Basic Concepts of Chemistry

228755 Using Kjeldahl's method over $1 \mathrm{~g}$ of a soil sample, the ammonia evolved could neutralize $25 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. Then, the percentage of nitrogen present in the sample is -

1 $100 \%$
2 $60 \%$
3 $70 \%$
4 $25 \%$
AP EAPCET 20.08.2021 Shift-I
Some Basic Concepts of Chemistry

228756 In each molecule of carbon tetrachloride. the mass percent of carbon and chlorine respectively are and

1 $76.86 \& 23.14$
2 $7.84 \& 92.80$
3 $23.14 \& 76.86$
4 $78.41 \& 9.25$
Shift-I
Some Basic Concepts of Chemistry

228758 Complete combustion of $1.80 \mathrm{~g}$ of an oxygen containing compound $\left(\mathrm{C}_x \mathrm{H}_y \mathrm{O}_z\right)$ gave $2.64 \mathrm{~g}$ of $\mathrm{CO}_2$ and $1.08 \mathrm{~g}$ of $\mathrm{H}_2 \mathrm{O}$. The percentage of oxygen in the organic compound is:

1 63.53
2 53.33
3 51.63
4 50.33
Shift-I
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Some Basic Concepts of Chemistry

228754 Using Duma's method for estimating nitrogen. $1 \mathrm{~g}$ of an organic compound ' $X$ ' gave $82 \mathrm{ml}$ of nitrogen, collected at $27^{\circ} \mathrm{C}$ and $750 \mathrm{~mm} \mathrm{Hg}$ pressure. If the aqueous tension at $27^{\circ} \mathrm{C}$ is 30 $\mathrm{mm} \mathbf{H g}$ pressure, then the percentage of nitrogen in the given compound $X$ is

1 $22.09 \%$
2 $88.36 \%$
3 $44.18 \%$
4 $70.69 \%$
Shift-II
Some Basic Concepts of Chemistry

228755 Using Kjeldahl's method over $1 \mathrm{~g}$ of a soil sample, the ammonia evolved could neutralize $25 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. Then, the percentage of nitrogen present in the sample is -

1 $100 \%$
2 $60 \%$
3 $70 \%$
4 $25 \%$
AP EAPCET 20.08.2021 Shift-I
Some Basic Concepts of Chemistry

228756 In each molecule of carbon tetrachloride. the mass percent of carbon and chlorine respectively are and

1 $76.86 \& 23.14$
2 $7.84 \& 92.80$
3 $23.14 \& 76.86$
4 $78.41 \& 9.25$
Shift-I
Some Basic Concepts of Chemistry

228758 Complete combustion of $1.80 \mathrm{~g}$ of an oxygen containing compound $\left(\mathrm{C}_x \mathrm{H}_y \mathrm{O}_z\right)$ gave $2.64 \mathrm{~g}$ of $\mathrm{CO}_2$ and $1.08 \mathrm{~g}$ of $\mathrm{H}_2 \mathrm{O}$. The percentage of oxygen in the organic compound is:

1 63.53
2 53.33
3 51.63
4 50.33
Shift-I
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Some Basic Concepts of Chemistry

228754 Using Duma's method for estimating nitrogen. $1 \mathrm{~g}$ of an organic compound ' $X$ ' gave $82 \mathrm{ml}$ of nitrogen, collected at $27^{\circ} \mathrm{C}$ and $750 \mathrm{~mm} \mathrm{Hg}$ pressure. If the aqueous tension at $27^{\circ} \mathrm{C}$ is 30 $\mathrm{mm} \mathbf{H g}$ pressure, then the percentage of nitrogen in the given compound $X$ is

1 $22.09 \%$
2 $88.36 \%$
3 $44.18 \%$
4 $70.69 \%$
Shift-II
Some Basic Concepts of Chemistry

228755 Using Kjeldahl's method over $1 \mathrm{~g}$ of a soil sample, the ammonia evolved could neutralize $25 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. Then, the percentage of nitrogen present in the sample is -

1 $100 \%$
2 $60 \%$
3 $70 \%$
4 $25 \%$
AP EAPCET 20.08.2021 Shift-I
Some Basic Concepts of Chemistry

228756 In each molecule of carbon tetrachloride. the mass percent of carbon and chlorine respectively are and

1 $76.86 \& 23.14$
2 $7.84 \& 92.80$
3 $23.14 \& 76.86$
4 $78.41 \& 9.25$
Shift-I
Some Basic Concepts of Chemistry

228758 Complete combustion of $1.80 \mathrm{~g}$ of an oxygen containing compound $\left(\mathrm{C}_x \mathrm{H}_y \mathrm{O}_z\right)$ gave $2.64 \mathrm{~g}$ of $\mathrm{CO}_2$ and $1.08 \mathrm{~g}$ of $\mathrm{H}_2 \mathrm{O}$. The percentage of oxygen in the organic compound is:

1 63.53
2 53.33
3 51.63
4 50.33
Shift-I
Join With Us for More Updates
Some Basic Concepts of Chemistry

228754 Using Duma's method for estimating nitrogen. $1 \mathrm{~g}$ of an organic compound ' $X$ ' gave $82 \mathrm{ml}$ of nitrogen, collected at $27^{\circ} \mathrm{C}$ and $750 \mathrm{~mm} \mathrm{Hg}$ pressure. If the aqueous tension at $27^{\circ} \mathrm{C}$ is 30 $\mathrm{mm} \mathbf{H g}$ pressure, then the percentage of nitrogen in the given compound $X$ is

1 $22.09 \%$
2 $88.36 \%$
3 $44.18 \%$
4 $70.69 \%$
Shift-II
Some Basic Concepts of Chemistry

228755 Using Kjeldahl's method over $1 \mathrm{~g}$ of a soil sample, the ammonia evolved could neutralize $25 \mathrm{ml}$ of $1 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$. Then, the percentage of nitrogen present in the sample is -

1 $100 \%$
2 $60 \%$
3 $70 \%$
4 $25 \%$
AP EAPCET 20.08.2021 Shift-I
Some Basic Concepts of Chemistry

228756 In each molecule of carbon tetrachloride. the mass percent of carbon and chlorine respectively are and

1 $76.86 \& 23.14$
2 $7.84 \& 92.80$
3 $23.14 \& 76.86$
4 $78.41 \& 9.25$
Shift-I
Some Basic Concepts of Chemistry

228758 Complete combustion of $1.80 \mathrm{~g}$ of an oxygen containing compound $\left(\mathrm{C}_x \mathrm{H}_y \mathrm{O}_z\right)$ gave $2.64 \mathrm{~g}$ of $\mathrm{CO}_2$ and $1.08 \mathrm{~g}$ of $\mathrm{H}_2 \mathrm{O}$. The percentage of oxygen in the organic compound is:

1 63.53
2 53.33
3 51.63
4 50.33
Shift-I
For More Updates join with Us