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Q. No.Calculate the molarity of NaCl solution, if 5.85 gm of NaCl is dissolved in 500 ml of solution.
1. 0.1 M
2. 0.2 M
3. 0.32 M
4. 0.4 M
Subtopic: Concentration Based Problem |
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x g of ethylamine on reaction with NaNO2 and HCl, produces 2.24 L of N2(g) at NTP. The value of 2x will be:
1. 8
2. 6
3. 0
4. 9
1. 8
2. 6
3. 0
4. 9
Subtopic: Concentration Based Problem |
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Which of the following statements is incorrect?
| 1. | In a homogeneous mixture, the composition is uniform. |
| 2. | Compounds are formed when atoms of different elements combine together in any ratio. |
| 3. | Atoms of the same element have identical atomic mass and properties. |
| 4. | In a heterogeneous mixture, the composition is not uniform. |
Subtopic: Introduction |
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Consider the following combustion reaction:
\(\mathrm{CH}_4+\mathrm{O}_2 \longrightarrow \mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}\)
How many moles of methane (\(\mathrm{CH_4}\)) will be required for the formation of 11 g of carbon dioxide (\(\mathrm{CO_2}\))?
\(\mathrm{CH}_4+\mathrm{O}_2 \longrightarrow \mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}\)
How many moles of methane (\(\mathrm{CH_4}\)) will be required for the formation of 11 g of carbon dioxide (\(\mathrm{CO_2}\))?
| 1. | 0.25 | 2. | 0.62 |
| 3. | 0.17 | 4. | 1.23 |
Subtopic: Equation Based Problem |
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If \(\mathrm{C}=42.1 \%, \mathrm{H}=6.4 \%, \mathrm{O}=52.5 \%\) and molar mass is \(342~\text{g/mol},\) then the molecular formula of that compound is:
1. \(\mathrm{C}_{11} \mathrm{H}_{22} \mathrm{O}_{12}\)
2. \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\)
3. \(\mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}_{11}\)
4. \(\mathrm{C}_{11} \mathrm{H}_{22} \mathrm{O}_{11}\)
1. \(\mathrm{C}_{11} \mathrm{H}_{22} \mathrm{O}_{12}\)
2. \(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\)
3. \(\mathrm{C}_{10} \mathrm{H}_{20} \mathrm{O}_{11}\)
4. \(\mathrm{C}_{11} \mathrm{H}_{22} \mathrm{O}_{11}\)
Subtopic: Empirical & Molecular Formula |
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We are provided with the graph depicting the relationship between pressure (P) and temperature (T).
Choose the correct option:
1. \(\rho_1>\rho_2>\rho_3 \)
2. \(\rho_1<\rho_2<\rho_3 \)
3. \(\rho_1=\rho_2=\rho_3 \)
4. \(\rho_2>\rho_1>\rho_3\)
Choose the correct option:
1. \(\rho_1>\rho_2>\rho_3 \)
2. \(\rho_1<\rho_2<\rho_3 \)
3. \(\rho_1=\rho_2=\rho_3 \)
4. \(\rho_2>\rho_1>\rho_3\)
Subtopic: Concentration Based Problem |
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Find the mass (in g) of \(\mathrm{O}_2\) required for the complete combustion of 900 g glucose.
1. 960
2. 800
3. 500
4. 780
1. 960
2. 800
3. 500
4. 780
Subtopic: Equation Based Problem |
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Molality of aqueous solution of urea is 4.44 m. Then mole fraction of urea is \(x \times 10^{-3}.\)
The value of \(\mathrm{x}\) is:
1. 67
2. 74
3. 93
4. 87
The value of \(\mathrm{x}\) is:
1. 67
2. 74
3. 93
4. 87
Subtopic: Concentration Based Problem |
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Moles of \(\text{CH}_4\) required for the formation of 22 gm of \(\text{CO}_2\) is \(\text{m}\times10^{-2}.\)
The value of m is:
1. 50
2. 67
3. 90
4. 78
The value of m is:
1. 50
2. 67
3. 90
4. 78
Subtopic: Moles, Atoms & Electrons |
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Calculate mass of CH4 consumed for the formation of 22 g CO2.
CH4 + 2O2 → CO2 + 2H2O
1. 8
2. 1
3. 9
4. 7
CH4 + 2O2 → CO2 + 2H2O
1. 8
2. 1
3. 9
4. 7
Subtopic: Equation Based Problem |
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