Q. No.A 14.0 g sample of calcium metal reacts completely with excess hydrochloric acid (HCl) at 273 K and 1 atm pressure.
Which of the following statements regarding the reaction is incorrect?
Given: Molar masses: Ca = 40 g mol⁻¹, Cl = 35.5 g mol⁻¹
1. 0.35 mol of H₂ gas is evolved.
2. Calcium acts as the limiting reagent.
3. 33.3 g of CaCl₂ is formed.
4. 7.84 L of H₂ gas is evolved.
Subtopic: Limiting Reagent | Equation Based Problem |
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Level 2: 60%+
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For the reaction:
\(Cl_2 + KOH \rightarrow KCl + KClO + H_2O\)
1 mole of \(Cl_2\) passed into 2 litre, 2M solution of KOH. Determine the molarity of \(Cl^-, ClO^-\) and \(OH^-\) respectively.
1. 1 M, 0.5 M, 0.5 M
2. 0.5 M, 0.5 M, 1 M
3. 1 M, 1 M, 0.5 M
4. 0.5 M, 1 M, 0.5 M
\(Cl_2 + KOH \rightarrow KCl + KClO + H_2O\)
1 mole of \(Cl_2\) passed into 2 litre, 2M solution of KOH. Determine the molarity of \(Cl^-, ClO^-\) and \(OH^-\) respectively.
1. 1 M, 0.5 M, 0.5 M
2. 0.5 M, 0.5 M, 1 M
3. 1 M, 1 M, 0.5 M
4. 0.5 M, 1 M, 0.5 M
Subtopic: Moles, Atoms & Electrons | Concentration Based Problem | Equation Based Problem |
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36 g of A reacts with 56 g of B to form AB₂ according to the following reaction:
A + 2B → AB₂ . Which of the following statements is correct?
(Given: Molar mass of A = 60 g mol⁻¹ and molar mass of B = 80 g mol⁻¹)1. The molecular mass of AB₂ is 140 g mol⁻¹.
2. A is the limiting reagent.
3. 15 gm of A remains unreacted.
4. The mass of AB₂ formed is 132 g.
Subtopic: Moles, Atoms & Electrons | Limiting Reagent | Equation Based Problem |
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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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Level 1: 80%+
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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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Methane reacts with oxygen according to the following chemical equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
Calculate the mass of methane required to produce 22 g of carbon dioxide:
1. Eight (8)
2. One (1)
3. Nine (9)
4. Seven (7)
Subtopic: Equation Based Problem |
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A sample of 9.3 g of aniline is completely acetylated using excess acetic anhydride. The mass of acetanilide formed is m g. Find the value of 2m.
1. 27
2. 0
3. 17
4. 10
1. 27
2. 0
3. 17
4. 10
Subtopic: Equation Based Problem |
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Consider a mixture of CH4 and C2H4 having a volume of 16.8 L at 273 K and 1 atm. It undergoes combustion to form CO2 with a total volume of 28 L at the same temperature and pressure.
If the enthalpies of combustion of CH4 and C2H4 are -900 kJ/mol and -1400 kJ/mol respectively, then the magnitude of heat released on combustion of the given mixture in kJ is:
1. 875 kJ
2. 925 kJ
3. 945 kJ
4. 900 kJ
If the enthalpies of combustion of CH4 and C2H4 are -900 kJ/mol and -1400 kJ/mol respectively, then the magnitude of heat released on combustion of the given mixture in kJ is:
1. 875 kJ
2. 925 kJ
3. 945 kJ
4. 900 kJ
Subtopic: Equation Based Problem |
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For a given hydrocarbon, 11 moles of O2 is used and produces 4 moles of H2O. The formula of hydrocarbon is:
1. C11H8
2. C9H8
3. C11H16
4. C6H14
1. C11H8
2. C9H8
3. C11H16
4. C6H14
Subtopic: Equation Based Problem |
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\(C_{15}H_{30}\) is used as rocket fuel. The masses of oxygen used and \(CO_2\) produced per litre of consumption of \(C_{15}H_{30}\), respectively, are:
(Given: Density of \(C_{15}H_{30} \) = 0.756 gram/ml)
1. 2592 gram, 2376 gram
2. 2376 gram, 2592 gram
3. 2592 gram, 2868 gram
4. 2868 gram, 2776 gram
(Given: Density of \(C_{15}H_{30} \) = 0.756 gram/ml)
1. 2592 gram, 2376 gram
2. 2376 gram, 2592 gram
3. 2592 gram, 2868 gram
4. 2868 gram, 2776 gram
Subtopic: Equation Based Problem |
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Level 3: 35%-60%
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