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Q. No.A compound has a composition of 8.64% hydrogen, 74% carbon, and 17.36% nitrogen by mass, with a molecular mass of 162 g/mol. Which of the following could be the compound?
1. C5H7N
2. C10H14N2
3. C4H6N2
4. C2H3N
Subtopic: Empirical & Molecular Formula |
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If 0.02 moles of H2SO4 are present in 1 litre of solution from which 50% solution is taken out and again diluted up to 1 litre by adding water. Further, if 0.01 moles of H2SO4 are added, then the total millimoles of H2SO4 in the resulting solution will be:
1. 10
2. 5
3. 20
4. 15
1. 10
2. 5
3. 20
4. 15
Subtopic: Concentration Based Problem |
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Given 645 g of a compound \(C_6H_5N_3O_6\) . The number of N atoms present in this compound is:
Report x if your answer is \(x \times 10^{21} \)
\((C=12, H=1, N=14, O=16)\left(N_{A}=6.02 \times 10^{23}\right) \)
1. 5418
2. 5671
3. 5212
4. 5781
Subtopic: Moles, Atoms & Electrons |
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CNG is an important transportation fuel. When 100 g CNG is mixed with 208 g oxygen in vehicles, it leads to the formation of CO2 and H2O and produces a large quality of heat during this combustion, then the amount of carbon dioxide, produced in grams is- [nearest integer]
[Assume CNG to be methane]
1. 148 g
2. 157 g
3. 143 g
4. 153 g
[Assume CNG to be methane]
1. 148 g
2. 157 g
3. 143 g
4. 153 g
Subtopic: Equation Based Problem |
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The moles of methane required to produce 81 g of water after complete combustion is A× 10-2 mol. The value of A is:
[nearest integer]
[nearest integer]
| 1. | 240 | 2. | 225 |
| 3. | 204 | 4. | 198 |
Subtopic: Equation Based Problem |
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5 grams of pent-1-ene react with how many grams of \(Br_2 \) completely?
| 1. | 13.4 g | 2. | 9.4 g |
| 3. | 11.4 g | 4. | 15.8 g |
Subtopic: Equation Based Problem |
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0.1 M, 10 ml of an acid 'A' gets completely neutralized by 0.05 M, 20 ml of base \(M(OH)_2 \) . The basicity of acid 'A' is:
(here M is metal)
1. 4
2. 3
3. 2
4. 1
(here M is metal)
1. 4
2. 3
3. 2
4. 1
Subtopic: Equation Based Problem |
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The glycine content of a protein is 0.3%. What is the minimum mass of protein?
[Molecular weight of Glycine = 75]
1. 26000
2. 30000
3. 25000
4. 28000
[Molecular weight of Glycine = 75]
1. 26000
2. 30000
3. 25000
4. 28000
Subtopic: Moles, Atoms & Electrons |
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The number of moles of methane required for the combustion process to yield 81 grams of water is:
1. 2.25 mole
2. 4.5 mole
3. 9 mole
4. 1.125 mole
1. 2.25 mole
2. 4.5 mole
3. 9 mole
4. 1.125 mole
Subtopic: Equation Based Problem |
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6.1 gram of CNG on combustion with 208 grams of O2(g) produces, CO2(g) & H2O with a lot of heat. The amount of CO2 produced in grams is:
[Consider CNG as methane and report your answer to the nearest integer].
1. 15 g
2. 19 g
3. 17 g
4. 21 g
[Consider CNG as methane and report your answer to the nearest integer].
1. 15 g
2. 19 g
3. 17 g
4. 21 g
Subtopic: Equation Based Problem |
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