1 g of magnesium is burnt with 0.56g of oxygen in a closed vessel. The left-out reactant and its quantity are

(At. weight of Mg = 24, O=16)

1. Mg, 0.16g 2. O2, 0.16g
3. Mg, 0.44g 4. O2, 0.28g

Subtopic:  Equation Based Problem |
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If 10 volumes of H2 gas react with 5 volumes of O2 gas, the volumes of water vapor produced would be:

1. 9

2. 8

3. 10

4. 11

Subtopic:  Equation Based Problem |
 88%
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To produce 20 moles of ammonia via Haber's process, how many moles of hydrogen molecules are required?

1. 40 mol 2. 10 mol
3. 20 mol 4. 30 mol
Subtopic:  Limiting Reagent | Equation Based Problem |
 80%
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NEET - 2019
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The volume of oxygen gas (O2) needed to completely burn 1 L of propane gas (C3H8)  (both O& propane measured at 0°C and 1 atm) will be:
1. 7 L
2. 6 L
3. 5 L
4. 10 L

Subtopic:  Equation Based Problem |
 77%
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AIPMT - 2008
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10 g of a silver coin, when dissolved completely in excess of conc. HNO3 gives 8.5 g of silver nitrate.
The percentage purity of the coin is:
(Molar mass of silver is 108g)
 

1. 25% 2. 54%
3. 67% 4. 100%
Subtopic:  Equation Based Problem |
 65%
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In the reaction, 4NH3(g)+ 5O2(g) 4NO(g) +6H2O(l)

When 1 mole of ammonia and 1 mole of O2  reacts to completion, then:

1. 1.0 mole of H2O is produced. 
2. 1.0 mole of NO will be produced.
3. All the oxygen will be consumed.
4. All the ammonia will be consumed.

Subtopic:  Equation Based Problem |
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Consider the given reaction, 2SO2 + O2 2SO

6.4 g SO2 and 3.2 g O2 to form SO3 . The mass of SO3 formed is:  

1. 32 g
2. 16 g
3. 8 g
4. 4 g

Subtopic:  Equation Based Problem |
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Amount of HCl that would react with 5.0 g of manganese dioxide, as per the
given reaction will be:

4HCl(aq) + MnO2(s) ➡ 2H2O(l) + MnCl2(aq) + Cl2(2)

1. 4.8 g

2. 6.4 g

3. 2.8 g

4. 8.4 g

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When 100 mL of PH3 is decomposed, it produces phosphorus and hydrogen. The change in volume is:

1. 50  mL increase. 2. 500 mL decrease.
3. 900 mL decrease. 4. None of the above.

Subtopic:  Equation Based Problem |
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Assertion (A): When 4 moles of H2 reacts with 2 moles of O2, then 4 moles of water are formed.
Reason (R): O2 will act as a limiting reagent.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.

Subtopic:  Equation Based Problem |
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