The amount of Zinc (atomic weight=65) necessary to produce 224 mL of H2 (at STP) by the reaction with dilute sulphuric acid will be: 

1. 0.65 g 2. 7.6 g
3. 6.5 g 4. 8.5 g
Subtopic:  Limiting Reagent |
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On complete decomposition, the volume of CO2 released at STP on heating 9.85 g of BaCO3 (atomic mass, Ba=137) will be: 

1. 1.12 L

2. 4.84 L

3. 2.12 L

4. 2.06 L

Subtopic:  Limiting Reagent |
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Assertion (A): In Haber's process, starting with 5 moles of N2 and 2.5 mol of H2, on complete reaction only 1.66 moles of  NH3 were produced.
Reason (R): H2 acts as a limiting reagent in this reaction. 

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:  Limiting Reagent |
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When 22.4 L of H2 (g) is mixed with 11.2 L of Cl2 (g), each at STP, the moles of HCl(g) formed is equal to -

1. 1 mole of HCl (g) 2. 2 moles of HCl (g)
3. 0.5 mole of HCl (g) 4. 1.5 mole of HCl (g)

Subtopic:  Limiting Reagent |
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ln, a closed vessel, 50 ml of A2B3 completely reacts with 200 ml of C2 according to the following equation:

2A2B3(g) + 5C2(g) 3C3B2(g)+CA4(g)

The composition of the gaseous mixture in the system will be:

1. 100 ml C2, 50 ml C3B2,50 ml CA4

2. 25 ml C2, 75 ml  C3B2, 25 ml CA4

3. 75 ml C2, 75 ml C3B2, 25 ml CA4

4. 10 ml C2, 25 ml C3B2, 100 ml CA4

Subtopic:  Limiting Reagent |
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The mass of ammonia produced when 2.00 × 103 g dinitrogen reacts with 1.00 ×103 g of dihydrogen is: 

1. 2338.11 g

2. 2428.57 g

3. 2712.24 g

4. 2180.56 g
 

Subtopic:  Limiting Reagent |
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If 0.5 moles of BaCl2 is reacted with 0.2 moles of Na3PO4 then the maximum moles of Ba3(PO4)2 formed is:

1. 0.33 2. 0.25
3. 0.10 4. 0.52
Subtopic:  Limiting Reagent |
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In a reaction A + B2 →AB2, 
A will act as a limiting reagent if :

i. 300 atoms of A reacts with 200 molecules of B
ii. 2 moles A reacts with 3 moles B2
iii. 100 atoms of A reacts with 100 molecules of B
iv. 5 moles A reacts with 2.5 moles B
v. 2.5 moles A reacts with 5 moles B2

Choose the correct option:

1. (i), (ii)
2. (i), (ii), (v)
3. (ii), (v)
4. All
Subtopic:  Limiting Reagent |
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20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g of magnesium oxide.
The percentage purity of magnesium carbonate in the sample will be: 
(Atomic weight of Mg=24)

1. 75 2. 96
3. 60 4. 84
Subtopic:  Limiting Reagent |
 64%
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NEET - 2015
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The moles of lead (II) chloride that will be formed from a reaction
between 6.5 g of PbO and 3.2 g of HCl are:

1. 0.044
2. 0.333
3. 0.011
4. 0.029

Subtopic:  Limiting Reagent |
 58%
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AIPMT - 2008
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