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 |
 81%
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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 |
 80%
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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 |
 69%
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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 |
 70%
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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%
From NCERT
NEET - 2019
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