Question 71 : Which of the following is true about limiting reagents?
1. Consumes completely
2. Consumes partially
3. Does not react
4. None of the mentioned
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Question 72 : 4FeS₂ + 11O₂ -> 2Fe₂O₃ + 8SO₂, what is the extent of reaction if 512 grams of SO₂ is produced?
1. 1
2. 2
3. 3
4. 4
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Question 73 : H₂O₂ + H₂ -> 2H₂O, if the extent of reaction is 10, how much water is produced?
1. 10 moles
2. 20 moles
3. 30 moles
4. 40 moles
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Question 74 : CH₄ + 2O₂ -> CO₂ + 2H₂O, what is the extent of reaction if only 50% of 96 grams of CH₄ is consumed?
1. 1
2. 2
3. 3
4. 4
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Question 75 : N₂ + 2O₂ -> 2NO₂, what is the extent of reaction if 6 moles of NO₂ is produced?
1. 3
2. 6
3. 12
4. 18
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Question 76 : What is extent of reaction of a in the reaction 2CO + O₂ -> 2CO₂, if 20 moles CO₂ is produced?
1. 5
2. 10
3. 20
4. 40
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Question 77 : 60 grams of FeS₂, is burnt in air, how much sulfur dioxide will produce?
1. 16 grams
2. 32 grams
3. 64 grams
4. 128 grams
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Question 78 : xFeS₂ + yO₂ -> zFe₂O₃ + wSO₂, what is the value of x + y + z + w?
1. 16
2. 21
3. 25
4. 32
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Question 79 : 20 grams of NaOH is reacted with excess HCl, how much NaCl will it produce?
1. 29.25 grams
2. 58.5 grams
3. 117 grams
4. 234 grams
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Question 80 : 158 grams of potassium permanganate is reacted with ferrous sulfide in the presence of hydrochloric acid, approximately how much ferric sulfate will it produce?
1. 111 grams
2. 169 grams
3. 254 grams
4. 399 grams
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