20 grams of CaCO3 is heated, how much calcium oxide will produce?
1. 5.6 grams
2.11.2 grams
3.22.4 grams
4.44.8 grams
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
4 moles of CO and 2 moles of O2 are reacted, then what type of reactant O2 is?
1.Limiting reagent
2.Excess reagent
3.Can’t say
4. none of the mentioned
400 g of CaSO4 is dissolved with 500 g of H2O, if 226 g of CaSO4.5H2O crystallizes out, then what is the percentage of CaSO4 in the remaining solution?
1.39.16%
2.51.54%
3.62.28%
4.75.67%
56 grams of carbon monoxide is oxidized with excess oxygen, how much carbon dioxide will it produce?
1.22 grams
2.44 grams
3.66 grams
4.88 grams
A reactor is supplied with 10 moles glucose and excess oxygen to produce CO2 and H2O, if the rate of products is 25 moles, what is the percentage of CO2 in the products?
1.0.1
2.0.2
3. 0.3
4. 0.4
A reactor is supplied with glucose and oxygen to produce 40% CO2, 60% H2O, what is the ratio of glucose reacted and products?
1.0.2
2. 0.4
3.0.6
4.0.8
If 28 grams of N2 and 10 grams of H2 are reacted, how much NH3 will produce?
1.17 grams
2.34 grams
3.51 grams
4.54 grams
Which of the following does stoichiometry of a reaction is all about?
1.Extent of reaction
2.Heat of reaction
3. Amount of reactants and products
4.None of the mentioned
xKMnO4 + yFeS + zH2SO4 -> xMnSO4 + wFe2(SO4)3 + uK2SO4 + zH2O, what is the value of x + y + z + w + u?
1.60
2.74
3.85
4.98
1 mole of glucose is burnt, how much carbon dioxide will it produce?
1.44 grams
2.176 grams
3.264 grams
4.352 grams
10 moles of C6H12 reacted with 18 moles of O2, how many moles of CO2 will produce?
1.3
2.6
3.9
4.12
100 Kg of a gas mixture of 40% He and 60% Ne is passed through a diffusion tube and the product has 20% He and 80% Ne, what is the amount of He recovered?
1.25 Kg
2.45 Kg
3.50 Kg
4.75 Kg
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
2 moles of N2 and 8 moles of H2 are reacted, then what type of reactant N2 is?
1.Limiting reagent
2.Excess reagent
3.Can’t say
4.None of the mentioned
4 moles of CH4 and 4 moles of O2 are reacted, then what type of reactant CH4 is?
1. Limiting reagent
2.Excess reagent
3.Can’t say
4.None of the mentioned
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
50 Kg of a solid liquid mixture containing 10% solid and 90% water is left open in an atmosphere, after some time the water is 80%, what is the weight of the mixture now?
1.10 Kg
2.25 Kg
3.35 Kg
4.50 Kg
50 Kg of a solid liquid mixture containing 20% solid and 80% water is left open in the atmosphere, after some time the water is 60%, how much water is evaporated?
1.15 Kg
2.25 Kg
3.35 Kg
4.45 Kg
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
78 grams of benzene is burnt in air, how much water will it produce?
1.18 grams
2.36 grams
3.54 grams
4.72 grams
A 100 Kg liquid solid mixture with 10% solid and 90% liquid is input to a dryer, if the amount of evaporated water is 60% of the amount of input, what is the amount of liquid in the product?
1.10 Kg
2.20 Kg
3.30 Kg
4.40 Kg
A gas mixture of 40% He and 60% Ne is passed through a diffusion tube and the product has 10% He and 90% Ne, what is the percentage of He recovered?
1.25%
2.33.3%
3.50%
4.66.6%
A gas mixture of 40% He and 60% Ne is passed through a diffusion tube, if the amount of He is recovered is 20% of the input, what is the percentage of He in the product?
1.25 %
2.33.3 %
3.50 %
4.66.6 %
A reactor is supplied with 10 mole of Hexane and some hydrogen to produce 20% methane, 30% propane and 50% butane, what is the rate of products?
1.10 mole
2.16.6 mole
3.26.6 mole
4.40 mole/min
A reactor is supplied with 10 moles glucose and excess oxygen to produce 40% CO2, 60% H2O, what is the rate of products?
1.25 mole
2.50 mole
3.75 mole
4.100 mole
A reactor is supplied with 2 streams both at same rates, one has pure Cl2, and another has pure C2H6, if the product has 20% C2H5Cl and 50% HCl and 30% C2H6, what is the ratio of rate of feed and rate of product?
1. 0.2
2.0.5
3.2
4.5
A reactor is supplied with 2 streams both at same rates, one has pure Cl2, and another has pure C2H6, if the product has 20% C2H5Cl and 80% HCl, what is the ratio of rate of feed and rate of product?
1.0.2
2.0.5
3.2
4.5
A reactor is supplied with 2 streams both at the rate 5 mole, one has 40% Cl2 and 60% N2, and another has pure C2H6, if the product has C2H5Cl, HCl and N2 at the rate 20 mole, what is the percentage of HCl in products?
1.10%
2.15%
3.25%
4.30%
A reactor is supplied with Hexane and hydrogen to produce 20% methane, 30% propane and 50% butane, what is the ratio of hydrogen consumed and the hexane reacted?
1.0.21
2. 0.45
3.0.59
4.0.73
A reactor supplied with CO2 and H2O, the product contains 10% H2CO3 and 90% H2O, what is the feed rate of CO2, if the rate of product is 50 mole?
1.5 mole
2.10 mole
3.25 mole
4.50 mole
A reactor supplied with CO2 and H2O, the product contains 40% CO2, 30% H2O and 30% H2CO3, what is the ratio of feed rate of CO2 and rate of products?
1. 0.3
2. 0.4
3.0.7
4.0.9
A reactor supplied with CO2 and H2O, the product contains CO2, H2O and H2CO3, if the rate of products is 10 mole and percentage of CO2 in products is 20%, what is the feed rate of H2O?
1.2 mole
2. 4 mole
3.8 mole
4.10 mole/s
A reactor supplied with CO2 and H2O, the product contains H2O and H2CO3, if the rate of CO2 is 10 mole, what is the percentage of H2CO3 in products?
1.10
2.50
3.75
4.100
A reactor supplied with CO2 and H2O, the product contains H2O and H2CO3, if the rate of H2O is 10 mole, what is the rate of products?
1.5 mole
2.10 mole
3.15 mole
4.20 mole
C2H4 + xO2 -> 2CO2 + yH2O, what is the value of x + y?
1.2
2.3
3.5
4.8
C5H12 + xO2 -> yCO2 + zH2O, what is the value of x + y*z?
1.24
2.38
3.46
4.54
CH4 + 2O2 -> CO2 + 2H2O, what is the extent of reaction if only 50% of 96 grams of CH4 is consumed?
1. 1
2.3
3. 2
4.4
Ethane is supplied at the rate F with oxygen at the rate W and leaves the following products CO2, H2O, O2, C2H6 and H2 at the rate P. How many independent element balances are possible?
1.1
2. 2
3. 3
4.4
Ethane is supplied with chlorine in a reactor, how many independent element balances can you write?
1.1
2.2
3.3
4.4
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
How much nitrogen must be added to a 20% nitrogen solution to obtain 100 Kg of 40% nitrogen solution?
1.10 Kg
2.25 Kg
3.50 Kg
4. 75 Kg
N2 + 2O2 -> 2NO2, what is the extent of reaction if 6 moles of NO2 is produced?
1.3
2. 6
3.12
4.18
Pentane is burnt to produce carbon dioxide 40% of which can be converted into carbon monoxide, how much Butane must be burnt to produce 176 grams of carbon monoxide?
1.18 grams
2.36 grams
3.72 grams
4.96 grams
wC3H6O3 + xO2 –> yCO2 + zH2O, what is the value of w + x + y + z?
1.3
2. 6
3.10
4.14
wC3H7O4 + xO2 -> yCO2 + zH2O, what is the value of w + x + y + z?
1.21
2. 35
3.41
4.47
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
Which of the following is true about excess reagents?
1.Consumes completely
2.Consumes partially
3.Does not react
4.None of the mentioned
Which of the following is true about limiting reagents?
1.Consumes completely
2.Consumes partially
3.Does not react
4.None of the mentioned
xFeS2 + yO2 -> zFe2O3 + wSO2, what is the value of x + y + z + w?
1.16
2.21
3.25
4.32