# Multiple choice question for engineering

## Set 1

1-4. For the given following reaction

a NH3 + b O2 → c NO2 + d H2O

1. The value of a, is?

a) 2

b) 4

c) 6

d) 8

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2. The value of b, is?

a) 1.5

b) 2.5

c) 3.5

d) 4.5

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3. The value of c, is?

a) 2

b) 4

c) 6

d) 8

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4. The value of d, is?

a) 1

b) 2

c) 3

d) 4

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5. If 1 kg of Octane is oxidised with O2, then how much kg of O2 is required?

a) 200

b) 400

c) 600

d) 800

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6. If 1 kg of butane is burned with O2, then how much kg of CO2 will produce by 40 kg of butane?

a) 111.38

b) 121.38

c) 131.38

d) 141.38

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7-8. For the given chemical reaction

C6H14 + 19/2 O2 → 6 CO2+ 7 H2O

7. If the required amount of CO2 is 440 kg/hour then how much kg of C6H14 should be burned per hour?

a) 123.33

b) 143.33

c) 163.33

d) 183.33

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8. If the required amount of water is 72 kg then how much C6H14 should be burned per hour?

a) 49.14

b) 39.14

c) 39.14

d) 29.14

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9-10. For a given chemical reaction

N2 + 3H2 → 2NH3

9. For producing 34 gms of NH3, how many moles of N2 is required?

a) 1

b) 2

c) 3

d) 4

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10. For producing 34 gms of NH3, how many gms of H2 is required?

a) 3

b) 6

c) 9

d) 12

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## Set 2

1-4. For the given following reaction

a NH3 + b O2 → c NO2 + d H2O

1. The value of a, is?

a) 2

b) 4

c) 6

d) 8

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2. The value of b, is?

a) 1.5

b) 2.5

c) 3.5

d) 4.5

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3. The value of c, is?

a) 2

b) 4

c) 6

d) 8

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4. The value of d, is?

a) 1

b) 2

c) 3

d) 4

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5. If 1 kg of Octane is oxidised with O2, then how much kg of O2 is required?

a) 200

b) 400

c) 600

d) 800

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6. If 1 kg of butane is burned with O2, then how much kg of CO2 will produce by 40 kg of butane?

a) 111.38

b) 121.38

c) 131.38

d) 141.38

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7-8. For the given chemical reaction

C6H14 + 19/2 O2 → 6 CO2+ 7 H2O

7. If the required amount of CO2 is 440 kg/hour then how much kg of C6H14 should be burned per hour?

a) 123.33

b) 143.33

c) 163.33

d) 183.33

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8. If the required amount of water is 72 kg then how much C6H14 should be burned per hour?

a) 49.14

b) 39.14

c) 39.14

d) 29.14

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9-10. For a given chemical reaction

N2 + 3H2 → 2NH3

9. For producing 34 gms of NH3, how many moles of N2 is required?

a) 1

b) 2

c) 3

d) 4

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10. For producing 34 gms of NH3, how many gms of H2 is required?

a) 3

b) 6

c) 9

d) 12

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## Set 3

1-5. For the given unbalanced reaction CaSO4 + NaCl → CaCl2 + Na2SO4

1. How many CaSO4 in kg is required for producing 1 mole of Na2SO4? Assume NaCl in excess.

a) 136 kg

b) 156 kg

c) 176 kg

d) 196 kg

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2. How many kg of Na2SO4 will be produced using 80 kg of NaCl? Assume CaSO4 in excess.

a) 122 kg

b) 142 kg

c) 162 kg

d) 182 kg

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3. How many moles of CaCl2 will be produced using 300 kg of CaSO4? Assume NaCl in excess.

a) 2.2 kg

b) 4.2 kg

c) 6.2 kg

d) 8.2 kg

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4. How many pounds of NaCl required producing 2.5 pound moles of Na2SO4? Assume CaSO4 in excess.

a) 200

b) 400

c) 90800

d) 181600

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5. 1/A pound moles of CaSO4 are used to produce 222 kg of CaCl2. What is the value of A? Assume NaCl in excess.

a) 127

b) 227

c) 327

d) 427

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6. When 32gms of CH4 is burned with excess oxygen, how many grams of CO2 are produced?

a) 44

b) 88

c) 132

d) 176

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7. How many grams of C2H6 are required to produce 88 grams of CO2 when it is burned in the excess of oxygen?

a) 15

b) 30

c) 45

d) 60

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8-10. Nitric acid formation reaction is given as below

3NO2 + H2O → 2HNO3 + NO

8. The given reaction is

a) Balanced

b) Unbalanced

c) Partially balanced

d) None of the mentioned

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9. For producing 4 gram moles of HNO3, how many grams of NO2 are required?

a) 274

b) 275

c) 276

d) 277

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10. If the NO2 in the feed is 400 gms, How many moles HNO3 will be in the product?

a) 2.797

b) 3.797

c) 4.797

d) 5.797

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## Set 4

1-5. For the given unbalanced reaction CaSO4 + NaCl → CaCl2 + Na2SO4

1. How many CaSO4 in kg is required for producing 1 mole of Na2SO4? Assume NaCl in excess.

a) 136 kg

b) 156 kg

c) 176 kg

d) 196 kg

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2. How many kg of Na2SO4 will be produced using 80 kg of NaCl? Assume CaSO4 in excess.

a) 122 kg

b) 142 kg

c) 162 kg

d) 182 kg

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3. How many moles of CaCl2 will be produced using 300 kg of CaSO4? Assume NaCl in excess.

a) 2.2 kg

b) 4.2 kg

c) 6.2 kg

d) 8.2 kg

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4. How many pounds of NaCl required producing 2.5 pound moles of Na2SO4? Assume CaSO4 in excess.

a) 200

b) 400

c) 90800

d) 181600

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5. 1/A pound moles of CaSO4 are used to produce 222 kg of CaCl2. What is the value of A? Assume NaCl in excess.

a) 127

b) 227

c) 327

d) 427

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6. When 32gms of CH4 is burned with excess oxygen, how many grams of CO2 are produced?

a) 44

b) 88

c) 132

d) 176

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7. How many grams of C2H6 are required to produce 88 grams of CO2 when it is burned in the excess of oxygen?

a) 15

b) 30

c) 45

d) 60

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8-10. Nitric acid formation reaction is given as below

3NO2 + H2O → 2HNO3 + NO

8. The given reaction is

a) Balanced

b) Unbalanced

c) Partially balanced

d) None of the mentioned

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9. For producing 4 gram moles of HNO3, how many grams of NO2 are required?

a) 274

b) 275

c) 276

d) 277

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10. If the NO2 in the feed is 400 gms, How many moles HNO3 will be in the product?

a) 2.797

b) 3.797

c) 4.797

d) 5.797

### View Answer

## Set 5

1-5. a PtCl4 + b XeF2 → c PtF6 + d ClF + e Xe

For the given reaction

1. What is the value of a?

a) 1

b) 2

c) 3

d) 4

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2. What is the value of b?

a) 1

b) 3

c) 5

d) 7

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3. What is the value of c?

a) 1

b) 2

c) 3

d) 4

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4. What is the value of d?

a) 1

b) 2

c) 3

d) 4

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5. What is the value of e?

a) 1

b) 3

c) 5

d) 7

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6-10. For the given reaction, try to find the minimum values of balancing cofficients.

a Cr2(SO4)3 + b RbOH → c Cr(OH)3 + d Rb2SO4

6. What is the value of a?

a) 1

b) 2

c) 3

d) 4

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7. What is the value of b?

a) 1

b) 3

c) 6

d) 9

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8. What is the value of c?

a) 1

b) 2

c) 3

d) 4

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9. What is the value of d?

a) 1

b) 2

c) 3

d) 4

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10. What is the value of a+b+c+d?

a) 10

b) 12

c) 13

d) 14