Question 11 : What is the concentration of a solution with 10 grams of calcium in 1000 m³ of water?
1. 150 ppm
2. 250 ppm
3. 800 ppm
4. 1000 ppm
View Answer   Discuss with Members

Question 12 : What is the molarity of a solution with a mass of solute 10 kg mass and 100 liter volume?
1. 0.1 molar
2. 1 molar
3. 10 molar
4. 100 molar
View Answer   Discuss with Members

Question 13 : What is the concentration of 100 lbs. of solution occupying 25 m³ of volume?
1. 1.8 Kg/m³
2. 2.7 Kg/m³
3. 4 Kg/m³
4. 8 Kg/m³
View Answer   Discuss with Members

Question 14 : What is the concentration of a 22 grams of carbon dioxide occupying 0.5 m³ volume?
1. 1 mole/m³
2. 2 mole/m³
3. 11 mole/m³
4. 22 mole/m³
View Answer   Discuss with Members

Question 15 : Which of the following is not the unit of concentration?
1. Mole/m³
2. Molar
3. N/m³
4. ppm
View Answer   Discuss with Members

Question 16 : A mixture contains 10% CO, 40% CO₂ and 50% H₂O, what is the mass percent of CO₂?
1. 9.5
2. 15.4
3. 39.5
4. 74.1
View Answer   Discuss with Members

Question 17 : A mixture contains 20% NaCl, 30% CH₄ and 50% H₂O, what is the mass percent of NaCl?
1. 21
2. 34
3. 45
4. 68
View Answer   Discuss with Members

Question 18 : A mixture contains 20% CO₂, 30% SO₂ and 50% H₂O, what is the mass percent of CO₂?
1. 23
2. 45
3. 66
4. 87
View Answer   Discuss with Members

Question 19 : The mole percent of CO₂ and H₂O in a mixture is 40% and 60% respectively, what is the mass percent of CO₂?
1. 24.1
2. 47.2
3. 61.9
4. 78.5
View Answer   Discuss with Members

Question 20 : The mole percent of H₂ and N₂ in a mixture is 50% each, what is the mass percentage of H₂?
1. 12.5
2. 25
3. 50
4. 87.5
View Answer   Discuss with Members