【Test Your Knowledge】Basic Chemical Engineering Knowledge (25)
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1. On-site quality management refers to quality management at the production front line. （ ） 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. （ ） 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. ( ) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. ( ) 5. Pressure is nothing but force. （ ） 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. ( ) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. ( ) 8. The theoretical maximum installation height for the pump is 10.33 m. （ ） 9. The relative density of a substance is the ratio of its density to the density of pure water. ( ) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. ( ) Reference answer: 1. Correct ； 2. Wrong ； 3. Yes ； 4. Wrong ； 5. Wrong ； 6. Yes ； 7. Yes ； 8. Yes ； 9. Wrong ； 10. Wrong ； Did you get it right? This post was last edited by zhangyong6404 on 2009-4-8 19:01.]
On-site quality management refers to quality management at the production front line. (T) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (F) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (T) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (F) 5. Pressure is nothing but force. (F) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating capabilities. (T) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (F) 8. The theoretical maximum installation height of the pump is 10.33 m. (T) 9. The relative density of a substance is the ratio of its density to the density of pure water. (T) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (T)
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Yes) 8. The theoretical maximum installation height for the pump is 10.33 m. (Correct) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Yes) 8. The theoretical maximum installation height for the pump is 10.33 m. (Incorrect) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (Incorrect) 2. The greater the vapor pressure of a substance, the harder it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Incorrect) 8. The theoretical maximum installation height for the pump is 10.33 m. (Incorrect) 9. The relative density of a substance is the ratio of its density to the density of pure water. (True) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. ( Wrong )
1. On-site quality management refers to quality management at the production front line. (T) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (F) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (T) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (F) 5. Pressure is nothing but force. (F) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating capabilities. (T) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (T) 8. The theoretical maximum installation height of the pump is 10.33 m. (T) 9. The relative density of a substance is the ratio of its density to the density of pure water. (T) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (F)
1. On-site quality management refers to quality management at the production front line. (Mistake) 2. The higher the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Correct) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Mistake) 5. Pressure is the same as force. (Correct) (Pressure is generally abbreviated as force.) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Correct) 7. The conversion rate is the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Error) 8. The theoretical maximum installation height for the pump is 10.33 m. (Mistake) (1 atmosphere is this value.) 9. The relative density of a substance refers to the ratio of its density to the density of pure water. (Error) (For liquids, it is compared with pure water at 4 degrees Celsius.) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Incorrect) 8. The theoretical maximum installation height for the pump is 10.33 m. (Incorrect) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. √ 2. × (At the same temperature, substances with a higher saturated vapor pressure are more volatile.) 3. √ 4. × (The heat load refers to the heat exchange capacity required of a heat exchanger in unit time for industrial purposes.) ) 5. √ (The force acting per unit area vertically is called static pressure, also simply referred to as pressure.) 6. √ 7. × (The conversion rate indicates the extent to which a reactant participates in a reaction; it represents the percentage of a given amount of a reactant that actually reacts.) 8. √ 9. × (The relative density of a substance is the ratio of its density at a certain temperature to the density of pure water at 277 K.) 10. × (Under certain conditions, when a gas and a liquid are in equilibrium, the maximum amount of solute that can be dissolved by a certain amount of solvent is known as solubility.)
1 right, 2 wrong, 3 right, 4 wrong, 5 wrong, 6 right, 7 wrong, 8 wrong, 9 wrong, 10 wrong
1. On-site quality management refers to quality management at the production front line. (Incorrect) 2. The greater the vapor pressure of a substance, the harder it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Incorrect) 8. The theoretical maximum installation height for the pump is 10.33 m. (Yes) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Yes) 8. The theoretical maximum installation height for the pump is 10.33 m. (Incorrect) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Incorrect) 5. Pressure is the same as force. (Incorrect) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Yes) 8. The theoretical maximum installation height for the pump is 10.33 m. (Correct) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Wrong) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)
1. On-site quality management refers to quality management at the production front line. (T) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (F) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (T) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (F) 5. Pressure is nothing but force. (F) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating capabilities. (T) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (F) 8. The theoretical maximum installation height of the pump is 10.33 m. (T) 9. The relative density of a substance is the ratio of its density to the density of pure water. (T) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (T)
1、√ 2、× 3、√ 4、× 5、× 6、√ 7、× (the ratio of the actual amount of reactant that reacts or of product that is formed to its theoretical amount) 8、× 9、× (gases are not the case) 10、× (the maximum mass of a substance that can dissolve in 100 g of water)
Right, wrong, right, wrong, wrong, right, wrong, wrong, wrong, wrong
1、√ 2、× 3、√ 4、× 5、√ 6、√ 7、× 8、√ 9、× 10、×
1. T 2.F The higher the vapor pressure, the easier it is to volatilize. 3.F 4.T 5.F Physical pressure is the force per unit area (these two terms are used interchangeably in chemical manufacturing). 6.T 7.F The conversion rate refers to the percentage of the reactant that participates in the reaction relative to the total amount of reactant. 8.T 9.T 10.F At a constant temperature and pressure, the maximum amount of gas that can dissolve in a certain amount of solvent is known as the solubility of that gas. Solid solubility refers to the number of grams of a substance that can dissolve in 100 grams of solvent at a certain temperature to reach saturation
1. True 2. False 3. True 4. False 5. False 6. False 7. False 8. True 9. False 10. False
1.T 2.F 3.T 4.F 5.F 6.F 7.F 8T 9.F 10.F
1. On-site quality management refers to quality management at the production front line. (True) 2. The greater the vapor pressure of a substance, the more difficult it is for it to evaporate. (Incorrect) 3. During operation, the temperature of rolling bearings should generally not exceed 65°C. (Yes) 4. The heat transfer rate refers to the heat exchange capacity that is required of a heat exchanger in industrial applications per unit of time. (Yes) 5. Pressure is simply force. (Incorrect, but this is the common usage in the chemical industry.) 6. Concentrated sulfuric acid has strong oxidizing properties, as well as water-absorbing and dehydrating properties. (Yes) 7. The conversion rate refers to the ratio of the theoretical amount of raw material used to the actual amount of raw material used. (Yes) 8. The theoretical maximum installation height for the pump is 10.33 m. (Yes) 9. The relative density of a substance is the ratio of its density to the density of pure water. (Yes) 10. Under certain conditions, when gas and liquid are in equilibrium, the amount of solute that a certain quantity of solvent can dissolve is called solubility. (Mistake)