Engineering/Chemical Engineering Mcq Question Set 17 Sample Test,Sample questions

Question:
 1 Kg of water is pumped to a height of 10 m, the enthalpy is changed by 50 J/Kg, and work done by the motor is 300 J/Kg, assuming a system is insulated what is the change in internal energy of water?

1. 100 J

2.150 J

3. 200 J

4.300 J


Question:
 10 Kg of water is pumped to a height of 2 m, the enthalpy is changed by 15 J/Kg, and work done by the motor is 50 J/Kg, assuming system is insulated what is the change in internal energy of water?

1.50 J

2.100 J

3.150 J

4.200 J


Question:
 2 Kg of water (CP = 0.15 J/KgoC) is pumped to a height of 0.1 m, work done by the motor is 10 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 27oC?

1. 10oC

2.19oC

3. 27oC

4.37oC


Question:
 If the reactions are unknown, is it possible to determine the degrees of freedom?

1.Yes

2.No

3. Depends on the type of reaction

4.None of the mentioned


Question:
 What is the heat of reaction if the heat of combustion of products is 2 J and heat of combustion of reactants is 10 J?

1. 8 J

2.-8 J

3. 4 J

4. -4 J


Question:
1 Kg of water (CP = 0.4 J/KgoC) is pumped to a height of 2 m, work done by the motor is 50 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 25oC?

1. 25oC

2.45oC

3.60oC

4. 75oC


Question:
1 Kg of water (CP = 0.5 J/KgoC) is pumped to a height of 0.5 m, work done by the motor is 40 J/Kg, and heat liberated by it is 10 J/Kg, what is the final temperature of water if the initial temperature was 10oC?

1.10oC

2.30oC

3.40oC

4.60oC


Question:
1 Kg of water (CP = 0.5 J/KgoC) is pumped to a height of 1 m, work done by the motor is 20 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 20oC?

1.20oC

2.30oC

3. 40oC

4.50oC


Question:
1 Kg of water is pumped to a height of 1 m, the enthalpy is changed by 5 J/Kg, and work done by the motor is 25 J/Kg, assuming a system is insulated what is the change in internal energy of water?

1. 10 J

2.25 J

3.35 J

4.50 J


Question:
5 Kg of water (CP = 1 J/KgoC) is pumped to a height of 0.5 m, work done by the motor is 50 J/Kg, and heat liberated by it is 5 J/Kg, what is the final temperature of water if the initial temperature was 0oC?

1. 2oC

2.4oC

3.6oC

4.8oC


Question:
5 Kg of water is pumped to a height of 5 m, the enthalpy is changed by 10 J/Kg, and work done by the motor is 100 J/Kg, assuming system is insulated what is the change in internal energy of water?

1.50 J

2.100 J

3. 150 J

4.200 J


Question:
In a reactor two stream are entering, one with C6H6 at 10 atm and 27oC, and another with H2 at 10 atm and 0oC, producing C6H12 and H2 at 10 atm and 23oC, what are the total degrees of freedom?

1.10

2.15

3.20

4.234


Question:
In a reactor two stream are entering, one with C6H6 at 10 atm and 27oC, and another with H2 at 10 atm and 0oC, producing C6H6, C6H12, and H2 at 10 atm and 23oC, what are the total degrees of freedom?

1.10

2.12

3.15

4.16


Question:
In a reactor two stream are entering, one with CH4 at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing CO2 and H2O at 10 atm and 23oC, what are the total degrees of freedom?

1.10

2.12

3.15

4.17 J


Question:
In a reactor two stream are entering, one with CH4 at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing CO2, CO, H2O, and O2 at 10 atm and 23oC, what are the total degrees of freedom?

1. 12

2.16

3.18

4.20


Question:
In a reactor two stream are entering, one with CO2 at 10 atm and 27oC, and another with H2O at 10 atm and 0oC, producing CH4, CO2, H2O, and O2 at 10 atm and 23oC, what are the total degrees of freedom?

1.10

2.15

3. 17

4. 21


Question:
In a reactor two stream are entering, one with H2 at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing H2O at 10 atm and 23oC, what are the total degrees of freedom?

1. 10

2.14

3. 16

4.19


Question:
In a reactor two stream are entering, one with H2 at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing H2O2, H2O, and O2 at 10 atm and 23oC, what are the total degrees of freedom?

1.12

2.17

3. 19

4.4


Question:
In a reactor two stream are entering, one with N2 at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing NO, NO2, NO3, and O2 at 10 atm and 23oC, what are the total degrees of freedom?

1.12

2.17

3.19

4.21


Question:
In a reactor two stream are entering, one with S at 10 atm and 27oC, and another with O2 at 10 atm and 0oC, producing SO2, SO3, and O2 at 10 atm and 23oC, what are the total degrees of freedom?

1.10

2.13

3.15

4. 17


Question:
Mechanical energy satisfy which of the following?

1.Completely Convertible

2.Non-convertible

3. Partially convertible

4.None of the mentioned


Question:
What are the degrees of freedom?

1.Total variables in the process

2.Total species in the process

3.Total reactions in the process

4.None of the mentioned


Question:
What are the total degrees of freedom if the number of species are 4, total streams are 2, stream temperature 2, stream pressure 1 and heat released 1, extent of reaction 1?

1.4

2.7

3.11

4.15 J


Question:
What are the total degrees of freedom if the number of species are 5, total streams are 2, stream temperature 2, stream pressure 2 and heat released 1?

1.1

2.5

3.6

4.12


Question:
What are the total degrees of freedom if the number of species are 8, total streams are 3, stream temperature 3, stream pressure 3 and heat released 1, extent of reaction 2?

1.8

2.12

3.15

4.17


Question:
What are the total degrees of freedom if the number of species are 8, total streams are 4, stream temperature 2, stream pressure 2 and heat released 1, extent of reaction 3?

1.12

2.16

3. 20

4.24


Question:
What is the difference between higher heating value and lower heating value if the product has 5 moles of H2O and Enthalpy of vaporization is 10 J/mole at standard conditions?

1. 10 J

2.-10 J

3. 50 J

4.-50 J


Question:
What is the difference between lower heating value and higher heating value if the product has 2 moles of H2O and Enthalpy of vaporization is 40 J/mole at standard conditions?

1. -40 J

2.40 J

3. -80 J

4.80 J


Question:
What is the energy balance to open system?

1.Energy in the system is constant

2.Matter in the system is constant

3.Matter is constant energy is variable

4.Both matter and energy are variable


Question:
What is the enthalpy of the reaction from 10oC to 15oC if CP = 5 J/oC, and the reference enthalpy is 25 J?

1. 25 J

2.50 J

3.75 J

4.100 J


Question:
What is the enthalpy of the reaction from 10oC to 25oC if CP = 2 J/oC, and the reference enthalpy is 20 J?

1.50 J

2.60 J

3.75 J

4.90 J


Question:
What is the enthalpy of the reaction from 15oC to 25oC if CP = 3 J/oC, and the reference enthalpy is 15 J?

1. 15 J

2.30 J

3.45 J

4.60 J


Question:
What is the enthalpy of the reaction from 50oC to 52oC if CP = 15 J/oC, and the reference enthalpy is 25 J?

1.35 J

2. 55 J

3.65 J

4.10 J


Question:
What is the heat of reaction for 2CO + O2 -> 2CO2, if the heat of combustion of CO = 20 J, O2 = 5 J, and CO2 = 25 J?

1. 5 J

2.-5 J

3.15 J

4. -15 J


Question:
What is the heat of reaction for C6H6 + 3H2 -> C6H12, if the heat of combustion of H2 = 2 J, C6H6= 30 J, and C6H12 = 25 J?

1. -6 J

2. 6 J

3. -11 J

4. 11 J


Question:
What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the heat of combustion of H2O = 5 J, CO2 = 10 J, O2 = 0, and CH4 = 25 J?

1.-5 J

2. 5 J

3. -10 J

4.10 J


Question:
What is the heat of reaction for H2 + Cl2 -> 2HCl, if the heat of combustion of H2 = 2 J, Cl2 = 10 J, and HCl = 10 J?

1.-8 J

2.8 J

3.-10 J

4.10 J


Question:
What is the heat of reaction for N2 + 3H2 -> 2NH3, if the heat of combustion of N2 = 5 J, H2 = 2 J, and NH3 = 15 J?

1.-5 J

2.5 J

3.-19 J

4.19 J/oC


Question:
What is the heat of reaction if the heat of combustion of products is 10 J and heat of combustion of reactants is 15 J?

1. -5 J

2.5 J

3. 10 J

4.Cannot say


Question:
What is the heat of reaction if the heat of combustion of products is 10 J and heat of combustion of reactants is 5 J?

1.-5 J

2.5 J

3.10 J

4.Cannot be determined


Question:
What is the heat of reaction if the heat of combustion of products is 25 J and heat of combustion of reactants is 15 J?

1. -5 J

2.5 J

3. -10 J

4. 10 J


Question:
What is the heat of reaction if the heat of combustion of products is 40 J and heat of combustion of reactants is 25 J?

1. 5 J

2.10 J

3.15 J

4. -15 J


Question:
What is the heat transferred from the system if the enthalpy of the output is 25 J and input is 10 J?

1. 5 J

2.-5 J

3.15 J

4. -15 J


Question:
What is the heat transferred from the system if the enthalpy of the output is 5 J and input is 10 J?

1. -5 J

2. -10 J

3. -15 J

4.5 J


Question:
What is the heat transferred to the system if the enthalpy of the output is 10 J and input is 6 J?

1.4 J

2.5 J

3. 6 J

4. 8 J


Question:
What is the heat transferred to the system if the enthalpy of the output is 14 J and input is 8 J?

1. 4 J

2.6 J

3.8 J

4.10 J


Question:
What is the heat transferred to the system if the enthalpy of the output is 15 J and input is 10 J?

1.1 J

2.2 J

3.4 J

4.5 J


Question:
What is the heating value of 10 Kg of coal with heat of combustion 10 J/Kg?

1. -10 J

2.10 J

3. -100 J

4.100 J


Question:
What is the heating value of 2 Kg of coal with heat of combustion 15 J/Kg?

1.-15 J

2. 15 J

3. -30 J

4.30 J/Kg


Question:
What is the value of higher heating value if the value of lower heating value is 10 J and the product has 5 moles of H2O and Enthalpy of vaporization is 4 J/mole at standard conditions?

1.10 J

2.20 J

3. 30 J

4.40 J


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