Engineering/Chemical Engineering Mcq Question Set 15 Sample Test,Sample questions

Question:
 5 J of heat is supplied to a steady state system, what is the work done by the system?

1. – 5 J

2.5 J

3.0

4.10 J

Posted Date:-2022-03-15 11:28:06


Question:
 5 Kg of steam is enclosed in a container with internal energy = 10 J/Kg, then 25 J of heat is supplied to the system, what is the final internal energy?

1. 5 J/Kg

2.10 J/Kg

3.15 J/Kg

4.20 J/Kg

Posted Date:-2022-03-15 11:15:46


Question:
 CP-T curve covers 10 J from 2oC to 10oC, what is the enthalpy change?

1.10 J

2.20 J

3. 80 J

4.100 J

Posted Date:-2022-03-15 11:25:37


Question:
 CP-T curve of CO2 forms a rectangle of height 10 J/oC from 5oC to 10oC?

1.10 J

2.50 J

3.100 J

4.250 J

Posted Date:-2022-03-15 11:25:58


Question:
 Enthalpy of reactants is 30 J/Kg and enthalpy of products is 10 J/Kg, what is the heat of reaction?

1. -20 J/Kg

2.20 J/Kg

3. -10 J/Kg

4.10 J/Kg

Posted Date:-2022-03-15 11:41:42


Question:
 For an ideal gas isobaric process at pressure 1 Pa, the volume of the gas changes from 1 m3 to 5 m3, what is the work done by the gas?

1.1 J

2.4 J

3.5 J

4.10 J

Posted Date:-2022-03-15 11:38:04


Question:
 For an ideal gas isobaric process what is the work done by the gas from 2 m3 to 0.5 m3 at 2 Pa?

1.-3 J

2. 3 J

3. -5 J

4.5 J

Posted Date:-2022-03-15 11:39:32


Question:
 For endothermic reactions, what is the heat of reaction?

1. Positive

2.Negative

3.Zero

4.cannot say

Posted Date:-2022-03-15 11:40:36


Question:
 Ice having CP = 15 J/oC, is heated from -10oC to -4oC, what is the enthalpy change?

1.30 J

2. 60 J

3. 90 J

4.120 J

Posted Date:-2022-03-15 11:18:42


Question:
 In a 3 stage process Q1 = 10 J, Q2= – 15 J, Q3 = 25 J, if ∆E1 = 15J and ∆E3 = 10 J, what is the work done in second stage, if the total ∆E is 30 J?

1. 5 J

2.10 J

3.15 J

4.20 J

Posted Date:-2022-03-15 11:16:33


Question:
 In an open, steady state adiabatic process if the change in kinetic energy is 10 J and change in potential energy is 15 J, what is the work done by the system?

1.10 J

2. 15 J

3.25 J

4. -25 J

Posted Date:-2022-03-15 11:35:02


Question:
 In an open, steady state system if the heat transferred is 10 J and work done by the system is 5 J, what is the change in Potential energy (neglect kinetic energy)?

1. 5 J

2.-5J

3.15 J

4.-15 J

Posted Date:-2022-03-15 11:35:25


Question:
 Liquid benzene having CP = 29 J/oC, is heated from 5oC to 10oC, what is the enthalpy change?

1. 29 J

2.145 J

3. 195 J

4.290 J

Posted Date:-2022-03-15 11:18:08


Question:
1 J of heat is supplied to the system and 1 kJ of work is done by the system, then the system is which of the following?

1.Steady state

2.Unsteady state

3.Closed

4.None of the mentioned

Posted Date:-2022-03-15 11:31:55


Question:
10 J of heat and 5 J of work is supplied to a system and 20 J of heat is taken out, then the system is which of the following?

1. Steady state

2.Unsteady state

3.Closed

4.None of the mentioned

Posted Date:-2022-03-15 11:30:46


Question:
10 J of heat is taken off from a steady state system, what is the work done on the system?

1. – 10 J

2.10 J

3. – 5 J

4. 5 J

Posted Date:-2022-03-15 11:28:26


Question:
10 J of work and 5 J of heat is supplied to the system, then the system is which of the following?

1. Steady state

2.Unsteady state

3.Closed

4.None of the mentioned

Posted Date:-2022-03-15 11:32:24


Question:
10 J of work is done on a steady state system, what is the heat supplied to the system?

1. – 10 J

2.10 J

3. 5 J

4.0.8

Posted Date:-2022-03-15 11:30:00


Question:
15 J of heat and 10 J of work is supplied to a system and 25 J of heat is taken out, then the system is which of the following?

1.Steady state

2.Unsteady state

3. Closed

4.None of the mentioned

Posted Date:-2022-03-15 11:31:09


Question:
15 J of heat is supplied to a system and 15 J of work is done on the system, then the system is which of the following?

1. Steady state

2.Unsteady state

3.Closed

4.None of the mentioned

Posted Date:-2022-03-15 11:31:29


Question:
15 J of work is done by a steady state system, what is the heat supplied to the system?

1.– 15 J

2.15 J

3.10 J

4.– 10 J

Posted Date:-2022-03-15 11:30:22


Question:
2 Kg of steam is enclosed in a container with internal energy = 5 J/Kg, then 5 J of heat is supplied to the system, what is the final internal energy?

1. 7.5 J/ Kg

2.15 J/Kg

3.22.5 J/Kg

4.30 J/Kg

Posted Date:-2022-03-15 11:15:18


Question:
A mixture contains 20% O2 with CP = 10 J/oC, 30% N2 with CP = 20 J/oC and 50% CO2 with CP= 40 J/oC, what is the average CP of mixture?

1.20 J/oC

2. 28 J/oC

3.34 J/oC

4.42 J/oC

Posted Date:-2022-03-15 11:21:14


Question:
A mixture contains 20% O2 with CP = 15 J/oC and 80% CO2 with CP = 20 J/oC, what is the average CP of mixture?

1. 3 J/oC

2.9 J/oC

3.16 J/oC

4.19 J/oC

Posted Date:-2022-03-15 11:20:15


Question:
A mixture contains 20% SO2 with CP= 35 J/oC, 30% NO3 with CP = 20 J/oC and 50% CO2 with CP = 40 J/oC, what is the average CP of mixture?

1. 12 J/oC

2.17 J/oC

3.25 J/oC

4.33 J/oC

Posted Date:-2022-03-15 11:21:38


Question:
A mixture contains 30% Ar with CP = 30 J/oC, 30% N2 with CP = 20 J/oC and 40% CH4 with CP = 10 J/oC, what is the average CP of mixture?

1.7 J/oC

2.12 J/oC

3.19 J/oC

4.26 J/oC

Posted Date:-2022-03-15 11:20:40


Question:
CP-T curve of H2 forms a rectangle of height 20 J/oC from 4oC to 5oC?

1. 20 J

2.80 J

3.100 J

4.140 J

Posted Date:-2022-03-15 11:26:59


Question:
Cyclohexane having CP = 48 J/oC, is heated from 50oC to 55oC, what is the enthalpy change?

1. 240 J

2.480 J

3.720 J

4.960 J

Posted Date:-2022-03-15 11:19:30


Question:
Enthalpy of reactants is 15 J/Kg and enthalpy of products is 40 J/Kg, what is the heat of reaction?

1. -10 J/Kg

2. 10 J/Kg

3. -25 J/Kg

4.25 J/Kg

Posted Date:-2022-03-15 11:40:56


Question:
Enthalpy of reactants is 50 J/Kg and enthalpy of products is 25 J/Kg, what is the heat of reaction?

1. -10 J/Kg

2.10 J/Kg

3. -25 J/Kg

4. 25 J/Kg

Posted Date:-2022-03-15 11:41:19


Question:
For an ideal gas isochoric process, what is the work done by the gas from 2 Pa to 1 Pa?

1. 0

2.1 J

3. 200 J

4.None of the mentioned

Posted Date:-2022-03-15 11:39:12


Question:
For an ideal gas isothermal process what is the work done by the gas from 1 m3 to 2 m3 at 300 K?

1.0.69 kJ

2.1.24 kJ

3.1.73 kJ

4. 2.45 kJ

Posted Date:-2022-03-15 11:38:24


Question:
For an ideal gas isothermal process what is the work done by the gas from 4 Pa to 1 Pa at 300 K?

1. 1.22 kJ

2. 2.15 kJ

3.2.83 kJ

4.3.45 kJ

Posted Date:-2022-03-15 11:38:46


Question:
For exothermic reactions, what is the heat of reaction?

1.Positive

2.Negative

3. Zero

4.cannot say

Posted Date:-2022-03-15 11:40:14


Question:
Heat Capacity of CO2 is given by 12 + 3T + T2, what is the enthalpy change from 0oC to 6oC?

1.169 J

2.198 J

3.244 J

4.360 J

Posted Date:-2022-03-15 11:22:17


Question:
Heat Capacity of water is given by 4 + T2, what is the enthalpy change from 0oC to 3oC?

1.7 J

2.14 J

3.21 J

4. 32 J

Posted Date:-2022-03-15 11:22:38


Question:
If the system is insulated which of the following might the process be?

1.Isothermal

2.Isobaric

3.Isochoric

4.Adiabatic

Posted Date:-2022-03-15 11:36:17


Question:
In a 2 stage process Q1 = 5 J, Q2 = 10 J, if the change in internal energy in first stage is 10 J and the total change in internal energy is 20 J, what is the work do done in second stage?

1. 0

2.5 J

3.10 J

4.– 5 J

Posted Date:-2022-03-15 11:16:09


Question:
In a closed system, change in internal energy is 10 J and heat transferred to it is 10 J what is the work done by the system?

1. 0

2.10 J

3.-20 J

4.20 J

Posted Date:-2022-03-15 11:33:44


Question:
In an open system, what is the enthalpy change is heat taken from it is 10 J?

1.0

2.-10 J

3.10 J

4. Cannot be determined

Posted Date:-2022-03-15 11:34:35


Question:
Steam having CP = 105 J/oC, is heated from 100oC to 104oC, what is the enthalpy change?

1.210 J

2.420 J

3.630 J

4.840 J

Posted Date:-2022-03-15 11:19:06


Question:
Water having CP = 10 J/oC, is heated from 10oC to 50oC, what is the enthalpy change?

1.100 J

2.250 J

3.400 J

4.500 J

Posted Date:-2022-03-15 11:17:47


Question:
What is ∆E for a steady-state system?

1.Positive

2.Negative

3. Zero

4.cannot say

Posted Date:-2022-03-15 11:27:43


Question:
What is the heat transferred to 2 Kg and 5 m3 of a rigid system, with change in enthalpy 5 J/Kg?

1. 5 J

2.10 J

3.15 J

4. 20 J

Posted Date:-2022-03-15 11:17:08


Question:
What is the value of CP – CV for ideal gases?

1.0

2.R/2

3.R

4.2R

Posted Date:-2022-03-15 11:19:52


Question:
What is the work done by an open steady-state system if heat transferred to it is 10 J?

1. 0

2.-10 J

3.10 J

4.Cannot be determined

Posted Date:-2022-03-15 11:33:19


Question:
What is the work done for an ideal gas isothermal process?

1. Zero

2.Equal to heat transferred

3. Equal to change in internal energy

4. Cannot say

Posted Date:-2022-03-15 11:37:09


Question:
What is the work done for an isobaric process?

1. P∆V

2. V∆P

3.PV

4.None of the mentioned

Posted Date:-2022-03-15 11:37:43


Question:
What is the work done for an isochoric process?

1. Positive

2.Negative

3.Zero

4.cannot say

Posted Date:-2022-03-15 11:36:47


Question:
Which of the following is true for isothermal ideal gases?

1.∆T = 0

2.∆U = 0

3.∆H = 0

4.All of the Mentioned

Posted Date:-2022-03-15 11:35:49


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