# Engineering/Chemical Engineering Mcq Question Set 16 Sample Test,Sample questions

## Question: ` How are enthalpies of streams calculated?`

1. Relative to the reference state

2.Absolutely

3.Depends on the reaction

4.None of the mentioned

Posted Date:-2022-03-16 02:02:00

## Question: ` In a reaction the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.4 glucose and 0.6 water, what is the fraction of glucose in the products?`

1. 0.2

2.0.4

3. 0.6

4.0.8

Posted Date:-2022-03-15 18:58:42

## Question: ` In the reaction C + 2H2 -> CH4, if the heat liberated is -5 J, what is the heat of formation of CH4?`

1.-5J

2.5 J

3.0 J

4.Cannot be determined

Posted Date:-2022-03-15 18:54:57

## Question: ` In the reaction C + O2 -> CO2, if the heat liberated is 10 J, what is the heat of formation of CO2?`

1.-10 J

2.10 J

3.0

4.Cannot be determined

Posted Date:-2022-03-15 18:53:13

## Question: ` Three feeds, 10 mole with H = 25 J/mole, 5 mole with H = 10 J/mole and 15 mole with 20 J/mole, what is the enthalpy of the products?`

1.10 J/mole

2.12 J/mole

3. 20 J/mole

4.28 J/mole

Posted Date:-2022-03-15 19:04:12

## Question: ` Two feeds, 5 mole with 25 J/mole and F with 5 J/mole, product contains two streams, 5 mole with 10 J/mole and 10 mole with 15 J/mole, what is the value of F?`

1.10 mole

2.15 mole

3. 20 mole

4.25 mole

Posted Date:-2022-03-15 19:05:23

## Question: ` What is the enthalpy of reaction forC6H6 -> 3C2H2, if the conversion of C6H6 is 80%, and heat of formation of C6H6, and C2H2 are 24 J, and 8 J?`

1. 0

2.2.4 J

3.4.8 J

4.5.6 J

Posted Date:-2022-03-16 01:53:24

## Question: ` What is the heat transferred to the system, if change in enthalpy is 15 J and change in volume is 2 m3 at 5 Pa?`

1. 5 J

2.8 J

3.10 J

4.12 J

Posted Date:-2022-03-16 01:57:12

## Question: `Enthalpy of a stream is which function of temperature and pressure?`

1.Explicit

2.Implicit

3.Cannot say

4.None of the mentioned

Posted Date:-2022-03-15 18:55:36

## Question: `Heat of formations of A, B, C, and D, are 1 J, 2 J, 3 J, and 4 J respectively, what is the heat of reaction 3A + 4B -> 2C + D?`

1.-1 J

2.1 J

3.3 J

4.6 J

Posted Date:-2022-03-15 18:52:03

## Question: `Heat of formations of A, B, C, and D, are 2 J, 5 J, 3 J, and 10 J respectively, what is the heat of reaction 4A + 5B -> 2C + 2D?`

1. -10 J

2.-7 J

3. -5 J

4. 0.4

Posted Date:-2022-03-15 18:52:25

## Question: `Heat of formations of A, B, C, and D, are 3 J, 5 J, 4 J, and 8 J respectively, what is the heat of reaction 2A + 2B -> 2C + D?`

1.-5 J

2.0

3.5 J

4.8 J

Posted Date:-2022-03-15 18:52:53

## Question: `Heat of formations of A, B, C, and D, are 5 J, 10 J, 15 J, and 20 J respectively, what is the heat of reaction A + 4B -> 3C + D?`

1.10 J

2.20 J

3.35 J

4.45 J

Posted Date:-2022-03-15 18:51:01

## Question: `Heat of formations of A, B, C, and D, are 5 J, 8 J, 2 J, and 15 J respectively, what is the heat of reaction 3A + B -> 3C + 2D?`

1. 9 J

2. 10 J

3.13 J

4.15 J

Posted Date:-2022-03-15 18:51:43

## Question: `In a reaction the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.4 glucose and 0.6 water, what is the fraction of water in the products?`

1. 0.2

2.0.4

3.0.6

4.0.8

Posted Date:-2022-03-15 18:59:56

## Question: `In a reaction the feed is 5 moles of 0.5 glucose and 0.5 sucrose, and another feed of 15 moles of 0.3 glucose and 0.7 sucrose, what is the fraction of glucose in the products?`

1.0.35

2. 0.45

3.0.75

4.0.95

Posted Date:-2022-03-15 19:00:59

## Question: `In a reaction, the feed is 10 moles of 0.1 glucose and 0.9 water, and another feed of 5 moles of 0.2 glucose and 0.8 water, what is the total moles of product?`

1.5

2.10

3.15

4. 20

Posted Date:-2022-03-15 18:56:01

## Question: `In the reaction 2C + O2-> 2CO, if the heat liberated is 10 J, what is the heat of formation of CO?`

1.-5 J

2. 5 J

3.-10 J

4.10 J

Posted Date:-2022-03-15 18:54:30

## Question: `In the reaction 2H2 + O2 -> 2H2O, if the heat liberated is 50 J, what is the heat of formation of H2O?`

1.-25 J

2.25 J

3.-50 J

4.50 J

Posted Date:-2022-03-15 18:53:41

## Question: `In the reaction 2N -> N2, if the heat liberated is 6 J, what is the heat of formation of N2?`

1. â€“ 6 J

2.6 J

3.0

4.Cannot be determined

Posted Date:-2022-03-15 18:54:05

## Question: `The specific volume of a gas is 2 m3/Kg, at 12 Pa, H = 30 J/Kg and at 15 Pa, H = 45 J/Kg, what is the heat transferred to the system?`

1. 6 J/Kg

2.9 J/Kg

3.12 J/Kg

4.15 J/Kg

Posted Date:-2022-03-16 01:59:58

## Question: `The specific volume of a gas is 3 m3/Kg, at 6 Pa, H = 4 J/Kg and at 9 Pa, H = 14 J/Kg, what is the heat transferred to the system?`

1. 0

2.1 J/Kg

3.5 J/Kg

4.25 J/Kg

Posted Date:-2022-03-16 02:00:23

## Question: `The specific volume of a gas is 5 m3/Kg, at 10 Pa, H = 50 J/Kg and at 20 Pa, H = 100 J/Kg, what is the heat transferred to the system?`

1. 0

2.50 J/Kg

3.100 J/Kg

4.150 J/Kg

Posted Date:-2022-03-16 01:59:16

## Question: `The specific volume of a gas is 5 m3/Kg, at 25 Pa, H = 40 J/Kg and at 40 Pa, H = 90 J/Kg, what is the heat transferred to the system?`

1.-5 J/Kg

2.5 J/Kg

3.-25 J/Kg

4.25 J/Kg

Posted Date:-2022-03-16 01:59:40

## Question: `The specific volume of SO2 is 10 m3/Kg, at 5 Pa, H = 100 J/Kg and at 10 Pa, H = 250 J/Kg, what is the heat transferred to the system?`

1.100 J/Kg

2.150 J/Kg

3.250 J/Kg

4.350 J/Kg

Posted Date:-2022-03-16 01:58:54

## Question: `Three feeds, 10 mole with H = 15 J/mole, 20 mole with H = 5 J/mole and F1 with 20 J/mole, if enthalpy of the products is H = 15 J/mole, what is the value of F1?`

1.10 mole

2.20 mole

3.30 mole

4. 40 mole

Posted Date:-2022-03-15 19:04:39

## Question: `Three feeds, 10 mole with H = 5 J/mole, 10 mole with H = 15 J/mole and 5 mole with 20 J/mole, what is the enthalpy of the products?`

1.10 J/mole

2. 12 J/mole

3.15 J/mole

4. 24 J/mole

Posted Date:-2022-03-15 19:03:14

## Question: `Two feeds, 10 mole with 5 J/mole and 20 mole with 15 J/mole, product contains two streams, 5 mole with 10 J/mole and P with 25 J/mole, what is the value of P?`

1.10 mole

2.12 mole

3.15 mole

4. 18 mole

Posted Date:-2022-03-15 19:05:01

## Question: `Two feeds, 10 moles with H = 10 J/mole and 5 with H = 25 J/mole, what is the enthalpy of products?`

1.5 J/mole

2.10 J/mole

3.15 J/mole

4. 20 J/mole

Posted Date:-2022-03-15 19:02:09

## Question: `Two feeds, 15 moles with H = 10 J/mole and 10 with H = 20 J/mole, what is the enthalpy of products?`

1. 8 J/mole

2.12 J/mole

3.18 J/mole

4.25 J/mole

Posted Date:-2022-03-15 19:02:31

## Question: `Two feeds, F1 with H = 10 J/mole and 5 moles with H = 20 J/mole, if the mole of products is 10 what is the enthalpy of products?`

1.10 J/mole

2.15 J/mole

3.20 J/mole

4.25 J/mole

Posted Date:-2022-03-15 19:02:53

## Question: `Two feeds, F1 with H = 10 J/mole and F2 with H = 20 J/mole, and product 10 moles with H = 15 J/mole, what is the F1?`

1.5 mole

2.10 mole

3.15 mole

4.20 mole

Posted Date:-2022-03-15 19:01:42

## Question: `What is the energy balance of a closed system?`

1.Matter in the system is constant

2.Matter in the system is constant

3.Neither energy nor matter is constant

4.Both of energy and matter are constant

Posted Date:-2022-03-16 01:56:27

## Question: `What is the enthalpy change of a reaction at 30oC, if the enthalpy of reactant at 30oC and 25oC are 18 J and 15 J, and enthalpy of product at 30oC and 25oC are 10 J and 8 J, and the enthalpy change of reaction at 25oC is 45 J?`

1.10 J

2.25 J

3.50 J

4.100 J

Posted Date:-2022-03-16 01:55:02

## Question: `What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 18 J and 10 J, and enthalpy of product at 35oC and 25oC are 12 J and 8 J, and the enthalpy change of reaction at 25oC is 15 J?`

1.9 J

2.14 J

3.22 J

4.27 J

Posted Date:-2022-03-16 01:54:12

## Question: `What is the enthalpy change of a reaction at 35oC, if the enthalpy of reactant at 35oC and 25oC are 22 J and 15 J, and enthalpy of product at 35oC and 25oC are 10 J and 5 J, and the enthalpy change of reaction at 25oC is 36 J?`

1.12 J

2.24 J

3.36 J

4. 48 J

Posted Date:-2022-03-16 01:54:36

## Question: `What is the enthalpy change of a reaction at 45oC, if the enthalpy of reactant at 45oC and 25oC are 10 J and 6 J, and enthalpy of product at 45oC and 25oC are 15 J and 8 J, and the enthalpy change of reaction at 25oC is 10 J?`

1.14 J

2.21 J

3.27 J

4.34 J

Posted Date:-2022-03-16 01:53:49

## Question: `What is the enthalpy change of a reaction at 90oC, if the enthalpy of reactant at 90oC and 25oC are 60 J and 25 J, and enthalpy of product at 90oC and 25oC are 80 J and 10 J, and the enthalpy change of reaction at 25oC is 5 J?`

1.10 J

2.50 J

3. 110 J

4.150 J

Posted Date:-2022-03-16 01:55:30

## Question: `What is the enthalpy of a reaction, if the standard heat of formation of a compound is 10 J and sensible heat of the compound is 5 J?`

1.0

2.5 J

3.10 J

4.15 J

Posted Date:-2022-03-16 02:02:33

## Question: `What is the enthalpy of a reaction, if the standard heat of formation of a compound is 10 J, sensible heat of the compound is 30 J, and latent heat of the compound is 20 J?`

1. 10 J

2.30 J

3.40 J

4.60 J

Posted Date:-2022-03-16 02:03:40

## Question: `What is the enthalpy of a reaction, if the standard heat of formation of a compound is 15 J and sensible heat of the compound is 25 J?`

1.15 J

2.25 J

3.40 J

4. 50 J

Posted Date:-2022-03-16 02:02:53

## Question: `What is the enthalpy of a reaction, if the standard heat of formation of a compound is 15 J, sensible heat of the compound is 25 J, and latent heat of the compound is 10 J?`

1.25 J

2. 40 J

3. 50 J

4.65 J

Posted Date:-2022-03-16 02:03:17

## Question: `What is the enthalpy of reaction for C + O2 -> CO2, if the conversion of C is 50%, and heat of formation of C, O2, and CO2 are 0, 0 and 10 J.`

1. 5 J

2.10 J

3.15 J

4. 20 J

Posted Date:-2022-03-16 01:51:38

## Question: `What is the enthalpy of reaction for C2H4 + 3O2 -> 2CO2+ 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?`

1. 0

2.2 J

3.5 J

4.10 J

Posted Date:-2022-03-16 01:52:23

## Question: `What is the enthalpy of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the conversion of CH4 is 50%, and heat of formation of CH4, O2, CO2, and H2O are 10 J, 0, 6 J and 4 J?`

1.0

2. 2 J

3. 4 J

4. 6 J

Posted Date:-2022-03-16 01:52:02

## Question: `What is the enthalpy of reaction for CO2 + 4H2 -> 2H2O + CH4, if the conversion of CO2 is 50%, and heat of formation of CO2, H2, H2O, and CH4 are 6 J, 0, 4 J and 10 J?`

1. 2 J

2.5 J

3.6 J

4.9 J

Posted Date:-2022-03-16 01:52:58

## Question: `What is the enthalpy of the reaction from 25oC to 40oC if CP = 10 J/oC, and the reference enthalpy is 10 J?`

1.80 J

2.120 J

3. 160 J

4.200 J

Posted Date:-2022-03-16 02:03:59

## Question: `What is the heat of reaction for 2H2 + O2 -> 2H2O, if heat of formation of H2, O2, and H2O are 2 J, 5 J, and 10 J respectively?`

1. 2 J

2.5 J

3.8 J

4.11 J

Posted Date:-2022-03-16 01:50:09

## Question: `What is the heat of reaction for C2H4 + 3O2 -> 2CO2 + 2H2O, if heat of formation of C2H4, O2, CO2, and H2O are 10 J, 5 J, 6 J and 2 J respectively?`

1.-4 J

2.-2 J

3.0

4. 4 J

Posted Date:-2022-03-16 01:50:52

## Question: `What is the heat of reaction for C6H6 + 3H2 -> C6H12, if heat of formation of C6H6, H2, and C6H12 are 25 J, 5 J and 50 J respectively?`

1.10 J

2.20 J

3.30 J

4.35 J

Posted Date:-2022-03-16 01:51:16

## Question: `What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if heat of formation of CH4, O2, CO2 and H2O are 10 J, 5 J, 6 J, and 12 J respectively?`

1. -10 J

2. 10 J

3.-20 J

4.20 J

Posted Date:-2022-03-16 01:49:45

## Question: `What is the heat transferred to the system, if a change in enthalpy is 25 J and change in pressure is 5 Pa at volume 3 m3?`

1. 5 J

2.10 J

3. 15 J

4. 20 J

Posted Date:-2022-03-16 01:57:41

## Question: `What is the heat transferred to the system, if a change in internal energy is 10 J?`

1. 0

2.-10 J

3.10 J

4.Cannot be determined

Posted Date:-2022-03-16 01:56:49

## Question: `What is the heat transferred to the system, if change in enthalpy is 30 J and pressure, volume changed from 8 Pa, 5 m3 to 4 Pa, 12 m3?`

1.12 J

2.15 J

3.18 J

4.22 J

Posted Date:-2022-03-16 01:58:18

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