BE Chemical Engineering Multiple Choice Questions - Set 07

Practice Test: Question Set - 07

---

1. Corona discharge is related to the operation of a/an

(A) Induction motor

(B) Electrostatic precipitator

(C) Fast breeder reactor

(D) Magneto hydrodynamic generator (MHD)

Answer: Option B

---

2. With increase in annealing temperature, the following defect density decreases.

(A) Vacancy

(B) Dislocation

(C) Grain boundary

(D) All of these

Answer: Option D

---

3. Minimum thermal efficiency of a steam boiler may be around __________ percent

(A) 25

(B) 45

(C) 65

(D) 20

Answer: Option D

---

4. The leaching solvent used in Baeyer's process for the purification of bauxite is

(A) Ammonium hydroxide

(B) Sodium carbonate

(C) Sodium hydroxide

(D) Ammonium carbonate

Answer: Option B

---

5. Eutectic reaction for iron-carbon system occurs at a temperature of _________ °C.

(A) 723

(B) 959

(C) 1147

(D) 1493

Answer: Option A

---

6. Boiling point of water gets lowered at high altitudes (e.g., hills), because

(A) Temperature is low

(B) Atmospheric pressure is low

(C) Atmospheric pressure is high

(D) None of these

Answer: Option B

---

7. Consider the equilibrium A_(g) + B_(g) = AB_(g). When the partial pressure of A is 10^-2 atm, the partial pressure of B is 10^-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is

(A) 10 atm^-1

(B) 10⁵ atm^-1

(C) 10 (dimensionless)

(D) 10⁵ (dimensionless)

Answer: Option B

---

8. The process of removal of scale formed during hot rolling of steel is termed as

(A) Descaling

(B) Shot blasting

(C) Pickling

(D) Skimming

Answer: Option C

---

9. Tesla meter per ampere (T. m/A) is the unit for the measurement of

(A) Magnetic susceptibility

(B) Magnetic moment

(C) Permeability of free space

(D) Flux density

Answer: Option C

---

10. Alcohols are not suitable as diesel engine fuel because the cetane number of alcohols is

(A) Very low which prevents their ignition by compression

(B) Very high which prevents their ignition by compression

(C) Zero

(D) None of these

Answer: Option A

---

11. The joint for soldering is supported by binding wire made of

(A) Mild steel

(B) Copper

(C) Soft iron

(D) Stainless steel

Answer: Option C

---

12. Which of the following is used to produce draught in the locomotive boilers?

(A) Chimney

(B) Induced draught fan

(C) Forced draught fan

(D) Steam jet arrangement

Answer: Option D

---

13. The bolt is subjected to _________ when the nut is tightened by putting the washer beneath it.

(A) Tension

(B) Shear

(C) Compression

(D) Bending & tension

Answer: Option A

---

14. Which of the following materials has the least scrap value?

(A) Aluminium

(B) Stainless steel

(C) Brass

(D) Copper

Answer: Option B

---

15. Temperature profile along the length of a gas-gas counter flow heat exchanger is correctly represented by

Answer: Option A

---

View All Answers

01. Answer: Option B
02. Answer: Option D
03. Answer: Option D
04. Answer: Option B
05. Answer: Option A
06. Answer: Option B
07. Answer: Option B
08. Answer: Option C
09. Answer: Option C
10. Answer: Option A
11. Answer: Option C
12. Answer: Option D
13. Answer: Option A
14. Answer: Option B
15. Answer: Option A

---

 Next Tests:

Set 01

Set 02

Set 03

Set 04

Set 05

Set 06

Set 07

Set 08

Set 09

Set 10

Set 11

Set 12

Set 13

Set 14

Set 15

Set 16

Set 17

Set 18

Set 19

Set 20

Set 21

Set 22

Set 23

Set 24

Set 25

Set 26

Set 27

Set 28

Set 29

Set 30

Set 31

Set 32

Set 33

Set 34

Set 35

Set 36

Set 37

Set 38

Set 39

Set 40

Set 41

Set 42

Set 43

Set 44

Set 45

Set 46

Set 47

Set 48

Set 49

Set 50

Set 51

Set 52

Set 53

Set 54

Set 55

Set 56

Set 57

Set 58

Set 59