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

Question

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

A. 25

B. 45

C. 65

D. 20

Correct Answer :

D. 20

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In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

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Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

Discuss this answer

A jet engine turbine blade is normally manufactured by

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A reduction in thermal resistance during heat transfer does not occur in the

Discuss this answer

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

Discuss this answer

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm².

A. 273.15

B. 225.65

C. 100.03

D. 373.15

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An example of unsteady non uniform flow is the flow of liquid under pressure through a

Discuss this answer

Case hardening of a material is

Discuss this answer

For grinding of softer materials, the grinding wheel should have __________ grain size.

A. Finer

C. Medium

Discuss this answer

Magnesium is present in

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Heat release during phase change is observed in case of a/an

A. Boiler

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Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

Discuss this answer

Cold heading or upsetting is categorised as the __________ process.

Discuss this answer

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

Discuss this answer

Lead is poured into the joint between two- __________ pipes.

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

B. Shear

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Drossing is a __________ operation.

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The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong

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Matte smelting is used in the extraction of

A. Lead

B. Zinc

D. Copper

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Out of the following, the most malleable material is

A. Copper

D. Lead

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Which of the following commonly used condenser tube materials has the lowest thermal conductivity?

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Liquor poisoning generally occurs due to the presence of __________ in it.

Discuss this answer

The 'laughing gas' is

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Methyl orange indicator turns

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A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

A. Steel

B. Glass

C. Rubber

D. Brass

Discuss this answer

Minimum number of members required to form a Public Limited Joint Stock Com-pany is

A. 7

B. 10

C. 12

D. 17

Discuss this answer

Projection welding & stud welding is categorised as the __________ welding.

D. Arc

Discuss this answer

Propulsion of rocket follows from the

Discuss this answer

Super conduction in metals is observed at a temperature of __________ °K.

A. <100

B. >100

Discuss this answer

Out of the following, the __________ pipe has the least corrosion resistance.

B. Copper

Discuss this answer

Answer 1

A. Zirconia

Answer 2

B. Alumina

Answer 3

C. Bakelite

Answer 4

D. Tungsten carbide

Answer 5

A. Output & fineness

Answer 6

B. Velocity

Answer 7

C. Both (A) & (B)

Answer 8

D. None of these

Answer 9

A. Forging

Answer 10

B. Shell moulding

Answer 11

C. Investment casting

Answer 12

D. Pressure die casting

Answer 13

A. Convection heat transfer by stirring the fluid and cleaning the heating surface

Answer 14

B. Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity

Answer 15

C. Radiation heat transfer by increasing the temperature and reducing the emissivity

Answer 16

D. None of these

Answer 17

A. A₁ is more alkaline than solution A₂

Answer 18

B. A₁ is highly acidic

Answer 19

C. A₂ is very slightly acidic

Answer 20

D. Both (B) & (C)

Answer 21

A. Tapering pipe at constant flow rate

Answer 22

B. Tapering pipe at either decreasing or increasing flow rate

Answer 23

C. Long pipeline of constant diameter

Answer 24

D. None of these

Answer 25

A. Followed by tempering or carburising

Answer 26

B. Preceded by its tempering

Answer 27

C. Done to get a soft ductile interior with a very hard surface

Answer 28

D. Carried out to get extreme hardness in its core

Answer 29

B. Coarser

Answer 30

D. Any type of

Answer 31

A. Haemoglobin

Answer 32

B. Chlorophyll

Answer 33

C. Hypo solution

Answer 34

D. None of these

Answer 35

B. Condenser

Answer 36

C. Evaporator

Answer 37

D. All (A), (B) & (C)

Answer 38

A. Below the yield point

Answer 39

B. Above the yield point

Answer 40

C. Below the elastic limit

Answer 41

D. At the elastic limit

Answer 42

A. Extrusion

Answer 43

B. Bending

Answer 44

C. Rolling

Answer 45

D. Forging

Answer 46

A. Ability to absorb shock

Answer 47

B. Capacity to store energy

Answer 48

C. Ratio of the wire & coil diameters

Answer 49

D. Load to produce unit deflection

Answer 50

A. Mild steel

Answer 51

B. Concrete

Answer 52

C. Cast iron

Answer 53

D. Asbestos cement

Answer 54

A. Tension

Answer 55

C. Compression

Answer 56

D. Bending & tension

Answer 57

A. Smelting

Answer 58

B. Dressing

Answer 59

C. Roasting

Answer 60

D. Dressing

Answer 61

A. Base and strong acid

Answer 62

B. Base and weak acid

Answer 63

C. Acid and weak base

Answer 64

D. None of these

Answer 65

C. Aluminium

Answer 66

B. Aluminium

Answer 67

C. Wrought iron

Answer 68

A. Admiralty brass

Answer 69

B. Stainless steel

Answer 70

C. Aluminium brass

Answer 71

D. Titanium

Answer 72

A. Ethyl alcohol

Answer 73

B. Impurities

Answer 74

C. Methyl alcohol

Answer 75

D. Carbonic acid

Answer 76

A. Nitrous oxide

Answer 77

B. Nitric oxide

Answer 78

C. Nitrogen trioxide

Answer 79

D. Nitrogen pentoxide

Answer 80

A. Orange yellow in alkaline medium

Answer 81

B. Orange yellow in acidic medium

Answer 82

C. Colourless in acidic medium

Answer 83

D. Colourless in basic medium

Answer 84

A. Pressure

Answer 85

B. Thermit

Answer 86

C. Resistance

Answer 87

A. Newton's second law of motion

Answer 88

B. Newton's third law of motion

Answer 89

C. Law of projectiles

Answer 90

D. Archimedes principle

Answer 91

C. About 273

Answer 92

D. About 373

Answer 93

A. Mild steel

Answer 94

C. Cast iron

Answer 95

D. Wrought iron

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

A jet engine turbine blade is normally manufactured by

A reduction in thermal resistance during heat transfer does not occur in the

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm².

An example of unsteady non uniform flow is the flow of liquid under pressure through a

Case hardening of a material is

For grinding of softer materials, the grinding wheel should have __________ grain size.

Magnesium is present in

Heat release during phase change is observed in case of a/an

Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

Cold heading or upsetting is categorised as the __________ process.

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

Lead is poured into the joint between two- __________ pipes.

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

Drossing is a __________ operation.

The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong

Matte smelting is used in the extraction of

Out of the following, the most malleable material is

Which of the following commonly used condenser tube materials has the lowest thermal conductivity?

Liquor poisoning generally occurs due to the presence of __________ in it.

The 'laughing gas' is

Methyl orange indicator turns

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Minimum number of members required to form a Public Limited Joint Stock Com-pany is

Projection welding & stud welding is categorised as the __________ welding.

Propulsion of rocket follows from the

Super conduction in metals is observed at a temperature of __________ °K.

Out of the following, the __________ pipe has the least corrosion resistance.

Also checkout

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

A jet engine turbine blade is normally manufactured by

A reduction in thermal resistance during heat transfer does not occur in the

Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution

The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm2.

An example of unsteady non uniform flow is the flow of liquid under pressure through a

Case hardening of a material is

For grinding of softer materials, the grinding wheel should have __________ grain size.

Magnesium is present in

Heat release during phase change is observed in case of a/an

Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails

Cold heading or upsetting is categorised as the __________ process.

The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the

Lead is poured into the joint between two- __________ pipes.

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

Drossing is a __________ operation.

The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong

Matte smelting is used in the extraction of

Out of the following, the most malleable material is

Which of the following commonly used condenser tube materials has the lowest thermal conductivity?

Liquor poisoning generally occurs due to the presence of __________ in it.

The 'laughing gas' is

Methyl orange indicator turns

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

Minimum number of members required to form a Public Limited Joint Stock Com-pany is

Projection welding & stud welding is categorised as the __________ welding.

Propulsion of rocket follows from the

Super conduction in metals is observed at a temperature of __________ °K.

Out of the following, the __________ pipe has the least corrosion resistance.

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The critical pressure at which the latent heat of vaporisation of steam becomes zero is __________ Kg/cm².