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

Question

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

Correct Answer :

B. 225.65

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A. X-rays

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A. Creep

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In a neutral solution

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A. Film

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Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

A. 1 : 1

B. 1 : 2

C. 2 : 1

D. 1 : 4

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The majority charge carriers in p-type silicon are

B. Ions

D. Holes

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Lead is poured into the joint between two __________ pipes.

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Tumbling is the process of improving the __________ of the materials/parts.

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Which of the following phenomenon/ phenomena is/are diffusion controlled?

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In a good rimming steel

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Most of the phosphorous present in the blast furnace burden enters into

C. Slag

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Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

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What is the pH of distilled water?

A. 0

B. 1

C. 7

D. 14

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About __________ ton of coke is required in a cupola to produce one ton of casting.

A. 0.03

B. 0.3

C. 0.8

D. 1.5

Discuss this answer

Answer 1

A. Carburising

Answer 2

B. Nitriding

Answer 3

C. Cyaniding

Answer 4

D. Annealing

Answer 5

A. Thermit

Answer 6

B. Electrical resistance

Answer 7

C. Oxy-acetylene

Answer 8

D. Any of these

Answer 9

A. Ammonium phosphate

Answer 10

B. Calcium phosphate

Answer 11

C. Animal charcoal

Answer 12

D. Ammonium sulphate

Answer 13

A. Atomisation

Answer 14

B. Grinding/milling

Answer 15

C. Hammering

Answer 16

D. Electrolytic deposition

Answer 17

C. Top bolt

Answer 18

D. None of these

Answer 19

A. pH value

Answer 20

B. Electrical conductivity

Answer 21

C. Turbidity

Answer 22

D. Dissolved oxygen content

Answer 23

A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation

Answer 24

B. Suitable coating or vapour additive is used to promote film wise condensation

Answer 25

C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it

Answer 26

D. Reynolds number of condensing liquid is based on its mass flow rate

Answer 27

A. Upward thrust due to air

Answer 28

B. Viscous force exerted by air

Answer 29

C. Surface tension effects of water

Answer 30

D. Force of gravity

Answer 31

A. Decreasing the surface area of the electrodes

Answer 32

B. Increasing the concentration of zinc sulphate solution

Answer 33

C. Increasing the surface area of the electrodes

Answer 34

D. Increasing the concentration of copper sulphate solution

Answer 35

A. Improve machinability & tensile strength

Answer 36

B. Remove internal stresses

Answer 37

C. Refine the structure

Answer 38

D. Remove strains caused by cold working

Answer 39

B. γ-rays

Answer 40

C. α-rays

Answer 41

D. β-rays

Answer 42

A. Formability

Answer 43

B. Yield strength

Answer 44

C. Toughness

Answer 45

D. Resilience

Answer 46

B. Tension

Answer 47

C. Compression

Answer 48

D. Endurance

Answer 49

A. H⁺ ions are absent

Answer 50

B. OH^- ions are absent

Answer 51

C. Both H⁺ and OH^- ions are present in very small but equal concentration

Answer 52

D. None of these

Answer 53

B. Nucleate

Answer 54

C. Transition

Answer 55

D. All modes of

Answer 56

A. Free electrons

Answer 57

C. Conduction electrons

Answer 58

A. Mild steel

Answer 59

B. Concrete

Answer 60

C. Cast iron

Answer 61

D. Asbestos cement

Answer 62

A. Surface finish

Answer 63

B. Fatigue limit

Answer 64

C. Creep limit

Answer 65

D. Surface cleanliness

Answer 66

A. Dislocation climb

Answer 67

B. Cross-slip

Answer 68

C. Twinning

Answer 69

D. Recrystallisation

Answer 70

A. Oxidising and basic slag

Answer 71

B. Reducing and basic slag

Answer 72

C. High activity co-efficient of phosphorous in metal

Answer 73

D. Oxidising and neutral slag

Answer 74

A. Carbon and silicon should be low

Answer 75

B. Silicon should be low but carbon should be high

Answer 76

C. Both silicon & carbon should be high

Answer 77

D. Silicon should be high but carbon should be low

Answer 78

A. Hot metal

Answer 79

B. Flue gases

Answer 80

D. Refractory lining

Answer 81

A. Hexagonal close, packed (hcp)

Answer 82

B. Face centred cubic (fcc)

Answer 83

C. Body centred cubic (bcc)

Answer 84

D. Simple cubic

Answer 85

A. Made of glass fibre and thermoplastic resins

Answer 86

B. Anisotropic

Answer 87

C. Made of thermosetting resin and glass fibre

Answer 88

D. Both 'b' & 'c'

Answer 89

A. Can be determined only experimentally

Answer 90

B. Can be determined from the stoichiometry of the reaction

Answer 91

C. Cannot be zero

Answer 92

D. Can be fractional

Answer 93

A. Profit maximisation

Answer 94

B. Customer satisfaction

Answer 95

C. Cost reduction

Answer 96

D. Process improvement

Answer 97

A. Spherical

Answer 98

B. Nodular

Answer 99

C. Irregular

Answer 100

D. No preferred shape

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

__________ is not a case hardening process.

Chromium molybdenum steel cannot be welded using __________ welding.

Main constituent of bone ash is

Powder metallurgy process does not make metal powder by

Which of the following fastening devices has a head at one end and a nut fitted to the other?

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Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.

Most important property of steels for use in automobile bodies is the

Yield strength of a material is determined by the __________ test.

In a neutral solution

Even though heat transfer co-efficient in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of

The majority charge carriers in p-type silicon are

Lead is poured into the joint between two __________ pipes.

Tumbling is the process of improving the __________ of the materials/parts.

Which of the following phenomenon/ phenomena is/are diffusion controlled?

Dephosphorization of molten pig iron is favoured by

In a good rimming steel

Most of the phosphorous present in the blast furnace burden enters into

Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

Fibre reinforced plastic (FRP) are

The order of a chemical reaction

The most important consideration in value engineering is the

What is the pH of distilled water?

For preparation of porous bearings by powder metallurgy, preferred particle shape is

About __________ ton of coke is required in a cupola to produce one ton of casting.

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