Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Question

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

A. 10^-3

B. 10³

C. 10^-15

Correct Answer :

A. 10^-3

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C. Nickel

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D. Weight

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D. Volume

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If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

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The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

A. Hard

B. Soft

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Change in volume of metals from absolute zero temperature to their melting points is

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Electrochemical corrosion can occur, only if __________ is present in contact with metal.

A. Air

B. Oxygen

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__________ stress cannot be sustained by a fluid in equilibrium.

A. Shear

Discuss this answer

__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

Discuss this answer

__________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

C. Impact

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

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Which of the following terminology is used for the temperature at which new grains are formed in a metal?

Discuss this answer

Young's modulus of a material is the measure of its

Discuss this answer

Pick out the wrong statement.

Discuss this answer

Which of the following has the least value of ultimate tensile strength (UTS)?

Discuss this answer

Globular form of cementite is formed during the __________ process.

Discuss this answer

Optical activity is a/an __________ property.

Discuss this answer

Cementite is in the lamellar form in the __________ phase of steel.

Discuss this answer

A solar cell converts the sunlight directly into __________ energy.

Discuss this answer

The swift cup test evaluates the following property of a sheet metal.

Discuss this answer

Silicon percentage in silicon steel used for electrical equipments is about

A. 1

B. 4.0

C. 8

D. 14

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Routing in production, planning & control is concerned with the

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Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Discuss this answer

Which of the following is the correct nature of shear stress distribution along the cross section in a horizontal circular pipe under steady state fluid flow condition?

A.

B.

C.

D.

Discuss this answer

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

Discuss this answer

Isotropic materials have the same __________ in all directions.

Discuss this answer

Glass reacts with

B. HF

C. HNO₃

Discuss this answer

Answer 1

D. 10¹⁵

Answer 2

A. Manganese

Answer 3

B. Silicon

Answer 4

D. Chromium

Answer 5

A. Turbulent

Answer 6

B. Viscous

Answer 7

C. Gravity

Answer 8

D. Pressure

Answer 9

A. Flow output

Answer 10

B. Head developed

Answer 11

C. Overall efficiency

Answer 12

A. Precipitation of fine alloy carbides at high temperatures

Answer 13

B. Refinement of ferrite grain size by working

Answer 14

C. Decomposition of retained austenite upon heat treatment

Answer 15

D. Precipitation of complex inter-metallic upon heat treatment

Answer 16

A. Enthalpy

Answer 17

B. Entropy

Answer 18

C. Pressure

Answer 19

A. Critical

Answer 20

B. Breeder

Answer 21

C. Fertile

Answer 22

D. Heterogeneous

Answer 23

A. Blow off cock

Answer 24

B. Feed check valve

Answer 25

C. Feed water pump

Answer 26

D. Stop valve

Answer 27

C. Silicon carbide

Answer 28

D. Aluminium oxide

Answer 29

A. Almost same for all metals

Answer 30

B. Different for different metals

Answer 31

C. Less for low melting point metals

Answer 32

D. Less for high melting point metals

Answer 33

C. Liquid medium

Answer 34

D. Gaseous medium

Answer 35

B. Tensile

Answer 36

C. Compressive

Answer 37

D. None of these

Answer 38

A. Veneering

Answer 39

B. Galvanising

Answer 40

C. Electroplating

Answer 41

D. Calorising

Answer 42

A. Tensile

Answer 43

B. Fatigue

Answer 44

D. None of these

Answer 45

A. Ammonium hydroxide

Answer 46

B. Sodium carbonate

Answer 47

C. Sodium hydroxide

Answer 48

D. Ammonium carbonate

Answer 49

A. Eutectic temperature

Answer 50

B. Lower critical temperature

Answer 51

C. Recrystallisation temperature

Answer 52

D. Upper critical temperature

Answer 53

A. Stiffness

Answer 54

B. Malleability

Answer 55

C. Creep resistance

Answer 56

D. Tensile strength

Answer 57

A. A soft magnetic material should have high permeability and small area of hysteresis loop

Answer 58

B. Poisson's ratio of high melting point metals is more than unity

Answer 59

C. Solders generally melt at less than 185°C

Answer 60

D. Steel produced by B.O.F process is ideally suited for manufacturing flat product

Answer 61

A. Medium carbon steel

Answer 62

B. High carbon steel

Answer 63

C. Cast iron

Answer 64

D. Wrought iron

Answer 65

A. Spheroidising

Answer 66

B. Hardening

Answer 67

C. Annealing

Answer 68

D. Normalising

Answer 69

A. Additive

Answer 70

B. Constitutive

Answer 71

C. Both (A) & (B)

Answer 72

D. Neither (A) nor (B)

Answer 73

A. Martenistic

Answer 74

B. Bainitic

Answer 75

C. Pearlitic

Answer 76

D. Ferritic

Answer 77

A. Thermal

Answer 78

B. Electrical

Answer 79

C. Mechanical

Answer 80

D. Chemical

Answer 81

A. Stretchability

Answer 82

B. Drawability

Answer 83

C. Bendability

Answer 84

D. None of these

Answer 85

A. Sequence of operation to be performed

Answer 86

B. Progress of work performed

Answer 87

C. Authorisation of work to be performed

Answer 88

D. Balancing of load on machines

Answer 89

A. Emissivity of pipe surface

Answer 90

B. Diameter & length of the pipe

Answer 91

C. Temperature of hot pipe surface & that of air in the room

Answer 92

D. None of these

Answer 93

A. Surface finish

Answer 94

B. Fatigue limit

Answer 95

C. Creep limit

Answer 96

D. Surface cleanliness

Answer 97

A. Induced stresses

Answer 98

B. Density

Answer 99

C. Elastic properties

Answer 100

D. Thermal properties

Answer 101

A. H₂SO₃

Answer 102

D. K₂Cr₂O₇

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

__________ fluid force is not considered in the Navier-Stokes equation.

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

Secondary hardening in steels arises out of the

Superheating of steam is done at constant

If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

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__________ stress cannot be sustained by a fluid in equilibrium.

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__________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

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Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Which of the following is the correct nature of shear stress distribution along the cross section in a horizontal circular pipe under steady state fluid flow condition?

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Also checkout

Electrical conductivities of semi-conductors are of the order of __________ ohm/cm.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

__________ fluid force is not considered in the Navier-Stokes equation.

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

Secondary hardening in steels arises out of the

Superheating of steam is done at constant

If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

Which of the following is a boiler accessory i.e., not a boiler mounting?

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.

Change in volume of metals from absolute zero temperature to their melting points is

Electrochemical corrosion can occur, only if __________ is present in contact with metal.

__________ stress cannot be sustained by a fluid in equilibrium.

__________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.

__________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

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

Which of the following terminology is used for the temperature at which new grains are formed in a metal?

Young's modulus of a material is the measure of its

Pick out the wrong statement.

Which of the following has the least value of ultimate tensile strength (UTS)?

Globular form of cementite is formed during the __________ process.

Optical activity is a/an __________ property.

Cementite is in the lamellar form in the __________ phase of steel.

A solar cell converts the sunlight directly into __________ energy.

The swift cup test evaluates the following property of a sheet metal.

Silicon percentage in silicon steel used for electrical equipments is about

Routing in production, planning & control is concerned with the

Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?

Which of the following is the correct nature of shear stress distribution along the cross section in a horizontal circular pipe under steady state fluid flow condition?

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

Isotropic materials have the same __________ in all directions.

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