The escape velocity of a body on earth which is independent of its mass is about __________ km/second.

Question

The escape velocity of a body on earth which is independent of its mass is about __________ km/second.

A. 3

B. 7

C. 11

D. 15

Correct Answer :

C. 11

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Biological shield in a nuclear reactor is generally provided to protect against the

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Angular displacement can be measured suitably by a

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Pressure required to increase the density of water by about 1% is __________ atmosphere.

A. 10

B. 50

C. 200

D. 1000

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Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

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__________ property of steel increases by addition of large amount of silicon in it.

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Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

B. Copper

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A common disinfectant used in village wells for disinfection of water is

C. Iodine

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The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the __________ content in steel.

A. Carbon

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Pick out the correct statement.

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Broaching tools are usually made of

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In practice, the compression ratio of compression-ignition (CI) engine ranges from

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

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Steel & cast iron pipes are produced by __________ casting.

A. Slush

B. Die

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The phenomenon occurring during explosion of a hydrogen bomb is

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Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.

A. Copper

B. Steel

D. Brass

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__________ is not a case hardening process.

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__________ is the most important element, which controls the physical properties of steel.

C. Carbon

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__________ is not used as a material of construction in thermocouples.

A. Alumel

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Cold heading or upsetting is categorised as the __________ process.

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'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

A. Petrol

B. LPG

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Addition of silicon to cast iron

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Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

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Gas turbine normally employs a constant __________ cycle.

C. Volume

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The majority charge carriers in p-type silicon are

B. Ions

D. Holes

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The product (s) of roasting of a sulphide ore is (are)

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Magnesium is present in

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With increase in temperature, the electrical conductivity of semiconductors

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For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

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At absolute zero temperature, for any reaction involving condensed phases

Discuss this answer

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in __________ electrons.

Discuss this answer

Answer 1

A. α-rays

Answer 2

B. β-rays

Answer 3

C. Gamma rays & neutrons

Answer 4

D. Electrons

Answer 5

A. Shaft encoder

Answer 6

B. Linear variable differential transducer (LVDT)

Answer 7

C. Stroboscope

Answer 8

D. Tachometer

Answer 9

A. Anodising

Answer 10

B. Tempering

Answer 11

C. Carburising

Answer 12

D. Annealing

Answer 13

A. Mechanical

Answer 14

B. Machining

Answer 15

C. Magnetic

Answer 16

D. Refractory

Answer 17

A. Aluminium

Answer 18

C. Titanium

Answer 19

D. Stainless steel

Answer 20

A. Free chlorine

Answer 21

B. Bromine

Answer 22

D. Potassium permanganate

Answer 23

B. Manganese

Answer 24

C. Both 'a' nor 'b'

Answer 25

D. Neither 'a' nor 'b'

Answer 26

A. Hot worked materials are subjected to annealing to remove internal stresses

Answer 27

B. Annealing of steel hardens it slightly

Answer 28

C. Normalising of a material induces stresses

Answer 29

D. Tempering of a material improves ductility & toughness but reduces hardness & brittleness

Answer 30

A. Cermets

Answer 31

B. High speed steel

Answer 32

C. Tungsten carbide

Answer 33

D. Stellite

Answer 34

A. 15 to 25

Answer 35

B. 5 to 10

Answer 36

C. 40 to 55

Answer 37

D. 60 to 70

Answer 38

A. Almost same for all metals

Answer 39

B. Different for different metals

Answer 40

C. Less for low melting point metals

Answer 41

D. Less for high melting point metals

Answer 42

C. Investment

Answer 43

D. True centrifugal

Answer 44

A. Nuclear fission

Answer 45

B. Nuclear fusion

Answer 46

C. A combination of both nuclear fission & fusion

Answer 47

D. None of these

Answer 48

C. Aluminium

Answer 49

A. Carburising

Answer 50

B. Nitriding

Answer 51

C. Cyaniding

Answer 52

D. Annealing

Answer 53

A. Manganese

Answer 54

B. Silicon

Answer 55

D. Vanadium

Answer 56

B. Rhodium

Answer 57

C. Constantan

Answer 58

D. Duralumin

Answer 59

A. Extrusion

Answer 60

B. Bending

Answer 61

C. Rolling

Answer 62

D. Forging

Answer 63

C. Light hydrocarbon gases (e.g. butane or propane)

Answer 64

D. None of these

Answer 65

A. Promotes graphite module formation

Answer 66

B. Improves its ductility

Answer 67

C. Does not promote graphite flakes formation

Answer 68

D. Increases the fluidity of molten metal

Answer 69

A. Forging

Answer 70

B. Cold rolling

Answer 71

C. Hot rolling

Answer 72

D. Casting

Answer 73

A. Pressure

Answer 74

B. Temperature

Answer 75

D. None of these

Answer 76

A. Free electrons

Answer 77

C. Conduction electrons

Answer 78

A. Oxide only

Answer 79

B. Sulphate only

Answer 80

C. Oxide and sulphate

Answer 81

D. Dependent on temperature and partial pressure of oxygen & sulphur dioxide

Answer 82

A. Haemoglobin

Answer 83

B. Chlorophyll

Answer 84

C. Hypo solution

Answer 85

D. None of these

Answer 86

A. Increases

Answer 87

B. Decreases

Answer 88

C. Remain constant

Answer 89

D. Either (A) or (B), depends on the type of semi-conductor

Answer 90

A. Linearly

Answer 91

B. Exponentially

Answer 92

C. Logarithmically

Answer 93

D. Inversely

Answer 94

A. Δ G° = 0 , Δ H° = 0

Answer 95

B. Δ H° = 0 , Δ S° = 0

Answer 96

C. Δ S° = 0 , Δ E° = 0

Answer 97

D. Δ S° = 0 , Δ Cp° = 0

Answer 98

A. Lack of free

Answer 99

B. Excess of

Answer 100

C. Decrease in

Answer 101

D. None of these

The escape velocity of a body on earth which is independent of its mass is about __________ km/second.

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

Biological shield in a nuclear reactor is generally provided to protect against the

Angular displacement can be measured suitably by a

Pressure required to increase the density of water by about 1% is __________ atmosphere.

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?

__________ property of steel increases by addition of large amount of silicon in it.

Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

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__________ is not a case hardening process.

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