Increasing sulphur content in pig iron tends to make it

Question

Increasing sulphur content in pig iron tends to make it

A. Soft

B. Hard

C. Tough

Correct Answer :

B. Hard

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Which one is neutral in character?

B. N₂O

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Gantt charts are used for streamlining the

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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

Discuss this answer

Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about

A. 9 : 1

B. 17 : 1

C. 23 : 1

D. 29 : 1

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'Cryogenics' is concerned with the generation & use of low temperature in the range of

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In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be

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Brinell Hardness Number (BHN) for talc is approximately in the range of

A. 1-5

B. 20-30

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Property responsible for the talcum powder to cling to the skin is the

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On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.

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Spheroidising of a material is a/an __________ process.

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For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot?

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

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Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

A. Atoms

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According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is

A. 180°

B. 212°

C. 32°

D. 273°

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The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of __________ mm.

A. 0.001

B. 0.01

C. 0.002

D. 0.02

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The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.

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Uniform ramming of sand in green sand moulding process leads to

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During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to

A. Time

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In Imperial Smelting Process for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following:

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

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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?

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

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Out of the following the refractive index is the highest for

A. Glass

C. Brine

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Euler number is defined as the ratio of inertia force to __________ force.

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All of the following alloying elements of steel increases hardness but sacrifice ductility, except

A. Nickel

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__________ test is the appropriate test to determine whether a material is ductile or brittle.

A. Impact

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Magnesium is present in

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Lead is added to 60:40 brass primarily to improve

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The unit of gc is

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In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.

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Answer 1

D. Ductile & malleable

Answer 2

A. N₂O₄

Answer 3

C. N₂O₅

Answer 4

D. N₂O₃

Answer 5

A. Inventory control

Answer 6

B. Production schedule

Answer 7

C. Sales forecasting

Answer 8

D. Quality control

Answer 9

A. 10 atm-1

Answer 10

B. 105 atm-1

Answer 11

C. 10 (dimensionless)

Answer 12

D. 105 (dimensionless)

Answer 13

A. 0°K to 123°K

Answer 14

B. 0°C to - 123°C

Answer 15

C. 0°C to - 273°C

Answer 16

D. 0°K to 273°K

Answer 17

A. ΔQ = 0, ΔS=0

Answer 18

B. ΔQ = 0, ΔS = +ve

Answer 19

C. ΔQ = 0, ΔS = -ve

Answer 20

D. ΔQ = +ve, ΔS= +ve

Answer 21

C. 100-150

Answer 22

D. 200-250

Answer 23

A. Capillary action

Answer 24

B. Adhesion

Answer 25

C. Cohesion

Answer 26

D. Surface tension

Answer 27

A. Frequency

Answer 28

B. Amplitude

Answer 29

C. Damping

Answer 30

D. None of these

Answer 31

A. Normalising

Answer 32

B. Annealing

Answer 33

C. Tempering

Answer 34

D. Hardening

Answer 35

A. Temperature - entropy

Answer 36

B. Temperature - pressure

Answer 37

C. Enthalpy - entropy

Answer 38

D. Enthalpy-pressure

Answer 39

A. Linearly

Answer 40

B. Exponentially

Answer 41

C. Logarithmically

Answer 42

D. Inversely

Answer 43

B. Neutrons

Answer 44

C. Nucleons

Answer 45

D. Electrons

Answer 46

A. Elastic

Answer 47

B. Ultimate

Answer 48

C. Yielding

Answer 49

D. Breaking

Answer 50

A. Reduced chance of gas porosity

Answer 51

B. Greater dimensional stability of the casting

Answer 52

C. Uniform flow of molten metal into the mould cavity

Answer 53

D. Less sand expansion type of casting defect

Answer 54

B. Square root of time

Answer 55

C. Square of time

Answer 56

D. Cube of time

Answer 57

A. Jet of water at high pressure

Answer 58

B. Blast of air

Answer 59

C. Mixture of water and air

Answer 60

D. Rain of molten lead

Answer 61

A. Temperature is low

Answer 62

B. Atmospheric pressure is low

Answer 63

C. Atmospheric pressure is high

Answer 64

D. None of these

Answer 65

A. Emissivity of pipe surface

Answer 66

B. Diameter & length of the pipe

Answer 67

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

Answer 68

D. None of these

Answer 69

A. Stiffness

Answer 70

B. Malleability

Answer 71

C. Creep resistance

Answer 72

D. Tensile strength

Answer 73

B. Diamond

Answer 74

D. Kerosene

Answer 75

A. Pressure

Answer 76

B. Elastic

Answer 77

C. Gravity

Answer 78

D. Viscous

Answer 79

B. Vanadium

Answer 80

C. Molybdenum

Answer 81

D. Chromium

Answer 82

B. Cupping

Answer 83

C. Hardness

Answer 84

D. Tensile

Answer 85

A. Haemoglobin

Answer 86

B. Chlorophyll

Answer 87

C. Hypo solution

Answer 88

D. None of these

Answer 89

A. Machinability

Answer 90

B. Corrosion resistance

Answer 91

C. Fluidity

Answer 92

D. Strength

Answer 93

A. lb_m/lb_f. ft/sec²

Answer 94

B. lb_f/lb_m. ft/sec²

Answer 95

C. ft/sec²

Answer 96

D. lb_m/lb_f. sec²/ft

Answer 97

A. μ , α and θ all have units of m/s

Answer 98

B. μ , α and θ all have units of m2/s

Answer 99

C. α and θ have units of m2/s, while μ has unit of m/s

Answer 100

D. α and θ have units of m/s, while μ has unit of m2/s

Increasing sulphur content in pig iron tends to make it

Correct Answer :

Show all Chemical Engineering Basics MCQ

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