An alloy of Fe - 0.4 % C is

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An alloy of Fe - 0.4 % C is

A. Cast iron

B. Hypo-eutectoid steel

C. Hyper-eutectoid steel

D. Eutectoid steel

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X-rays are

A. Positively charged

B. Negatively charged

C. Neutral

D. Of higher wavelength than visible light

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Nitriding of a steel part does not increase its

A. Grain size

B. Fatigue limit

C. Surface hardness

D. Wear resistance

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In multipass welds, shot peening is done after each pass to

A. Close the surface porosity

B. Break the continuity of columnar grains

C. Flatten the weldment

D. Introduce texture in the weld

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

A. Air

B. Oxygen

C. Liquid medium

D. Gaseous medium

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In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be

A. Higher, as it gives higher wavelength

B. Lower, as it gives higher wavelength

C. Higher, as it gives shorter wavelength

D. Lower, as it gives shorter wavelength

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

A. Oxide only

B. Sulphate only

C. Oxide and sulphate

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

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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.

A. μ , α and θ all have units of m/s

B. μ , α and θ all have units of m2/s

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

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

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Compressed dry air is used as the cutting fluid, while machining

A. Steel

B. Cast iron

C. Aluminium

D. None of these

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In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

A. Range is 15°F

B. Approach is 10°F

C. Both (A) & (B)

D. Neither (A) nor (B)

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Nickel is a __________ material.

A. Ferromagnetic

B. Semi-conductor

C. Paramagnetic

D. Ferroelectric

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Thermal efficiency of an internal combustion engine is around __________ percent.

A. 8

B. 35

C. 65

D. 80

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Nickel and __________ are the alloying element added in steel to increase its toughness.

A. Molybdenum

B. Chromium

C. Vanadium

D. Silicon

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The most important requirement for aluminium industry is the availability of cheap

A. Ore

B. Electrical power

C. Labour

D. Abundant water

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Austempering process results in the formation of __________ structure.

A. Martensitic

B. Bainitic

C. Carburised

D. Stressed

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The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

A. Decreasing the surface area of the electrodes

B. Increasing the concentration of zinc sulphate solution

C. Increasing the surface area of the electrodes

D. Increasing the concentration of copper sulphate solution

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Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

A. 9,100

B. 13,000

C. 7,000

D. 2,550

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Diamagnetic materials

A. Are magnetised by eddy currents only

B. Are non-magnetic and cannot be magnetised

C. Are magnetised in direction opposite to the magnetic field

D. Can be magnetised in one direction only

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Moist climate is the most favourable factor in the site selection far a

A. Steel plant

B. Textile factory

C. Petroleum refinery

D. Coke oven battery

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Superheating of steam is done at constant

A. Enthalpy

B. Entropy

C. Pressure

D. Volume

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Steel balls are manufactured by

A. Sintering

B. Casting

C. Cold heading

D. Spinning

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The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

A. 25

B. 35

C. 55

D. 75

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The two elements required to form substitutional solid solution should not have

A. Same crystalline structure

B. Same valency

C. Widely differing electronegativity

D. Same atomic sizes

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For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

A. Increases

B. Decreases

C. Remain constant

D. Increases to a maximum before decreasing

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

A. Boiler

B. Condenser

C. Evaporator

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

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Baffles provided on the shell side of a shell and tube heat exchanger are meant for

A. Providing support for the tubes

B. Improving heat transfer

C. Both 'a' & 'b'

D. Preventing the fouling of tubes & stagnation of shell side fluid

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Cascade control is

A. The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller

B. Used when changes in process conditions cause serious upsets in the controlled variable

C. Useful to control flow from temperature

D. All 'a', 'b' & 'c'

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The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

A. 159

B. 1837

C. 2537

D. 10000

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The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

A. Full annealing

B. Bright annealing

C. Patenting

D. None of these

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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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For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

A. Propane and acetylene

B. Propane and LPG

C. Sewage gas and gobar gas

D. B.F gas and coke oven gas

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Accepted Answer

B. Hypo-eutectoid steel

An alloy of Fe - 0.4 % C is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

X-rays are

Nitriding of a steel part does not increase its

In multipass welds, shot peening is done after each pass to

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

In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be

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

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.

Compressed dry air is used as the cutting fluid, while machining

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Nickel is a __________ material.

Thermal efficiency of an internal combustion engine is around __________ percent.

Nickel and __________ are the alloying element added in steel to increase its toughness.

The most important requirement for aluminium industry is the availability of cheap

Austempering process results in the formation of __________ structure.

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

Diamagnetic materials

Moist climate is the most favourable factor in the site selection far a

Superheating of steam is done at constant

Steel balls are manufactured by

The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

The two elements required to form substitutional solid solution should not have

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

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

Baffles provided on the shell side of a shell and tube heat exchanger are meant for

Cascade control is

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

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

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?

Also checkout

An alloy of Fe - 0.4 % C is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

X-rays are

Nitriding of a steel part does not increase its

In multipass welds, shot peening is done after each pass to

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

In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be

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

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.

Compressed dry air is used as the cutting fluid, while machining

In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the

Nickel is a __________ material.

Thermal efficiency of an internal combustion engine is around __________ percent.

Nickel and __________ are the alloying element added in steel to increase its toughness.

The most important requirement for aluminium industry is the availability of cheap

Austempering process results in the formation of __________ structure.

The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by

Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?

Diamagnetic materials

Moist climate is the most favourable factor in the site selection far a

Superheating of steam is done at constant

Steel balls are manufactured by

The approximate height of a blast furnace having a useful volume of 2000 m3 is about __________ metres

The two elements required to form substitutional solid solution should not have

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always

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

Baffles provided on the shell side of a shell and tube heat exchanger are meant for

Cascade control is

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is

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

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm3) while the C.V. is same on weight basis (i.e., kcal/kg)?

Also checkout

The emf of a Deniell cell Zn | Zn²⁺ || Cu²⁺ | Cu can be increased by

The approximate height of a blast furnace having a useful volume of 2000 m³ is about __________ metres

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg)?