The most commonly used moderator in nuclear power plants is

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The most commonly used moderator in nuclear power plants is

A. Graphite

B. Light water

C. Heavy water

D. Beryllium

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In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

A. Zirconia

B. Alumina

C. Bakelite

D. Tungsten carbide

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Which of the following alloying elements is present in maximum percentage in high speed steel?

A. Molybdenum

B. Chromium

C. Tungsten

D. Vanadium

Discuss this answer

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

A. Compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller

B. Maintaining vacuum on tube side is more difficult than that on the shell side

C. Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam

D. Condenser can act as a storage unit for condensed steam

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For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.

A. 250

B. 500

C. 1000

D. 3000

Discuss this answer

A form of stress corrosion failure termed as 'season cracking' is generally observed in

A. Thermosetting polymers

B. High carbon steels

C. Brasses

D. Borosilicate glasses

Discuss this answer

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

A. 0.01

B. 0.1

C. 0.25

D. 0.5

Discuss this answer

Dislocations are __________ defects.

A. Point

B. Line

C. Volume

D. None of these

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Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A. 1.5

B. 3

C. 5

D. 7

Discuss this answer

'Ice point' is designated on Fahrenheit temperature scale by

A. 0°

B. 32°

C. 62°

D. 212°

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The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

A. 60 - 100

B. 400 - 700

C. 1200 -1500

D. 2000 - 2300

Discuss this answer

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

A. Surface finish

B. Fatigue limit

C. Creep limit

D. Surface cleanliness

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In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

A. Mechanical

B. Overall

C. Volumetric

D. Impeller

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Pick out the wrong statement.

A. A ferromagnetic material becomes paramagnetic above the 'Curie temperature'

B. Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials

C. Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces

D. Tungsten steel and alnico are not hard magnetic materials

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Temper brittleness of a material can be fairly detected by the __________ test.

A. Fatigue

B. Notched bar impact

C. Tensile

D. Hardness

Discuss this answer

Pick out the wrong statement.

A. Seam welding, projection welding & spot welding are the classification of electrical resistance welding

B. Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)

C. In spot welding, two pieces to be joined are overlapped and placed between two electrodes

D. Mild steel sheet cannot be spot welded

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__________ of air does not increase with increase in temperature.

A. Density

B. Thermal diffusivity

C. Viscosity

D. Thermal conductivity

Discuss this answer

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the

A. Low impact strength

B. High flexibility

C. Better finish and surface appearance

D. High plastic deformation

Discuss this answer

Hardening of steel is not possible, unless it is heated __________ critical point.

A. Above the highest

B. Above the lowest

C. Between the first & second

D. Between the second & third

Discuss this answer

The following type of bonding is strongly directional in solids.

A. Vander Waal's

B. Ionic

C. Metallic

D. Covalent

Discuss this answer

With increase in temperature, the electrical conductivity of semiconductors

A. Increases

B. Decreases

C. Remain constant

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

Discuss this answer

Natural water contains approximately __________ percent of heavy water.

A. 0.015

B. 0.71

C. 1.2

D. 3.5

Discuss this answer

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)

Discuss this answer

Maximum consumption of limestone is in the __________ industry.

A. Iron and steel

B. Cement

C. Glass

D. Fertiliser

Discuss this answer

Photographic plates are coated with

A. Silver nitrate

B. Silver halide

C. Calcium silicate

D. Metallic silver

Discuss this answer

Silicon percentage in silicon steel used for electrical equipments is about

A. 1

B. 4.0

C. 8

D. 14

Discuss this answer

Plastics as a material of construction suffer from the drawback of low

A. Machinability

B. Density

C. Strength

D. Plastic deformation

Discuss this answer

Heat required to raise the temperature of a body by 1 °C is called its

A. Heat capacity

B. Specific heat capacity

C. Thermal conductivity

D. Water equivalent

Discuss this answer

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of

A. Paper

B. Cloth

C. Lead

D. Aluminium

Discuss this answer

More than 95% of __________ is present in corundum.

A. SiO₂

B. Al₂O₃

C. CaSiO₂

D. MgO

Discuss this answer

Increasing sulphur content in pig iron tends to make it

A. Soft

B. Hard

C. Tough

D. Ductile & malleable

Discuss this answer

Accepted Answer

A. Graphite

The most commonly used moderator in nuclear power plants is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

Which of the following alloying elements is present in maximum percentage in high speed steel?

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.

A form of stress corrosion failure termed as 'season cracking' is generally observed in

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

Dislocations are __________ defects.

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

'Ice point' is designated on Fahrenheit temperature scale by

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

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

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).

Pick out the wrong statement.

Temper brittleness of a material can be fairly detected by the __________ test.

Pick out the wrong statement.

__________ of air does not increase with increase in temperature.

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the

Hardening of steel is not possible, unless it is heated __________ critical point.

The following type of bonding is strongly directional in solids.

With increase in temperature, the electrical conductivity of semiconductors

Natural water contains approximately __________ percent of heavy water.

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

Maximum consumption of limestone is in the __________ industry.

Photographic plates are coated with

Silicon percentage in silicon steel used for electrical equipments is about

Plastics as a material of construction suffer from the drawback of low

Heat required to raise the temperature of a body by 1 °C is called its

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of

More than 95% of __________ is present in corundum.

Increasing sulphur content in pig iron tends to make it

Also checkout

The most commonly used moderator in nuclear power plants is

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?

Which of the following alloying elements is present in maximum percentage in high speed steel?

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.

A form of stress corrosion failure termed as 'season cracking' is generally observed in

A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness __________ metre.

Dislocations are __________ defects.

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

'Ice point' is designated on Fahrenheit temperature scale by

The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

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

In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).

Pick out the wrong statement.

Temper brittleness of a material can be fairly detected by the __________ test.

Pick out the wrong statement.

__________ of air does not increase with increase in temperature.

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterised by the

Hardening of steel is not possible, unless it is heated __________ critical point.

The following type of bonding is strongly directional in solids.

With increase in temperature, the electrical conductivity of semiconductors

Natural water contains approximately __________ percent of heavy water.

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

Maximum consumption of limestone is in the __________ industry.

Photographic plates are coated with

Silicon percentage in silicon steel used for electrical equipments is about

Plastics as a material of construction suffer from the drawback of low

Heat required to raise the temperature of a body by 1 °C is called its

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of

More than 95% of __________ is present in corundum.

Increasing sulphur content in pig iron tends to make it

Also checkout

In case of a, centrifugal pump, the ratio h₁/h₂ is termed as the __________ efficiency (where, h₁ = actual measured head & h₂ = head imparted to the fluid by impeller).