The elastic strain in copper is due to the

Question

The elastic strain in copper is due to the

A. Motion of dislocations

B. Stretching of atomic bonds

C. Breakage of atomic bonds

D. None of the above

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The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

A. Equal to

B. Greater than

C. Less than

D. Either (A), (B) or (C); depends on the size of atom

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If a solid is compressed adiabatically in its elastic range, its __________ remains constant

A. Internal energy

B. Enthalpy

C. Entropy

D. Temperature

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Iron content in Indian iron ore is about __________ percent.

A. 80-85

B. 60-65

C. 40-45

D. 20-25

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Pick out the wrong statement.

A. Geothermal energy is a non-conventional source of energy

B. Mass is converted into energy in both nuclear fission & fusion reaction

C. Inhalation of mercury vapour is not harmful for human beings

D. Inhalation of arsenic causes cancer

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Stainless steel is welded using

A. Oxy-acetylene flame

B. Oxy-hydrogen flame

C. Arc welding

D. Inert gas arc welding

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Particle nature of cathode rays is proved due to the fact that they

A. Travel in a straight line

B. Get deflected by magnetic electric field

C. Produce fluorescence

D. Heat the exposed material

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Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is

A. Alumina

B. Platinum

C. Vanadium pentoxide

D. Iron oxide

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A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

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Which of the following is prone to cup and cone fracture?

A. Cast iron

B. Soft brass

C. Round specimen of ductile metal

D. Flat tensile specimen of ductile metal

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The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

A. Runner

B. Cylinder

C. Mold

D. None of these

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Increasing sulphur content in pig iron tends to make it

A. Soft

B. Hard

C. Tough

D. Ductile & malleable

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Addition of __________ to steel does not impart hardness.

A. Nickel

B. Copper

C. Chromium

D. Silicon

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Main constituent of bone ash is

A. Ammonium phosphate

B. Calcium phosphate

C. Animal charcoal

D. Ammonium sulphate

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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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Fatigue resistance of a material is measured by the

A. Elastic limit

B. Ultimate tensile strength

C. Young's modulus

D. Endurance limit

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On being hit with a hammer, __________ will readily fracture.

A. Brass

B. Mild steel

C. Cast iron

D. Lead

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For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

A.

B.

C.

D.

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The lightest non-inflammable gas is

A. H2

B. He

C. Ar

D. O2

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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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Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

A. SiO2

B. Al2O3

C. MnO2

D. P

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'Ice point' is designated on Fahrenheit temperature scale by

A. 0°

B. 32°

C. 62°

D. 212°

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

A. 1-5

B. 20-30

C. 100-150

D. 200-250

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With increase in temperature, the electrical conductivity of a __________ decreases.

A. Semi-conductor

B. Metal or alloy

C. Dielectric

D. None of these

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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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Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

A. Hexagonal close, packed (hcp)

B. Face centred cubic (fcc)

C. Body centred cubic (bcc)

D. Simple cubic

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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?

A. Temperature - entropy

B. Temperature - pressure

C. Enthalpy - entropy

D. Enthalpy-pressure

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Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is

A. Nickel

B. Cobalt

C. Vanadium

D. Platinum

Discuss this answer

Dry saturated steam can be converted into superheated steam by

A. Increasing its cross-sectional area of flow

B. Passing it through a pressure reducing valve

C. Forcing it downwards through a vertical tube

D. None of these

Discuss this answer

A material being tested for endurance strength is subjected to the __________ load.

A. Impact

B. Completely reversed

C. Dynamic

D. Static & dynamic

Discuss this answer

Which one of the following is incombustible?

A. H2

B. CCl4

C. C2H2

D. S

Discuss this answer

Accepted Answer

A. Motion of dislocations

The elastic strain in copper is due to the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

If a solid is compressed adiabatically in its elastic range, its __________ remains constant

Iron content in Indian iron ore is about __________ percent.

Pick out the wrong statement.

Stainless steel is welded using

Particle nature of cathode rays is proved due to the fact that they

Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is

A material being tested for endurance strength is subjected to the __________ load.

Which of the following is prone to cup and cone fracture?

The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

Increasing sulphur content in pig iron tends to make it

Addition of __________ to steel does not impart hardness.

Main constituent of bone ash is

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

Fatigue resistance of a material is measured by the

On being hit with a hammer, __________ will readily fracture.

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by

The lightest non-inflammable gas is

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

Limestone addition in the blast furnace is done to flux __________ present in the raw materials.

'Ice point' is designated on Fahrenheit temperature scale by

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

With increase in temperature, the electrical conductivity of a __________ decreases.

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

Out of the following, the lowest packing of atoms exists in __________ crystal lattice structure.

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?

Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is

Dry saturated steam can be converted into superheated steam by

A material being tested for endurance strength is subjected to the __________ load.

Which one of the following is incombustible?

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