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

A. ΔQ = 0, ΔS=0

B. ΔQ = 0, ΔS = +ve

C. ΔQ = 0, ΔS = -ve

D. ΔQ = +ve, ΔS= +ve

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The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

A. Flow output

B. Head developed

C. Overall efficiency

D. Weight

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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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Use of water as a manometric liquid suffers from the disadvantage of its

A. Low vapour pressure

B. Corrosive nature

C. High vapour pressure

D. High boiling point

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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

Discuss this answer

__________ flux is used for the extraction of metal from its self fluxing ores.

A. No

B. Acid

C. Basic

D. Neutral

Discuss this answer

Chlorine acts as a bleaching agent only in the presence of

A. Dry air

B. Pure oxygen

C. Moisture

D. Sunlight

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Uniform ramming of sand in green sand moulding process leads to

A. Reduced chance of gas porosity

B. Greater dimensional stability of the casting

C. Uniform flow of molten metal into the mould cavity

D. Less sand expansion type of casting defect

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Pick out the wrong statement

A. Processing of thermosetting plastics is ideally done by injection moulding

B. Processing of thermoplastics is ideally done by compression moulding

C. Mass production of seamless pipes are done by electrical resistance welding (ERW)

D. Stretch forming is a process of cold drawing

Discuss this answer

Which of the, following is not associated with the functioning of a petrol engine?

A. Compression ignition system

B. Spark plug

C. Carburettor

D. Otto cycle

Discuss this answer

Tip of the match stick contains a mixture of

A. K + S

B. K + S + K₂Cr₂O₇

C. S + K₂Cr₂O₇ + White P

D. None of these

Discuss this answer

Air standard Otto cycle is more efficient than the diesel cycle for the same

A. Heat addition & compression ratio

B. Heat addition & pressure

C. Compression ratio & pressure

D. Cylinder dimension & rpm

Discuss this answer

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

A. T₁/(T₁-T₂)

B. T₂/(T₁-T₂)

C. T₁/T₂

D. T₂/T₁

Discuss this answer

The following thermocouple may be used for measuring temperature upto 1873°K.

A. Chromel-alumel

B. Copper-constantan

C. Platinum-platinum rhodium

D. Iron-constantan

Discuss this answer

Out of the following, which will fracture most readity, when hit with a hard hammer?

A. Brass

B. Bronze

C. German silver

D. Cast iron

Discuss this answer

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

A. 90% tungsten carbide and 10% cobalt

B. 70% aluminium oxide & 30% silica

C. 30% nickel, 15% chromium & 55% tungsten

D. 65% tungsten & 35% zirconium

Discuss this answer

The product of a commercial direct reduction process is

A. Liquid iron

B. Solid iron

C. Sponge iron

D. Iron saturated with carbon

Discuss this answer

Heating of ferromagnetic materials to a temperature above Curie temperature makes it

A. Insulator for heat & electricity transmission

B. Ferritic

C. Behave like paramagnetic materials

D. Superconductor

Discuss this answer

For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

A. 30,000 J

B. 60,000 J

C. 90,000 J

D. 2,40,000 J

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The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

A. Casting

B. Pattern

C. Draft

D. Distortion

Discuss this answer

Tin based white metals are used, where bearings are subjected to

A. High pressure & load

B. Low pressure & load

C. High temperature

D. Large surface wear

Discuss this answer

Holes for riveting purposes should be preferably made by

A. Cutting torch

B. Drilling

C. Punching

D. None of these

Discuss this answer

Glass reacts with

A. H₂SO₃

B. HF

C. HNO₃

D. K₂Cr₂O₇

Discuss this answer

Cold heading or upsetting is categorised as the __________ process.

A. Extrusion

B. Bending

C. Rolling

D. Forging

Discuss this answer

Thermit welding uses the following energy source.

A. Electrical energy

B. Chemical energy

C. Energy of high velocity electrons

D. Heat generated by friction

Discuss this answer

Fibre reinforced plastic (FRP) are

A. Made of glass fibre and thermoplastic resins

B. Anisotropic

C. Made of thermosetting resin and glass fibre

D. Both 'b' & 'c'

Discuss this answer

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

A. 370

B. 340

C. 320

D. 300

Discuss this answer

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

A. 5

B. 1.25

C. 2.5

D. 3.75

Discuss this answer

Runge-Kutta method is used to solve a/an

A. Ordinary differential equation of nth order

B. Simultaneous non-linear equation

C. Linear differential equation

D. None of these

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.

A. Lack of free

B. Excess of

C. Decrease in

D. None of these

Discuss this answer

During sensible heating of humid air

A. Relative humidity increases

B. Dew point remains constant

C. Dry bulb & wet bulb temperature increases

D. Both 'b' & 'c'

Discuss this answer

Accepted Answer

B. ΔQ = 0, ΔS = +ve

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

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

Use of water as a manometric liquid suffers from the disadvantage of its

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

__________ flux is used for the extraction of metal from its self fluxing ores.

Chlorine acts as a bleaching agent only in the presence of

Uniform ramming of sand in green sand moulding process leads to

Pick out the wrong statement

Which of the, following is not associated with the functioning of a petrol engine?

Tip of the match stick contains a mixture of

Air standard Otto cycle is more efficient than the diesel cycle for the same

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

The following thermocouple may be used for measuring temperature upto 1873°K.

Out of the following, which will fracture most readity, when hit with a hard hammer?

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

The product of a commercial direct reduction process is

Heating of ferromagnetic materials to a temperature above Curie temperature makes it

For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Tin based white metals are used, where bearings are subjected to

Holes for riveting purposes should be preferably made by

Glass reacts with

Cold heading or upsetting is categorised as the __________ process.

Thermit welding uses the following energy source.

Fibre reinforced plastic (FRP) are

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

Runge-Kutta method is used to solve a/an

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.

During sensible heating of humid air

Also checkout

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

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

The __________ of a double acting reciprocating pump as compared to the single acting pump will be almost double.

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

Use of water as a manometric liquid suffers from the disadvantage of its

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

__________ flux is used for the extraction of metal from its self fluxing ores.

Chlorine acts as a bleaching agent only in the presence of

Uniform ramming of sand in green sand moulding process leads to

Pick out the wrong statement

Which of the, following is not associated with the functioning of a petrol engine?

Tip of the match stick contains a mixture of

Air standard Otto cycle is more efficient than the diesel cycle for the same

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 - T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by

The following thermocouple may be used for measuring temperature upto 1873°K.

Out of the following, which will fracture most readity, when hit with a hard hammer?

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of

The product of a commercial direct reduction process is

Heating of ferromagnetic materials to a temperature above Curie temperature makes it

For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = - 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

Tin based white metals are used, where bearings are subjected to

Holes for riveting purposes should be preferably made by

Glass reacts with

Cold heading or upsetting is categorised as the __________ process.

Thermit welding uses the following energy source.

Fibre reinforced plastic (FRP) are

A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be

Runge-Kutta method is used to solve a/an

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.

During sensible heating of humid air

Also checkout

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by (T₁ - T₂)/T₁. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

For the irreversible reaction, C_a+ 2C = C_a C₂ , Δ H°298 = - 60000 J . mole_-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be