The activity co-efficient of the solute in a dilute solution

Question

The activity co-efficient of the solute in a dilute solution

A. Decreases with the increase of concentration of the solute

B. Increases with the increase of concentration of the solute

C. Remains constant

D. Is unity at infinite dilution

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An ideal material for making cooking vessels should have

A. High heat capacity

B. Low heat capacity

C. High thermal conductivity

D. Both (B) and (C)

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The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

A. Silicon

B. Carbon

C. Phosphorous

D. Chromium

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Vernier calipers cannot be used to measure the

A. I.D. & O.D. of the shaft

B. Thickness of parts

C. Depth of holes

D. Clearance between two mating surfaces

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Hot working of lead is carried out at

A. 75°C

B. 373°K

C. 150°C

D. Room temperature

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__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

A. Stellite

B. High speed steel

C. Cermet

D. Alnico

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

A. Temperature is low

B. Atmospheric pressure is low

C. Atmospheric pressure is high

D. None of these

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Which of the following is the most suitable abrasive for grinding high tensile strength materials?

A. Silicon carbide

B. Corundum

C. Aluminium oxide

D. Boron carbide

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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

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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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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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An abrupt and sudden fall in the reading of barometer is an indication of the

A. Storm

B. Rain

C. Clear weather

D. Cold wave

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With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

A. Impact strength

B. Percent elongation

C. Hardness

D. Both 'b' & 'c'

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A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

A. Aqueous tension

B. Saturated humidity

C. Vapor pressure

D. Absolute humidity

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Pick out the wrong statement.

A. A soft magnetic material should have high permeability and small area of hysteresis loop

B. Poisson's ratio of high melting point metals is more than unity

C. Solders generally melt at less than 185°C

D. Steel produced by B.O.F process is ideally suited for manufacturing flat product

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__________ fluid force is not considered in the Navier-Stokes equation.

A. Turbulent

B. Viscous

C. Gravity

D. Pressure

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If Reynolds number is greater than 1, then the

A. Viscous force is larger than the inertia force

B. Inertia force is larger than the viscous force

C. Inertia force is larger than the surface tension force

D. Inertia force is larger than the gravitational force

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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

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The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?

A. Lead

B. Copper

C. Aluminium

D. Wrought iron

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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 dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

A. Wet bulb temperature=dry bulb temperature

B. Wet bulb temperature=dew point temperature

C. Saturation temperature=dew point temperature

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

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Which of the following properties of a solid is not dependent on crystal imperfection?

A. Ductility

B. Semi-conductivity

C. Melting point

D. Yield stress

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Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about

A. 1

B. 10

C. 25

D. 50

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Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

A. Strain rate is increased

B. Grain size is increased

C. Prior cold deformation is increased

D. Not affected by any of the above parameters

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Principal alloying element in Elinvar (used for making hair springs for watches) is

A. Copper

B. Aluminium

C. Nickel

D. Zinc

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What happens, when SO₂ is passed through a solution of H2S in water?

A. Precipitation of sulphur takes place

B. H₂SO₃ is formed

C. Oleum is formed

D. None of these

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In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

A. 20

B. 60

C. 120

D. ∞

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Dowtherm is a

A. High temperature heating medium (a petroleum product)

B. Product of coal tar distillation

C. Very heat sensitive material

D. None of these

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Air-petrol ratio for maximum power generation in spark ignition engine is about

A. 6 : 1

B. 12 : 1

C. 18 : 1

D. 24 : 1

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At absolute zero temperature, for any reaction involving condensed phases

A. Δ G° = 0 , Δ H° = 0

B. Δ H° = 0 , Δ S° = 0

C. Δ S° = 0 , Δ E° = 0

D. Δ S° = 0 , Δ Cp° = 0

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Out of the following the refractive index is the highest for

A. Glass

B. Diamond

C. Brine

D. Kerosene

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Accepted Answer

C. Remains constant

The activity co-efficient of the solute in a dilute solution

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

An ideal material for making cooking vessels should have

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

Vernier calipers cannot be used to measure the

Hot working of lead is carried out at

__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

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

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

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

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

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

An abrupt and sudden fall in the reading of barometer is an indication of the

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

Pick out the wrong statement.

__________ fluid force is not considered in the Navier-Stokes equation.

If Reynolds number is greater than 1, then the

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

The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?

Cascade control is

The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

Which of the following properties of a solid is not dependent on crystal imperfection?

Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about

Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

Principal alloying element in Elinvar (used for making hair springs for watches) is

What happens, when SO₂ is passed through a solution of H2S in water?

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Dowtherm is a

Air-petrol ratio for maximum power generation in spark ignition engine is about

At absolute zero temperature, for any reaction involving condensed phases

Out of the following the refractive index is the highest for

Also checkout

The activity co-efficient of the solute in a dilute solution

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

An ideal material for making cooking vessels should have

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element.

Vernier calipers cannot be used to measure the

Hot working of lead is carried out at

__________ is the trade name assigned to a nonferrous cast alloy composed of cobalt, chromium & tungsten.

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

Which of the following is the most suitable abrasive for grinding high tensile strength materials?

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

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

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

An abrupt and sudden fall in the reading of barometer is an indication of the

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________ is not affected.

A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its

Pick out the wrong statement.

__________ fluid force is not considered in the Navier-Stokes equation.

If Reynolds number is greater than 1, then the

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

The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?

Cascade control is

The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the right. When relative humidity of moist air is 100%, then

Which of the following properties of a solid is not dependent on crystal imperfection?

Percentage of differential pressure lost in a Venturimeter with a tapering of 15° may be about

Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when

Principal alloying element in Elinvar (used for making hair springs for watches) is

What happens, when SO2 is passed through a solution of H2S in water?

In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is __________ °C.

Dowtherm is a

Air-petrol ratio for maximum power generation in spark ignition engine is about

At absolute zero temperature, for any reaction involving condensed phases

Out of the following the refractive index is the highest for

Also checkout

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

What happens, when SO₂ is passed through a solution of H2S in water?