An oxidation process is accompanied with decrease in the

Question

An oxidation process is accompanied with decrease in the

A. Number of electrons

B. Oxidation number

C. Number of ions

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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A material subjected __________ must have high resilience.

A. Shock loading

B. Vibration

C. Fatigue

D. Tension

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The main charge in blast furnace is usually

A. Iron ore & coke

B. Iron ore, coke & air

C. Limestone, coke & iron ore

D. Limestone, sand & iron ore

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Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

A. 1/k

B. k

C. k²

D. 1/k²

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The following type of bonding is strongly directional in solids.

A. Vander Waal's

B. Ionic

C. Metallic

D. Covalent

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The units of the rate constant for a second order reaction are

A.

B.

C.

D.

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Propulsion of rocket follows from the

A. Newton's second law of motion

B. Newton's third law of motion

C. Law of projectiles

D. Archimedes principle

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In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

A.

B.

C.

D.

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Pick out the wrong statement.

A. Lead can creep under its own weight at room temperature

B. The electrical conductivity of gold is considerably reduced by alloying additions due to the decrease in electron movement

C. Recrystallisation temperature decreases with decrease in strain in a cold worked metal

D. With increase in temperature, the electrical conductivity of intrinsic semi-conductor will increase

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Leakage in a cooking gas cylinder is detected by

A. Radio-isotopes

B. Pouring soap solution on the surface and locating the gas bubbles

C. Halide torch

D. Pungent smell of mercaptans present in the gas

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__________ is the most suitable lubricant for drawing mild steel wires?

A. Kerosene

B. Water

C. Sodium stearate

D. Lime water

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Which of the following is an ore dressing operation?

A. Classification

B. Smelting

C. Roasting

D. None of these

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Production of a hollow product by inflation of a tube or parison is called the __________ process.

A. Blow moulding

B. Calendaring

C. Extrusion

D. Injection

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Pick out the wrong statement.

A. The X-rays cannot be deflected by electric field unlike cathode rays

B. The intensity of X-rays can be measured by ionisation current produced due to the ionisation of gas by X-rays

C. The quality of X-rays can be controlled by varying the anode-cathode voltage

D. Crystal structure of a material can be studied by an electron microscope

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The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

A. Resilience

B. Toughness

C. Ductility

D. Impact strength

Discuss this answer

Hydrogen can be

A. Used in I.C. engines as fuel

B. Liquefied & stored under cryogenic conditions

C. Produced by electrolysis of water

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

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The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

A. Refrigerant cooling

B. Evaporator

C. Condenser

D. Throttling

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A pycnometer is used for the measurement of

A. Flow rate of molten metal

B. Specific gravity of a liquid

C. Composition of alloys

D. Concentration of a solution

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To improve the machinability of steel, it is generally subjected to

A. Spheroidising

B. Tempering

C. Normalising

D. Annealing

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Which of the following has the highest value of refractive index?

A. Brine (sea water)

B. Diamond

C. Distilled water

D. Glass

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In __________ process, there is an increase in entropy with no degradation of energy.

A. Isothermal expansion

B. Isochoric heat addition

C. Polytropic expansion

D. Isobaric heat addition

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Which of the following materials has the poorest electrical conductivity?

A. Carbon

B. Aluminium

C. Silver

D. Stainless steel

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Which of the following is not a principal alloying element for the structural steel?

A. Molybdenum

B. Nickel

C. Manganese

D. Chromium

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For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

A. Linearly

B. Exponentially

C. Logarithmically

D. Inversely

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The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)

A. 2300 J

B. 4600 J

C. 230 J

D. 2.3 × 10⁶ J

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Atomic __________ of an element is a whole number.

A. Weight

B. Number

C. Volume

D. Radius

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The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

A. More

B. Equal

C. Less

D. Double

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Cassiterite is an ore of

A. Tin

B. Lead

C. Molybdenum

D. Chromium

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'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

A. Petrol

B. LPG

C. Light hydrocarbon gases (e.g. butane or propane)

D. None of these

Discuss this answer

Which of the following hardness tests does not measure the indentation hardness of metals and alloys?

A. Vickers hardness test

B. Shore scleroscope test

C. Brinell hardness test

D. Rockwell hardness test

Discuss this answer

Accepted Answer

A. Number of electrons

An oxidation process is accompanied with decrease in the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

A material subjected __________ must have high resilience.

The main charge in blast furnace is usually

Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

The following type of bonding is strongly directional in solids.

The units of the rate constant for a second order reaction are

Propulsion of rocket follows from the

In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

Pick out the wrong statement.

Leakage in a cooking gas cylinder is detected by

__________ is the most suitable lubricant for drawing mild steel wires?

Which of the following is an ore dressing operation?

Production of a hollow product by inflation of a tube or parison is called the __________ process.

Pick out the wrong statement.

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

Hydrogen can be

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

A pycnometer is used for the measurement of

To improve the machinability of steel, it is generally subjected to

Which of the following has the highest value of refractive index?

In __________ process, there is an increase in entropy with no degradation of energy.

Which of the following materials has the poorest electrical conductivity?

Which of the following is not a principal alloying element for the structural steel?

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)

Atomic __________ of an element is a whole number.

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

Cassiterite is an ore of

'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

Which of the following hardness tests does not measure the indentation hardness of metals and alloys?

Also checkout

An oxidation process is accompanied with decrease in the

Correct Answer :

Show all Chemical Engineering Basics MCQ

Related Questions

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

A material subjected __________ must have high resilience.

The main charge in blast furnace is usually

Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

The following type of bonding is strongly directional in solids.

The units of the rate constant for a second order reaction are

Propulsion of rocket follows from the

In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, = velocity gradient).

Pick out the wrong statement.

Leakage in a cooking gas cylinder is detected by

__________ is the most suitable lubricant for drawing mild steel wires?

Which of the following is an ore dressing operation?

Production of a hollow product by inflation of a tube or parison is called the __________ process.

Pick out the wrong statement.

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

Hydrogen can be

The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.

A pycnometer is used for the measurement of

To improve the machinability of steel, it is generally subjected to

Which of the following has the highest value of refractive index?

In __________ process, there is an increase in entropy with no degradation of energy.

Which of the following materials has the poorest electrical conductivity?

Which of the following is not a principal alloying element for the structural steel?

For a first order chemical reaction, the concentration of the reactant decreases __________ with time.

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : Cp of copper is 23 J K-1mole-1)

Atomic __________ of an element is a whole number.

The elastic strain energy of a unit length of an edge dislocation as compared to that of a screw dislocation is

Cassiterite is an ore of

'GASOHOL' widely used in Brazil as a motor fuel is a mixture of alcohol and

Which of the following hardness tests does not measure the indentation hardness of metals and alloys?

Also checkout

The heat released by cooling one mole of copper from 400 K to room temperature (300 K) is (assume : C_p of copper is 23 J K^-1mole^-1)