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4

Mond gas is obtained by

A. Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast

B. Carbonisation of bituminous coal

C. Passing steam over incandescent coke

D. Passing air and a large amount of steam over waste coal at about 650°C

Correct Answer :

D. Passing air and a large amount of steam over waste coal at about 650°C


Related Questions

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4

The oxygen atom is ________ times heavier than the hydrogen atom.

A. 2

B. 8

C. 16

D. 32

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4

One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

A. 800 K

B. 1000 K

C. 1200 K

D. 1400 K

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4

The compression ratio for Diesel engines is

A. 3 to 6

B. 5 to 8

C. 15 to 20

D. 20 to 30

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4

The stress at which extension of the material takes place more quickly as compared to the increase in load is called

A. Elastic point of the material

B. Plastic point of the material

C. Breaking point of the material

D. Yielding point of the material

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4

Elasticity of Mild Steel specimen is defined by

A. Hookes law

B. Yield point

C. Plastic flow

D. Proof stress

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4

One kg of carbon monoxide requires __________ kg of oxygen to produce 11/7 kg of carbon dioxide gas.

A. 4/7

B. 11/4

C. 9/7

D. All of these

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4

The isothermal and adiabatic processes are regarded as

A. Reversible process

B. Irreversible process

C. Reversible or irreversible process

D. None of these

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4

A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

A. Same

B. Lower

C. Higher

D. None of these

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4

The property of a material by virtue of which a body returns to its original, shape after removal of the load is called

A. Plasticity

B. Elasticity

C. Ductility

D. Malleability

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4

The section modulus of a circular section about an axis through its C.G., is

A. πd²/4

B. πd²/16

C. πd3/16

D. πd3/32

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4

The stress developed in a material at breaking point in extension is called

A. Breaking stress

B. Fracture stress

C. Yield point stress

D. Ultimate tensile stress

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4

One Joule (J) is equal to

A. 1 N-m

B. 1 kN-m

C. 10 N-m/s

D. 10 kN-m/s

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4

Diamond riveted joint can be adopted in the case of following type of joint

A. Butt joint

B. Lap joint

C. Double riveted lap joints

D. All types of joints

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4

Otto cycle is also known as

A. Constant pressure cycle

B. Constant volume cycle

C. Constant temperature cycle

D. Constant temperature and pressure cycle

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4

Which of the following is correct?

A. Gauge pressure = Absolute pressure + Atmospheric pressure

B. Absolute pressure = Gauge pressure + Atmospheric pressure

C. Absolute pressure = Gauge pressure - Atmospheric pressure

D. Atmospheric pressure = Absolute pressure + Gauge pressure

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4

Kelvin-Planck's law deals with

A. Conservation of work

B. Conservation of heat

C. Conversion of heat into work

D. Conversion of work into heat

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4

The heating of a gas at constant pressure is governed by

A. Boyle's law

B. Charles' law

C. Gay-Lussac law

D. Avogadro's law

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4

A steel bar of 5 mm is heated from 25°C to 45°C and it is free to expand. The bar will induce

A. No stress

B. Shear stress

C. Tensile stress

D. Compressive stress

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4

The heating of gas at constant volume is governed by

A. Boyle's law

B. Charles' law

C. Gay-Lussac law

D. Avogadro's law

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4

Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

A. Zeroth law of thermodynamics

B. First law of thermodynamics

C. Second law of thermodynamics

D. Kinetic theory of gases

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4

The most probable velocity of the gas molecules is given by

A. √(KT/m)

B. √(2KT/m)

C. √(3KT/m)

D. √(5KT/m)

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4

When a bar is cooled to - 5°C, it will develop

A. No stress

B. Shear stress

C. Tensile stress

D. Compressive stress

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4

The capacity of a strained body for doing work on the removal of the straining force, is called

A. Strain energy

B. Resilience

C. Proof resilience

D. Impact energy

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4

Which of the following gas has the highest calorific value?

A. Coal gas

B. Producer gas

C. Mond gas

D. Blast furnace gas

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4

The gas turbine cycle with regenerator improves

A. Thermal efficiency

B. Work ratio

C. Avoids pollution

D. None of these

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4

Which of the following statement is incorrect?

A. The liquid fuels consist of hydrocarbons.

B. The liquid fuels have higher calorific value than solid fuels.

C. The solid fuels have higher calorific value than liquid fuels.

D. A good fuel should have low ignition point.

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4

The energy absorbed in a body, when it is strained within the elastic limits, is known as

A. Strain energy

B. Resilience

C. Proof resilience

D. Modulus of resilience

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4

The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.

A. Boyle's law

B. Charle's law

C. Gay-Lussac law

D. Joule's law

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4

The mass of flue gas per kg of fuel is the ratio of the

A. Mass of oxygen in 1 kg of flue gas to the mass of oxygen in 1 kg of fuel

B. Mass of oxygen in 1 kg of fuel to the mass of oxygen in 1 kg of flue gas

C. Mass of carbon in 1 kg of flue gas to the mass of carbon in 1 kg of fuel

D. Mass of carbon in 1 kg of fuel to the mass of carbon in 1 kg of flue gas

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4

A cantilever beam is one which is

A. Fixed at both ends

B. Fixed at one end and free at the other end

C. Supported at its ends

D. Supported on more than two supports