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Current Affairs January 2024

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Maximum consumption of limestone is in the __________ industry.

A. Iron and steel

B. Cement

C. Glass

D. Fertiliser

Correct Answer :

D. Fertiliser


Related Questions

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Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.

A. 1

B. 10

C. 30

D. 50

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Plastics as a material of construction suffer from the drawback of low

A. Machinability

B. Density

C. Strength

D. Plastic deformation

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A compact estimate about the amount of materials handling between various work stations is obtained from the

A. Gantt chart

B. Bin chart

C. String diagram

D. Travel chart

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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

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In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

A. t = 15 - 0.0065 h

B. t = 15 + 0.0065 h

C. t = 0.0035 h - 15

D. t = 15 - 0.0035 h

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__________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.

A. Borosilicate

B. High silica

C. Supermax

D. Lead

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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

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The value of for air & most common gases can be safely assumed to be

A. 0.8

B. 1

C. 1.4

D. 1.8

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With increase in steam pressure, its specific volume decreases

A. Rapidly first and then slowly

B. Linearly

C. Slowly first and then rapidly

D. Exponentially

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Non-ferrous alloys used for making cutting tools need not have high

A. Abrasion resistance

B. Toughness

C. Red hardness

D. Cutting speed

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Electrometallurgy is not involved in the extraction of __________ from its ore.

A. Aluminium

B. Tin

C. Lead

D. Both (B) & (C)

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Broaching tools are usually made of

A. Cermets

B. High speed steel

C. Tungsten carbide

D. Stellite

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__________ is used for tying the steel columns to concrete foundation.

A. Grouting

B. Eyebolt

C. Anchor bolts

D. Refractory castables

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Pick out the correct combination about the role of various additives used in polymers.

A. Plasticiser: increases the polymer strength

B. Heat stabiliser: increases the maximum service temperature

C. Fillers: Does not affect the property of polymer but increases its weight

D. Lubricants: increases the flexibility of polymers

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'Ice point' is designated on Fahrenheit temperature scale by

A.

B. 32°

C. 62°

D. 212°

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Out of the following, the joint produced by __________ has the lowest strength.

A. Soldering

B. Welding

C. Brazing

D. Riveting

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Secondary hardening in steels arises out of the

A. Precipitation of fine alloy carbides at high temperatures

B. Refinement of ferrite grain size by working

C. Decomposition of retained austenite upon heat treatment

D. Precipitation of complex inter-metallic upon heat treatment

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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 highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?

A. Steel

B. Glass

C. Rubber

D. Brass

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The most suitable material of construction for a sewer to carry sewage under high pressure is

A. Asbestos cement

B. Steel

C. Cement concrete

D. Stoneware

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Liquor poisoning generally occurs due to the presence of __________ in it.

A. Ethyl alcohol

B. Impurities

C. Methyl alcohol

D. Carbonic acid

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The thickness of oxide film is y at time t. If are the temperature dependent constants, the parabolic law of oxidation is given by

A.

B.

C.

D.

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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

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Oxygen cylinders used for autogenous (cutting/welding) purposes are

A. Seamless & made of steel

B. Heat treated before use

C. Made by sand casting

D. Welded steel cylinders

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The bolt is subjected to __________ when the nut is tightened by putting the washer beneath it.

A. Tension

B. Shear

C. Compression

D. Bending & tension

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An alloy of Fe - 0.4 % C is

A. Cast iron

B. Hypo-eutectoid steel

C. Hyper-eutectoid steel

D. Eutectoid steel

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A jig is used while __________ a hole.

A. Boring

B. Counter boring

C. Drilling

D. Enlarging

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At the point of boundary layer separation in fluid flow, the

A. Shear stress is maximum

B. Velocity gradient is flat

C. Density variation is maximum

D. Shear stress is zero

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Which of the following is the largest quantum of pressure?

A. 1 kg/cm2

B. 1 bar

C. 1 atmosphere

D. 1 kilo Pascal

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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