is the hardest metal in common use.

is the lightest metal in common use.

can not be scratched by finger nails.

The metals occuring at the lower most position in the electromotive series

resist corrosion very strongly.

Presence of high amount of silicon in cast iron

increases the contraction of the metal.

suppresses the decomposition of Fe3 C.

increases the formation of graphite.

increases the contraction of the metal.

Polythene (low or high density) containers are not corroded by

nitric acid (95%) at room temperature.

sulphuric acid (10%) at room temperature.

nitric acid (95%) at room temperature.

The addition of antimony in tin-based alloys improves its

rupture strength and hot hardness.

impact strength and bonding strength.

Diamagnetic materials are magnetised

in a direction opposite to that of the applied field.

characterised by an orthorhombic crystal structure.

Steel tower used for the storage of oleum

is lined with acid-proof bricks.

Sheardising process is used for

heat treatment of high speed steel.

Work hardening of a material

decreases its tensile strength.

1037 + Mcqs in Materials And Construction in Chemical Engineering Page 20 McqOptions

951.	Material of construction of pipe generally used for conveying water in India is
A.	stainless steel
B.	cast iron
C.	wrought iron
D.	lead lined steel
Answer» C. wrought iron

Discussion

952.	Lead
A.	is the hardest metal in common use.
B.	is the lightest metal in common use.
C.	can not be scratched by finger nails.
D.	can not be work hardened.
Answer» E.

Discussion

953.	Phenol is not shipped in
A.	nickel lined steel tank cars.
B.	galvanised or tin lined drums.
C.	boxed glass carboys.
D.	cast iron containers.
Answer» E.

Discussion

954.	The metals occuring at the lower most position in the electromotive series
A.	do not resist corrosion.
B.	resist corrosion very strongly.
C.	are very brittle.
D.	are heat insulators.
Answer» C. are very brittle.

Discussion

955.	To improve the machinability of steel by its softening, it is subjected to
A.	cold working
B.	annealing
C.	shot blasting
D.	heating
Answer» C. shot blasting

Discussion

956.	A suitable material of construction to use with fuming sulphuric acid is
A.	carbon steel
B.	stainless steel type 304
C.	nickel
D.	monel
Answer» E.

Discussion

957.	Presence of high amount of silicon in cast iron
A.	suppresses the decomposition of Fe3 C.
B.	increases the formation of graphite.
C.	increases the contraction of the metal.
D.	reduces its fluidity.
Answer» C. increases the contraction of the metal.

Discussion

958.	__________ possesses viscoelastic properties.
A.	Cork
B.	Glass
C.	Graphite
D.	Rubber
Answer» E.

Discussion

959.	Nickel is a constituent of
A.	bronze
B.	solder
C.	duralumin
D.	monel metal
Answer» E.

Discussion

960.	White cast iron as compared to grey cast iron is
A.	more durable
B.	very brittle
C.	very hard
D.	all (a), (b) & (c)
Answer» E.

Discussion

961.	Carbon tetrachloride can be stored in a storage vessel made of
A.	high silicon iron (14% Si)
B.	tin
C.	stainless steel
D.	all (a), (b) and (c)
Answer» E.

Discussion

962.	Which one contains the least percentage of carbon ?
A.	Wrought iron
B.	High speed steel
C.	Cast iron
D.	Pig iron
Answer» B. High speed steel

Discussion

963.	Which of the following stainless steels is non-magnetic ?
A.	Ferritic
B.	Martensitic
C.	Austenitic
D.	None of these
Answer» D. None of these

Discussion

964.	Stainless steel contains
A.	chromium and nickel
B.	copper
C.	aluminium
D.	vanadium
Answer» B. copper

Discussion

965.	Amount of energy that a material can absorb before its fracture is a measure of its
A.	toughness
B.	resilience
C.	malleability
D.	ductility
Answer» B. resilience

Discussion

966.	Valves in pipe size of 2" and under are normally made of
A.	wrought iron
B.	brass
C.	bronze
D.	monel
Answer» C. bronze

Discussion

967.	Which of the following alloying elements is present in maximum percentage in high speed steel.
A.	Molybdenum
B.	Chromium
C.	Tungsten
D.	Vanadium
Answer» D. Vanadium

Discussion

968.	Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by
A.	dilute HC1
B.	acetic acid
C.	concentrated H2SO4
D.	none of these
Answer» C. concentrated H2SO4

Discussion

969.	Carbon is present in steel wholly in the
A.	combined form.
B.	free state as graphite.
C.	both (a) and (b).
D.	neither (a) nor (b).
Answer» B. free state as graphite.

Discussion

970.	Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of
A.	aluminium
B.	stainles steel
C.	high silicon (14%) iron
D.	copper
Answer» C. high silicon (14%) iron

Discussion

971.	Polythene (low or high density) containers are not corroded by
A.	sulphuric acid (10%) at room temperature.
B.	nitric acid (95%) at room temperature.
C.	sulphur trioxide at 60¬∞C.
D.	any of these.
Answer» B. nitric acid (95%) at room temperature.

Discussion

972.	Acetylene gas holder is made of
A.	copper
B.	cast iron
C.	steel
D.	monel metal
Answer» D. monel metal

Discussion

973.	Silicon percentage in iron castings to have maximum hardness should be about
A.	0.3
B.	0.5
C.	0.8
D.	2.5
Answer» D. 2.5

Discussion

974.	The addition of antimony in tin-based alloys improves its
A.	rupture strength and hot hardness.
B.	impact strength and bonding strength.
C.	deformation resistance.
D.	wear resistance.
Answer» D. wear resistance.

Discussion

975.	Mild steel is used for making
A.	fish plates
B.	die block
C.	channels
D.	drop forging
Answer» D. drop forging

Discussion

976.	Hydrochloric acid is stored in a __________ steel vessel.
A.	lead lined
B.	rubber lined
C.	glass lined
D.	stainless
Answer» C. glass lined

Discussion

977.	Acetaldehyde is shipped in __________ drums.
A.	cast iron
B.	steel
C.	aluminium
D.	either (b) & (c)
Answer» E.

Discussion

978.	High speed cutting tool steels contain about __________ percent of tungsten.
A.	43683
B.	18-20
C.	30-35
D.	50-55
Answer» C. 30-35

Discussion

979.	Diamagnetic materials are magnetised
A.	strongly.
B.	only slightly.
C.	with eddy currents only.
D.	in a direction opposite to that of the applied field.
Answer» E.

Discussion

980.	Silicon percentage in acid resistant cast iron is about
A.	4
B.	8
C.	14
D.	20
Answer» D. 20

Discussion

981.	Which of the following has the poorest wel-dability ?
A.	Low carbon steel
B.	Mild steel
C.	Wrought iron
D.	High-carbon steel
Answer» E.

Discussion

982.	Cementite is
A.	Fe3C chemically.
B.	a compound of carbon and iron.
C.	characterised by an orthorhombic crystal structure.
D.	all (a), (b) and (c).
Answer» E.

Discussion

983.	Which of the following is the softest material ?
A.	Quartz
B.	Calcite
C.	Corrundum
D.	Flourite
Answer» C. Corrundum

Discussion

984.	The fermentor used in the production of pencillin (by deep fermentation process) is made of
A.	glass
B.	glass lined steel
C.	high silicon cast iron
D.	procelain
Answer» C. high silicon cast iron

Discussion

985.	The melleability 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 miximum malleability ?
A.	Lead
B.	Copper
C.	Aluminium
D.	Wrought iron
Answer» B. Copper

Discussion

986.	Post weld heat treatment is done by
A.	normalising
B.	stress relieving
C.	tempering
D.	solution annealing
Answer» C. tempering

Discussion

987.	Steel tower used for the storage of oleum
A.	is lined with lead.
B.	need not be lined.
C.	is lined with rubber.
D.	is lined with acid-proof bricks.
Answer» C. is lined with rubber.

Discussion

988.	__________ is not a case hardening process.
A.	Carburising
B.	Nitriding
C.	Cyaniding
D.	Annealing
Answer» E.

Discussion

989.	Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
A.	ultimate
B.	yield point
C.	proof
D.	none of these
Answer» D. none of these

Discussion

990.	Cast irons are generally specified by their
A.	carbon content
B.	tensile strength
C.	hardness
D.	manufacturing proces
Answer» C. hardness

Discussion

991.	Which of the following has the highest density and the lowest melting point ?
A.	Stainless steel
B.	Titanium
C.	Lead
D.	Aluminium
Answer» D. Aluminium

Discussion

992.	Which of the following crystal structures characterises the austenitic stainless steel?
A.	Simple hexagonal
B.	Body centred cubic
C.	Face centred cubic
D.	None of these
Answer» D. None of these

Discussion

993.	Wrought iron is a suitable material of construction for handling __________ solutions.
A.	dilute acidic
B.	concentrated acidic
C.	alkalis & alkaline
D.	none of these
Answer» D. none of these

Discussion

994.	Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its
A.	corrosion resistance
B.	tensile strength
C.	machinability
D.	compressive strength
Answer» D. compressive strength

Discussion

995.	The fermentor used for the production of ethyl alcohol from molasses is made of
A.	wood
B.	concrete
C.	copper bearing steel
D.	procelain
Answer» D. procelain

Discussion

996.	Carbon is present in the combined form (carbide) in case of
A.	pig iron
B.	steel
C.	ferroalloys
D.	all (a), (b) & (c)
Answer» E.

Discussion

997.	Sheardising process is used for
A.	surface coating.
B.	heat treatment of high speed steel.
C.	cold working on metals.
D.	none of these.
Answer» B. heat treatment of high speed steel.

Discussion

998.	Work hardening of a material
A.	decreases its tensile strength.
B.	decreases its ductility.
C.	increases its ductility.
D.	does not affect its ductility.
Answer» C. increases its ductility.

Discussion

999.	Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
A.	karbate
B.	lead or glass
C.	fireclay bricks
D.	PVC
Answer» C. fireclay bricks

Discussion

1000.	Percentage elongation of a material is a measure of its
A.	ductility
B.	brittleness
C.	toughness
D.	malleability
Answer» B. brittleness

Discussion

Explore topic-wise MCQs in Chemical Engineering.

Material of construction of pipe generally used for conveying water in India is

Lead

Phenol is not shipped in

The metals occuring at the lower most position in the electromotive series

To improve the machinability of steel by its softening, it is subjected to

A suitable material of construction to use with fuming sulphuric acid is

Presence of high amount of silicon in cast iron

__________ possesses viscoelastic properties.

Nickel is a constituent of

White cast iron as compared to grey cast iron is

Carbon tetrachloride can be stored in a storage vessel made of

Which one contains the least percentage of carbon ?

Which of the following stainless steels is non-magnetic ?

Stainless steel contains

Amount of energy that a material can absorb before its fracture is a measure of its

Valves in pipe size of 2" and under are normally made of

Which of the following alloying elements is present in maximum percentage in high speed steel.

Lead pipes are not safe for carraying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by

Carbon is present in steel wholly in the

Neutraliser tank used for reacting nitric acid with ammonia for the production of ammonium nitrate is made of

Polythene (low or high density) containers are not corroded by

Acetylene gas holder is made of

Silicon percentage in iron castings to have maximum hardness should be about

The addition of antimony in tin-based alloys improves its

Mild steel is used for making

Hydrochloric acid is stored in a __________ steel vessel.

Acetaldehyde is shipped in __________ drums.

High speed cutting tool steels contain about __________ percent of tungsten.

Diamagnetic materials are magnetised

Silicon percentage in acid resistant cast iron is about

Which of the following has the poorest wel-dability ?

Cementite is

Which of the following is the softest material ?

The fermentor used in the production of pencillin (by deep fermentation process) is made of

The melleability 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 miximum malleability ?

Post weld heat treatment is done by

Steel tower used for the storage of oleum

__________ is not a case hardening process.

Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.

Cast irons are generally specified by their

Which of the following has the highest density and the lowest melting point ?

Which of the following crystal structures characterises the austenitic stainless steel?

Wrought iron is a suitable material of construction for handling __________ solutions.

Addition of lead, sulphur and phosphorus to low carbon steel helps in improving its

The fermentor used for the production of ethyl alcohol from molasses is made of

Carbon is present in the combined form (carbide) in case of

Sheardising process is used for

Work hardening of a material

Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with

Percentage elongation of a material is a measure of its