MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Chemical Engineering
Materials And Construction
Quiz 9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Q.1
Anodic material used for the cathodic protection of underground buried steel pipeline is
Nickel or copper
Zinc or magnesium
Bronze
Brass
Q.2
Chromel (Nichrome) is an alloy of
Chromium and molybdenum
Nickel and chromium
Molybdenum and nickel
Chromium and aluminium
Q.3
The specific gravity of coal depends mainly on its __________ content.
Carbon
Volatile matter
Ash
Moisture
Q.4
In a plate type heat exchanger, heat transfer plates are never made of
Stainless steel
Cast iron
Titanium
Hastealloy C
Q.5
Cast iron vessels are not suitable for the storage of
Freon
H₂SO₄ (95%) at room temperature
H₂SO₄ (fuming)
Wet SO₂
Q.6
Centrifugal pump made of pyrex or glass can't be used to pump
Milk and fruit juices
Alkaline solutions
Dilute H₂SO₄ at room temperature
Brine
Q.7
Babbit metal used for making bearings should have
High-co-efficient of friction between journal and bearing
Ability to retain lubricant on its surface
Low co-efficient of friction between journal and bearing
Both B & C
Q.8
For platinum thermocouples, lead wires are made of
Copper & copper-nickel alloys
Copper & iron
Iron & nickel
Tin & nickel
Q.9
Presence of high phosphorous in cast iron increases its
Fluidity
Melting point
Shrinkage
Tensile strength
Q.10
Which of the following is not shipped in mild steel containers?
Acetone
Ammonia
Ethyl alcohol
Formic acid
Q.11
The metals occuring at the lower most position in the electromotive series
Do not resist corrosion
Resist corrosion very strongly
Are very brittle
Are heat insulators
Q.12
Atmospheric corrosion of metals result from their
Slow oxidation
Fast oxidation
Fast hydration
Slow dehydration
Q.13
Condenser tubes are not made of
Cartridge brass
Muntz brass
Wood metal
Aluminium brass alloy
Q.14
Platinum and silver are corroded by
Caustic soda solution
Phosphoric acid
Sulphuric acid (10%)
None of these
Q.15
For storing water and acid free benzol, use a __________ vessel.
Steel
Karbate
Stainless steel
None of these
Q.16
A steel alloy containing 36% nickel is called __________ , which has a zero co- efficient of expansion.
Austenitic stainless steel
Heat resisting steel
Invar
High speed steel
Q.17
Hydrocyanic acid is not shipped in
Cast iron vessels
Steel cylinders
Aluminium containers
Monel drums
Q.18
The carbonating tower used in Solvay process of soda ash manufacture is made of
Cast iron
Stainless steel
Karbate
Lead lined steel
Q.19
Tank furnace used for melting of glass is made of
Mild steel
Cast iron
Refractory blocks
Stainless steel
Q.20
Creep is not exhibited at low temperature by
Rubber
Acrylics
Lead
Plastics
Q.21
Silicon percentage in iron castings to have maximum hardness should be about
0.3
0.5
0.8
2.5
Q.22
Which of the following is the most prone to atmospheric corrosion?
Silver
Iron
Tin
Copper
Q.23
Which of the following is the hardest material?
Topaz
Quartz
Corrundum
Flourite
Q.24
Which of the following is the softest material?
Quartz
Calcite
Corrundum
Flourite
Q.25
Hammers and railway rails are normally made of
Mild steel
Dead mild steel
Medium carbon steel
High carbon steel
Q.26
Post weld heat treatment is done by
Normalising
Stress relieving
Tempering
Solution annealing
Q.27
The material of construction of bearings is
Cast iron
Babbit metal
Pig iron
Steel
Q.28
Metal at the top of the electromotive series is
Least active
Most stable
Most active
Most noble
Q.29
Heavy duty bearings are usually made of
White metal
Phosphorous bronze
Monel
Zinc
Q.30
Rotary driers are generally made of
Cast iron
Mild steel
High silicon iron (14% Si)
Tin lined with refractory bricks
Q.31
Wood is corroded by
Hydrochloric acid
SO₂ (dry or wet)
Chlorine (dry or wet)
All of the above
Q.32
Work hardening of a material
Decreases its tensile strength
Decreases its ductility
Increases its ductility
Does not affect its ductility
Q.33
Wrought iron is
High carbon iron
Highly resistance to acid corrosion
Malleable & ductile; and hence is used for chain links, hooks & couplings
An alloy of iron, chromium & carbon
Q.34
When iron is rusted, it is
Converted to a fine powder
Reduced
Oxidised
None of these
Q.35
White cast iron is not
Malleable
Whitish in color
Brittle
Strong and hard
Q.36
White metal is an alloy of
Lead, tin and cadmium
Copper, tin and zinc
Copper and lead
None of these
Q.37
Urea autoclave is made of
Cast iron
Refractory blocks
Stainless steel
Lead lined steel
Q.38
For spinning viscose rayon, the extrusion spinnerettes are made of
Platinum or gold alloys
High carbon steel
Aluminium
Nickel
Q.39
Generally __________ are subjected to galvanising (i.e., zinc coating).
Non-ferrous metals
Non-metals
Low carbon steels
Stainless steel
Q.40
__________ steel is widely used for the manufacture of motor car crankshafts.
Silicon
Nickel
Chrome
High speed
Q.41
Fatigue failure of a material may occur, when it is subjected to __________ stress.
Fluctuating
Tensile
Compressive
Torsion
Q.42
Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
Monel
Stainless steel
Graphite
Kel-F and teflon
Q.43
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?
Cast iron
Steel
Nickel
Karbate
Q.44
Which one has the maximum tensile strength out of the following?
Nodular cast iron
Pig iron
White cast iron
Grey cast iron
Q.45
Dielectric strength of a material is
Its energy stroage capacity
A magnetic property
Its capacity to resist the flow of current
Its capacity to withstand high voltage
Q.46
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of
Tungsten
Vanadium
Silicon
All of the above
Q.47
Which of the following is the hardest?
Cementite
Pearlite
Austenite
Ferrite
Q.48
A metallic alloy in general as compared to their pure metal components is
More corrosion resistant
Having higher melting point
Having lower hardness, reactivity and fusibility
Having lower electrical conductivity
Q.49
Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
Molybdenum stainless steel
18/8 stainless steel
Mild steel
High silicon iron (14% Si)
Q.50
Titanium metal
Exists in three allotropic forms
Can not be welded
Is used in oceanographic and space exploration applications
None of these
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page