Practice Test: Question Set - 11
1. Thermosetting polymers are
- (A) Injection
moulded
- (B) Cast
molded
- (C) Extruded
- (D) None
of these
2. Which of the following metals in not used for coating of the base metal to guard it against corrosion?
- (A) Lead
- (B) Cadmium
- (C) Magnesium
- (D) Aluminium
3. Age hardening is concerned with
- (A) Copper
- (B) Brass
- (C) Duralumin
- (D) Silver
4. __________ moulding process cannot be used for thermoplastic plastics.
- (A) Compression
- (B) Extrusion
- (C) Injection
- (D) None of these
5. __________ is added in low carbon steel to raise its yield point.
- (A) Sulphur
- (B) Phosphorous
- (C) Silicon
- (D) Manganese
6. Cast iron compared to steel is better in
- (A) Ductility
- (B) Fluidity
& castability
- (C) Strength
- (D) Malleability
7. Presence of even 0.005% of __________ in copper makes it highly brittle, rendering it useless for wire-drawing.
- (A) Oxygen
- (B) Arsenic
- (C) Antimony
- (D) Bismuth
8. Which of the following is the hardest material?
- (A) Topaz
- (B) Quartz
- (C) Corundum
- (D) Fluorite
9. Cast iron is a __________ material.
- (A) Brittle
- (B) Ductile
- (C) Tough
- (D) Malleable
10. Which of the following is the most prone to atmospheric corrosion?
- (A) Silver
- (B) Iron
- (C) Tin
- (D) Copper
11. __________ does not contain tin as an alloying material.
- (A) Brass
- (B) Pewter
- (C) Solder
- (D) Babbitt metal
12. Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent.
- (A) 0.02
- (B) 0.2
- (C) 0.35
- (D) 0.5
13. Polymerization reactor used for the production of styrene butadiene rubber (SBR) is made of
- (A) Cast iron
- (B) Stainless steel or
glass lined vessel
- (C) Karbate
- (D) Wrought iron
14. __________ iron is produced, when molten pig iron is chilled suddenly.
- (A) White cast
- (B) Grey cast
- (C) Wrought
- (D) None of these
15. A chemical change takes place when iron
- (A) Rusts
- (B) Melts
- (C) Is heated
- (D) None of these
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