Prefabricated Construction Materials Practice Questions - Set 11 - ObjectiveBooks

Prefabricated Construction Materials Practice Questions - Set 11

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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