Aluminum Building Materials Multiple Choice Test - Set 12 - ObjectiveBooks

Aluminum Building Materials Multiple Choice Test - Set 12

Practice Test: Question Set - 12

1. Tin coating on metals is not done by
    (A) Spraying
    (B) Powder metallurgy
    (C) Hot dipping
    (D) Electro-deposition

2. Clock pendulums are usually made of __________ steel.
    (A) High speed
    (B) Stainless
    (C) Heat resisting
    (D) None of these

3. Metalloid is
    (A) An element, which exhibits the properties of both metal & non metal
    (B) Highly electronegative in nature
    (C) An alloy
    (D) All (a), (b) & (c)

4. Addition of nickel to copper improves its
    (A) Machinability
    (B) Ductility
    (C) Strength
    (D) Hardness

5. Gun metal is an alloy of
    (A) Nickel, tin and copper
    (B) Copper, tin and zinc
    (C) Copper, phosphorus and nickel
    (D) Manganese, phosphorus and nickel

6. Addition of __________ in steel is helpful in increasing the depth of hardness.
    (A) Chromium
    (B) Sulphur
    (C) Vanadium
    (D) Tungsten

7. Polymorphism is not exhibited by
    (A) Carbon
    (B) Iron
    (C) Phosphorous
    (D) None of these

8. Copper is dissolved from its ore by H2SO4 in a percolation tank made of
    (A) Wood
    (B) Stainless steel
    (C) Reinforced concrete lined with lead
    (D) High silicon iron (14% Si)

9. Carbon is present in the combined form (carbide) in case of
    (A) Pig iron
    (B) Steel
    (C) Ferroalloys
    (D) All (a), (b) & (c)

10. Gas holder of a gobar (cow-dung) gas plant is made of
    (A) Molybdenum stainless steel
    (B) Tin
    (C) Mild steel
    (D) Aluminium

11. The hardest material just prior to diamond in Mhos scale is
    (A) Topaz
    (B) Carborundum
    (C) Corundum
    (D) Calcite

12. For storing water and acid free benzol, use a __________ vessel.
    (A) Steel
    (B) Karbate
    (C) Stainless steel
    (D) None of these

13. Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of
    (A) Tungsten
    (B) Vanadium
    (C) Silicon
    (D) All (a), (b) & (c)

14. __________ is used for determining the tensile strength of steels.
    (A) Hydraulic press
    (B) Universal testing machine
    (C) Mechanical press
    (D) None of these

15. Which of the following is not an alloy of copper?
    (A) Muntz metal
    (B) Admiralty gun metal
    (C) German silver
    (D) Pewter metal

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