Material and Construction Objective Questions & Answers - ObjectiveBooks

Material and Construction Objective Questions & Answers

Practice Test: Question Set - 34

1. Nitriding of steel is done (in electric furnace) at __________ °C.
    (A) 510
    (B) 1720
    (C) 2210
    (D) 910

2. An ideal material of construction for the storage of 50% caustic soda solution would be
    (A) Karbate
    (B) High silicon cast iron
    (C) Monel
    (D) None of these

3. Brass is an alloy of
    (A) Nickel and tin
    (B) Copper and zinc
    (C) Tin and lead
    (D) Copper, nickel and zinc

4. The heat treatment process applied to cold formed steel parts is
    (A) Normalizing
    (B) Tempering
    (C) Artificial ageing
    (D) Solution annealing

5. A hardened steel essentially contains
    (A) Sorbite
    (B) Troostite
    (C) Martensite
    (D) None of these

6. The fermenter used in the production of penicillin (by deep fermentation process) is made of
    (A) Glass
    (B) Glass lined steel
    (C) High silicon cast iron
    (D) Porcelain

7. Silicone rubber is not resistant to the corrosive action of
    (A) Sulphuric acid (10%)
    (B) Sulphuric acid (95%)
    (C) Ether
    (D) Both (b) and (c)

8. The largest consumption of zinc for alloys is in the making of
    (A) Bearing metal
    (B) Brasses
    (C) Brazing solder
    (D) Die casting alloys

9. Cast iron has
    (A) Very high tensile strength
    (B) High ductility
    (C) High malleability
    (D) Elastic limit close to ultimate breaking strength

10. High resistance electrical heating elements/wire are not made of
    (A) Maraging steel
    (B) Nimonic alloys
    (C) Kanthal wire
    (D) Nichrome

11. Which of the following is not a copper based alloy with nickel?
    (A) German silver
    (B) Monel metal
    (C) Inconel
    (D) Constantan

12. Tin coating is not done by
    (A) Vaporizing
    (B) Hot dipping
    (C) Electro deposition
    (D) Spraying

13. Which of the following mechanical properties of a material is most structure insensitive?
    (A) Modulus of elasticity (young's modulus)
    (B) Toughness
    (C) Percentage reduction of area
    (D) Tensile strength

14. Nickel is a __________ material.
    (A) Ferromagnetic
    (B) Diamagnetic
    (C) Paramagnetic
    (D) None of these

15. Super conductors are those substances, which
    (A) Offer no resistance to current flow
    (B) Conduct electricity at low temperature
    (C) Offer high resistance to current flow
    (D) Conduct electricity at high temperature

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