Hardware Building Materials Books MCQ - Set 18 - ObjectiveBooks

Hardware Building Materials Books MCQ - Set 18

Practice Test: Question Set - 18

1. The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability?
    (A) Lead
    (B) Copper
    (C) Aluminium
    (D) Wrought iron

2. Which of the following is the most elastic material?
    (A) Plastic
    (B) Glass
    (C) Steel
    (D) Rubber

3. The phenomenon in which slow extension of material takes place with the time at constant load is called
    (A) Plasticity
    (B) Creep
    (C) Elasticity
    (D) Ductility

4. Glass lined vessels are not used for handling
    (A) Dilute H2SO4
    (B) Dilute HNO3
    (C) Dilute HCI
    (D) Hydrofluoric acid

5. Constituents of stellite are
    (A) Zinc, copper and nickel
    (B) Cobalt, chromium and tungsten
    (C) Zinc, aluminium and nickel
    (D) Nickel, cobalt and vanadium

6. A material no longer behaves elastically beyond
    (A) Plastic limit
    (B) Limiting load
    (C) Elastic limit
    (D) Breaking load

7. The material used in the filament of electric bulbs is
    (A) Nichrome
    (B) Tungsten
    (C) Constantan
    (D) German silver

8. Pick the odd man out of the following.
    (A) Calorising
    (B) Pack carburizing
    (C) Nitriding
    (D) Cyaniding

9. Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with
    (A) Karbate
    (B) Lead or glass
    (C) Fireclay bricks
    (D) PVC

10. Dies for wire drawing are generally made of
    (A) Mild steel
    (B) Stainless steel
    (C) Carbides
    (D) High carbon steel

11. Ability of a material to __________ is indicated by its damping capacity.
    (A) Withstand compression
    (B) Absorb vibration
    (C) Absorb shock
    (D) None of these

12. Thermosetting resins are those polymers, which
    (A) Do not increase in plasticity with rise in temperature
    (B) Allow slip to occur between molecules
    (C) Do not take on a permanent set
    (D) None of these

13. Babbitt metal used for bearings is a _________base alloy.
    (A) Tin
    (B) Lead
    (C) Aluminium
    (D) Copper

14. Babbitt metal used for making bearings should have
    (A) High co-efficient of friction between journal and bearing
    (B) Ability to retain lubricant on its surface
    (C) Low co-efficient of friction between journal and bearing
    (D) Both (b) & (c)

15. Chromel (Nichrome) is an alloy of
    (A) Chromium and molybdenum
    (B) Nickel and chromium
    (C) Molybdenum and nickel
    (D) Chromium and aluminium

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