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
Next Tests: