Practice Test: Question Set - 33
1. With increase in carbide/graphite ratio in cast iron, its
- (A) Hardness
& brittleness increases
- (B) Ductility
decreases
- (C) Both (a) and (b)
- (D) Neither (a) nor (b)
2. Aluminium storage vessel can be used to store
- (A) Aqua regia
- (B) Ferrous sulphate
- (C) Hydrochloric acid
(10%)
- (D) None of these
3. Sulphuric acid pickling tanks are lined with
- (A) Nickel
- (B) Rubber
- (C) Aluminium
- (D) Glass
4. __________ possesses viscoelastic properties.
- (A) Cork
- (B) Glass
- (C) Graphite
- (D) Rubber
5. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of
- (A) Nickel
- (B) Copper
- (C) Stainless steel
- (D) Brass
6. The range of Mho's scale of hardness is from
- (A) 1 to 15
- (B) 1 to 8
- (C) 1 to10
- (D) 0 to 10
7. Nickel and copper are the basic constituents of
- (A) Hastelloy
- (B) Monel metal
- (C) German silver
- (D) Inconel
8. Which one contains the least percentage of carbon?
- (A) Wrought iron
- (B) High speed steel
- (C) Cast iron
- (D) Pig iron
9. Low carbon steels are those in which carbon percentage is around
- (A) 0.1 to 0.35
- (B) 0.4 to 0.7
- (C) 0.8 to 1.5
- (D) 1.5 to 2
10. Addition of 2% nickel in steel makes it suitable for making
- (A) Electronic valves
- (B) Boiler plates, rivets
etc.
- (C) Turbine blades
- (D) Connecting rod
11. Ceramic materials are
- (A) Organic in nature
- (B) Stronger in
compression than in tension
- (C) Always amorphous in
nature
- (D) Always bad heat
conductors
12. Plastics are
- (A) Used in very high
temperature applications
- (B) Non-biodegradable
- (C) Not suitable for
drainage pipe manufacture
- (D) All (a), (b) &
(c)
13. In hot wire anemometer used for gas flow measurement, the wire is normally made of
- (A) Copper
- (B) Platinum
- (C) Constantan
- (D) Chromium
14. SO3 is absorbed using H2SO4 in a
- (A) Cast iron packed
tower
- (B) Stainless steel plate
tower
- (C) Packed
steel tower lined with acid proof bricks
- (D) None of these
15. Stainless steel is not corroded by
- (A) Hydrochloric acid
(10%)
- (B) Nitric acid (10%)
- (C) Sulphuric acid (10%)
- (D) Saturated brine
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