Alternative Building Materials Online MCQ Practice Test - Set 07 - ObjectiveBooks
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Alternative Building Materials Online MCQ Practice Test - Set 07

Practice Test: Question Set - 07


1. The increase in hardness of metal due to its cold working is termed as the __________ hardening.
    (A) Work
    (B) Age
    (C) Induction
    (D) Flame

2. Anodic material used for the cathodic protection of underground buried steel pipeline is
    (A) Nickel or copper
    (B) Zinc or magnesium
    (C) Bronze
    (D) Brass

3. Mild steel storage vessels are suitable for the storage of
    (A) Anhydrous ammonia
    (B) Fatty acids
    (C) Hydrochloric acid (95%)
    (D) Sulphuric acid (25%)

4. High speed steel should have high
    (A) Toughness
    (B) Wear resistance
    (C) Hardenability
    (D) Both (b) & (c)

5. Which of the following has no effect on the carbide forming tendency in steels?
    (A) Molybdenum
    (B) Phosphorus
    (C) Chromium
    (D) Vanadium

6. Aqueous nitric acid is stored in __________ vessel.
    (A) Plain carbon steel
    (B) Stainless steel
    (C) Cast iron
    (D) Thermosetting plastic material

7. High carbon steel contains more than __________ percent carbon.
    (A) 0.5
    (B) 2.2
    (C) 2.5
    (D) 2.8

8. 18/8 stainless steel means, that it contains
    (A) 18% chromium and 8% nickel
    (B) 18% chromium and 8% molybdenum
    (C) 18% nickel and 8% chromium
    (D) 18% molybdenum and 8% chromium

9. Manganese in steel affects its
    (A) Ductility
    (B) Tensile strength
    (C) Hardness
    (D) None of these

10. Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with
    (A) Acidic refractory
    (B) Rubber
    (C) Karbate
    (D) Lead or acid proof bricks

11. The electrical conductivity of a __________ decreases with rise in temperature.
    (A) Metal/alloy
    (B) Semi-conductor
    (C) Dielectric
    (D) None of these

12. Silicon percentage in iron castings to have maximum hardness should be about
    (A) 0.3
    (B) 0.5
    (C) 0.8
    (D) 2.5

13. Tin in its pure form is used for making
    (A) Cans for food packing
    (B) Collapsible tubes for toilet preparations
    (C) Foil for wrapping cheese
    (D) All (a), (b) and (c)

14. Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?
    (A) Silicon steel
    (B) Chromium steel
    (C) Molybdenum steel
    (D) None of these

15. Which of the following is produced by condensation polymerization?
    (A) Bakelite
    (B) Polythene
    (C) Poly vinyl chloride
    (D) Polystyrene

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