Lightweight Construction Materials Online Practice Test - Set 15 - ObjectiveBooks

Lightweight Construction Materials Online Practice Test - Set 15

Practice Test: Question Set - 15

1. For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is
    (A) Stainless steel
    (B) Cast iron
    (C) Aluminium
    (D) Nickel

2. The presence of impurities in iron
    (A) Increases its melting point
    (B) Does not affect its melting point
    (C) Decreases its melting point
    (D) Makes it malleable

3. Carbon content in plain carbon steel is __________ percent.
    (A) 0.1 to 0.15
    (B) 0.35 to 0.45
    (C) 0.65 to 0.80
    (D) 0.85 to 1.2

4. Hardest materials so far found is
    (A) Diamond
    (B) Graphite
    (C) Carborundum
    (D) Pumice stone

5. Common house hold glass (i.e., soda-lime glass) is a/an __________ material.
    (A) Fully crystalline
    (B) Partly crystalline
    (C) Amorphous
    (D) None of these

6. Ball bearings are generally made of
    (A) Plain carbon steel
    (B) Chrome carbon steel
    (C) Stainless steel
    (D) Malleable cast iron

7. A magnetic material becomes __________ above the Curie temperature.
    (A) Ferromagnetic
    (B) Diamagnetic
    (C) Paramagnetic
    (D) None of these

8. Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property?
    (A) Silicon
    (B) Phosphorus
    (C) Sulphur
    (D) None of these

9. In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of
    (A) Concrete
    (B) Wood
    (C) Steel
    (D) Porcelain

10. Fatigue failure of a material may occur, when it is subjected to __________ stress.
    (A) Fluctuating
    (B) Tensile
    (C) Compressive
    (D) Torsion

11. The ability of a material to offer resistance to scratching or indentation is a measure of its
    (A) Brittleness
    (B) Toughness
    (C) Hardness
    (D) Resilience

12. Rotary driers are generally made of
    (A) Cast iron
    (B) Mild steel
    (C) High silicon iron (14% Si)
    (D) Tin lined with refractory bricks

13. Metalloid is
    (A) Highly electronegative in nature
    (B) An element which exhibits the properties of both metal & non-metal
    (C) An alloy
    (D) All (a), (b) and (c)

14. Acetaldehyde is shipped in __________ drums.
    (A) Cast iron
    (B) Steel
    (C) Aluminium
    (D) Either (b) & (c)

15. Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
    (A) Molybdenum stainless steel
    (B) 18/8 stainless steel
    (C) Mild steel
    (D) High silicon iron (14% Si)

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