Smart Materials in Construction MCQ Questions Answers - Set 14 - ObjectiveBooks

Smart Materials in Construction MCQ Questions Answers - Set 14

Practice Test: Question Set - 14

1. Monel metal is an alloy of
    (A) Molybdenum and nickel
    (B) Nickel and copper
    (C) Molybdenum and aluminium
    (D) Molybdenum and zinc

2. Trough of an apron conveyor is made of
    (A) Lead lined concrete vessel
    (B) Wood
    (C) Metal
    (D) Either (b) or (c)

3. Centrifugal pump made of pyrex or glass can't be used to pump
    (A) Milk and fruit juices
    (B) Alkaline solutions
    (C) Dilute H2SO4 at room temperature
    (D) Brine

4. The process of coating steel sheets by zinc to improve its corrosion resistance is called
    (A) Calorizing
    (B) Galvanizing
    (C) Zincification
    (D) Tempering

5. Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making
    (A) Nuts
    (B) Bolts
    (C) Chisels
    (D) Studs

6. Polythene (low or high density) containers are not corroded by
    (A) Sulphuric acid (10%) at room temperature
    (B) Nitric acid (95%) at room temperature
    (C) Sulphur trioxide at 60°C
    (D) Any of these

7. Thermoplastic resins are those polymers, which
    (A) Has decreased plasticity at increasing temperature
    (B) Cannot be moulded
    (C) Easily deform under pressure at high temperature
    (D) None of these

8. Hydrocyanic acid is not shipped in
    (A) Cast iron vessels
    (B) Steel cylinders
    (C) Aluminium containers
    (D) Monel drums

9. Metal at the top of the electromotive series is
    (A) Least active
    (B) Most stable
    (C) Most active
    (D) Most noble

10. Constantan used in thermocouples is an alloy of
    (A) Iron & copper
    (B) Copper & aluminium
    (C) Lead & tin
    (D) None of these

11. Pick out the wrong statement.
    (A) Metal/alloys having hexagonal crystal lattice structure are less malleable than those having cubic crystal lattice structure
    (B) Metal/alloys having body centered cubic (bcc) crystal lattice structure is stronger & less ductile than those having face centered cubic (fcc) crystal lattice structure
    (C) Tungsten has a body centered cubic (bcc) crystal lattice structure
    (D) Both ferritic & austenitic stainless steel has a face centered cubic (fcc) crystal structure

12. Nickel and molybdenum are the basic constituents of
    (A) Hastelloy
    (B) German silver
    (C) Inconel
    (D) Solder

13. Carbon is present in the uncombined (graphitic) form in case of
    (A) Cast iron
    (B) Steel
    (C) Ferroalloy
    (D) None of these

14. Coke oven walls are lined with __________ bricks.
    (A) Silica
    (B) Tar-dolomite
    (C) Low thermal conductivity
    (D) Fire clay

15. Molybdenum steels containing 0.15 to 0.40% molybdenum
    (A) Are prone to temper brittleness
    (B) Are used for automobile parts like gears, axle, shaft, bearings etc.
    (C) Have very poor fatigue resistance
    (D) Do not contain nickel or chromium or both

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