Chemical Engineering Quiz Questions and Answers - Set 44 - ObjectiveBooks
Chemical Engineering Quiz Questions and Answers - Set 44

Chemical Engineering Quiz Questions and Answers - Set 44

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Practice Test: Question Set - 44

1. Addition of __________ to steel does not help in improving its machinability.
    (A) Sulphur
    (B) Silicon
    (C) Lead
    (D) Phosphorous
2. The cathode in an electrochemical cell always carries
    (A) Negative charge
    (B) Positive charge
    (C) Zero charge
    (D) Positive or negative charge depending upon the nature of the cell
3. __________ can replace tungsten in high speed steel.
    (A) Chromium
    (B) Vanadium
    (C) Cobalt
    (D) Molybdenum
4. Electrometallurgical methods of metal extraction is normally used for those metals
    (A) Whose oxide/ore is not reduced by carbon
    (B) Which fall in the category of alkali & alkaline earth metals
    (C) Which stands higher in the electrochemical series of the metal
    (D) All (a), (b) & (c)
5. Multistage compression of air as compared to single stage compression offers the advantage of
    (A) Power saving per unit weight of air delivered
    (B) Moisture elimination in the inter-stage cooler
    (C) Increased volumetric efficiency
    (D) All (a), (b) & (c)
6. In electrical resistance welding, distortion results from the use of improper
    (A) Clamping methods
    (B) Electrodes
    (C) Current
    (D) Filler material
7. Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat interaction of 3000 kJ causes the surroundings to be heated. Internal energy change of the gas during the compression is __________ kJ.
    (A) +4000
    (B) -4000
    (C) 10000
    (D) -10000
8. Air standard Otto cycle is more efficient than the diesel cycle for the same
    (A) Heat addition & compression ratio
    (B) Heat addition & pressure
    (C) Compression ratio & pressure
    (D) Cylinder dimension & rpm
9. Age hardening is connected with
    (A) Babbitt metal
    (B) Gun metal
    (C) Stainless steel
    (D) Duralumin
10. Hydrogen can be
    (A) Used in I.C. engines as fuel
    (B) Liquefied & stored under cryogenic conditions
    (C) Produced by electrolysis of water
    (D) All (a), (b) & (c)
11. Percentage of argon (by volume) in dry atmospheric air is about
    (A) 0.09
    (B) 0.3
    (C) 0.57
    (D) 0.94
12. A compact estimate about the amount of materials handling between various work stations is obtained from the
    (A) Gantt chart
    (B) Bin chart
    (C) String diagram
    (D) Travel chart
13. __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.
    (A) Veneering
    (B) Galvanizing
    (C) Electroplating
    (D) Calorising
14. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.
    (A) Percentage elongation
    (B) Brinell hardness
    (C) Tensile strength
    (D) All 'a', 'b' & 'c'
15. Normalizing of a casting does not
    (A) Induce stresses in it
    (B) Refine its grain structure
    (C) Reduce segregation
    (D) Improve its mechanical properties
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