Basic Question of Chemical Engineering - Set 33 - ObjectiveBooks

Basic Question of Chemical Engineering - Set 33

Practice Test: Question Set - 33

1. Tempering of a material does not improve its
    (A) Machinability
    (B) Toughness
    (C) Internal stress level
    (D) Softness

2. Suitability of steel for its use in cable is judged by its strength in
    (A) Tension
    (B) Compression
    (C) Torsion
    (D) Shear

3. In connection with corrosion of metals, passivation is the process that
    (A) Intensifies deterioration
    (B) Changes the composition of the metal
    (C) Inhibits further deterioration
    (D) None of these

4. Change in volume of metals from absolute zero temperature to their melting points is
    (A) Almost same for all metals
    (B) Different for different metals
    (C) Less for low melting point metals
    (D) Less for high melting point metals

5. On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.
    (A) Frequency
    (B) Amplitude
    (C) Damping
    (D) None of these

6. One ton of refrigeration is not equivalent to the heat removal rate of
    (A) 200 BTU/minute
    (B) 50 kcal/minute
    (C) 50 kJ/sec
    (D) 3.5 KW

7. Which of the following forces does not act on a fluid at rest?
    (A) Viscous force
    (B) Gravity force
    (C) Hydrostatic force
    (D) Surface tension force

8. Which of the following commonly used condenser tube materials has the lowest thermal conductivity?
    (A) Admiralty brass
    (B) Stainless steel
    (C) Aluminium brass
    (D) Titanium

9. Cold cracking in the heat affected zone of a high strength steel weld can take place because of the
    (A) Retained austenite
    (B) Martensite formation
    (C) Relatively high sulphur content in the base metal
    (D) Sufficient hydrogen present in the welding arc

10. Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid?
    (A) p
    (B) 2 p
    (C) 0.5 p
    (D) 0.25 p

11. Moist climate is the most favorable factor in the site selection far a
    (A) Steel plant
    (B) Textile factory
    (C) Petroleum refinery
    (D) Coke oven battery

12. In chemical dehumidification of air
    (A) Both specific humidity & dry bulb temperature increases
    (B) Both specific humidity & dry bulb temperature decreases
    (C) Specific humidity decreases & dry bulb temperature increases
    (D) Specific humidity increases & dry bulb temperature decreases

13. The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is
    (A) More
    (B) Less
    (C) Same
    (D) More but less than the diameter of bolt

14. Fire refining process is employed in case of
    (A) Tin
    (B) Copper
    (C) Zinc
    (D) Aluminium

15. Powder metallurgy is used to produce
    (A) High precision components with complex cavities and sharp features
    (B) Components of large size
    (C) Porosity free components
    (D) Components of such alloys whose constituents do not form alloys readily

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