Chemical Engineering Basics Quiz Questions - Set 24 - ObjectiveBooks

Chemical Engineering Basics Quiz Questions - Set 24

Practice Test: Question Set - 24

1. The difference between gross & net calorific values of fuel is due to the
    (A) Sensible heat carried away by the flue gases
    (B) Heat carried away by the steam from the moisture content of the fuel
    (C) Heat lost by radiation
    (D) Heat carried away by steam from the combustion of hydrogen in the fuel

2. A solar cell converts the sunlight directly into __________ energy.
    (A) Thermal
    (B) Electrical
    (C) Mechanical
    (D) Chemical

3. The starting of a car takes time in winter, because the
    (A) Octane number of fuel is decreased
    (B) Fuel supply for ignition is not sufficient
    (C) Vaporization of the fuel is decreased
    (D) Pour point of fuel decreases

4. The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the
    (A) Pipe roughness & pipe diameter
    (B) Fluid velocity
    (C) Type of flowing fluid
    (D) Both 'b' & 'c'

5. An alloy of Fe - 0.4 % C is
    (A) Cast iron
    (B) Hypo-eutectoid steel
    (C) Hyper-eutectoid steel
    (D) Eutectoid steel

6. Which of the following does not discharge the dust collected as a dry solid?
    (A) Electrostatic precipitator
    (B) Wet scrubber
    (C) Bag filter
    (D) Gravity settling chamber

7. Pressure required to increase the density of water by about 1% is __________ atmosphere.
    (A) 10
    (B) 50
    (C) 200
    (D) 1000

8. If the demand for an item is trebled and the order cost is reduced to one third, then the economic order quantity
    (A) Is trebled
    (B) Remains unchanged
    (C) Decreases by a factor of 3
    (D) Decreases by a factor of 1/3

9. Hydro-cyclone is a
    (A) Crusher
    (B) wet classifier
    (C) Dry classifier
    (D) Magnetic separator

10. A dense structure of grinding wheel is not used for the
    (A) Ductile material
    (B) Hard materials
    (C) Brittle materials
    (D) Finishing cuts

11. Tin based white metals are used, where bearings are subjected to
    (A) High pressure & load
    (B) Low pressure & load
    (C) High temperature
    (D) Large surface wear

12. Direct conversion of thermal energy to electrical energy is facilitated by the
    (A) Fuel cells
    (B) Photo voltaic cell
    (C) Magneto hydrodynamic generator
    (D) None of these

13. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.
    (A) 100
    (B) 200
    (C) 1000
    (D) 2000

14. Annealing of white cast iron produces __________ iron.
    (A) Grey
    (B) Nodular
    (C) Malleable
    (D) Spheroidal

15. For preparation of porous bearings by powder metallurgy, preferred particle shape is
    (A) Spherical
    (B) Nodular
    (C) Irregular
    (D) No preferred shape

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