Basic Knowledge about Chemical Engineering - Set 51 - ObjectiveBooks
Basic Knowledge about Chemical Engineering - Set 51

Basic Knowledge about Chemical Engineering - Set 51

Practice Test: Question Set - 51

1. Which of the following material handling equipments is not suitable for moving materials in varying paths?
    (A) Hand trolley
    (B) Belt conveyor
    (C) Crane
    (D) Truck
2. A material subjected __________ must have high resilience.
    (A) Shock loading
    (B) Vibration
    (C) Fatigue
    (D) Tension
3. Joule-Thomson co-efficient is the ratio of
    (A) Pressure change to temperature change occurring during adiabatic compression of a gas
    (B) Pressure change to temperature change occurring during adiabatic throttling of a gas
    (C) Temperature change to pressure change occurring during adiabatic compression of a gas
    (D) Temperature change to pressure change occurring during adiabatic throttling of a gas
4. Lead is added to 60:40 brass primarily to improve
    (A) Machinability
    (B) Corrosion resistance
    (C) Fluidity
    (D) Strength
5. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
    (A) Nitrate
    (B) Sulphate
    (C) Carbonate
    (D) Chloride
6. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place
    (A) The better insulation material should be put just next to pipe (i.e., inside)
    (B) The better insulating material should be put outside
    (C) Either of the insulating material could be put on either side
    (D) Steam temperature is considered before deciding as to which insulating material is to be put inside (i.e., just next to the pipe)
7. Glass reacts with
    (A) H2SO3
    (B) HF
    (C) HNO3
    (D) K2Cr2O7
8. Which of the following represents the correct time-temperature curve when a block of metal is heated above room temperature & then left to cool in the room following Newton's law of cooling in which the rate of temperature drop will go on decreasing with the passage of time.
9. Steels with high carbon equivalent have poor Weldability, because in these steels during welding
    (A) Carbon and other alloying elements get oxidized from the weld pool
    (B) Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
    (C) Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
    (D) Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld
10. Out of the following, maximum temperature drop for a given heat flow & for the same thickness will be in the case of
    (A) Steel
    (B) Glass wood
    (C) Copper
    (D) Fireclay bricks
11. What happens, when SO2 is passed through a solution of H2S in water?
    (A) Precipitation of sulphur takes place
    (B) H2SO3 is formed
    (C) Oleum is formed
    (D) None of these
12. Which one can be directly solidified from gaseous state without entering into liquid state?
    (A) Helium
    (B) Oxygen
    (C) Carbon dioxide
    (D) None of these
13. Specific gravity of hot metal (pig iron) is __________ times that of the blast furnace slag.
    (A) 2
    (B) 3
    (C) 0.8
    (D) 6
14. Cold heading or upsetting is categorized as the __________ process.
    (A) Extrusion
    (B) Bending
    (C) Rolling
    (D) Forging
15. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
    (A) Partial pressure of water vapor is less than the total pressure
    (B) Humidity is < 100% & dew point temperature of air has not reached
    (C) Dew point temperature of air has not reached & air is not saturated fully
    (D) Air is fully saturated
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