Basic Definitions in Chemical Engineering pdf - Set 57 - ObjectiveBooks
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Basic Definitions in Chemical Engineering pdf - Set 57

Practice Test: Question Set - 57


1. Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode
    (A) Occurs higher in the electro-chemical series of metals
    (B) Is exemplified by magnesium plate
    (C) Is much cheaper than the cathodic base material to be guarded against corrosion
    (D) All (a), (b) & (c)

2. Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30%?
    (A) 9,100
    (B) 13,000
    (C) 7,000
    (D) 2,550

3. Energy to be supplied to the radioactive nucleus for the emission of a neutron is __________ MeV.
    (A) 0.8
    (B) 7.8
    (C) 200
    (D) 10000

4. Triple point of water is
    (A) 0°F
    (B) 492°R
    (C) 0°K
    (D) -273°C

5. Euler number is defined as the ratio of inertia force to __________ force.
    (A) Pressure
    (B) Elastic
    (C) Gravity
    (D) Viscous

6. Ganister contains maximum percentage of
    (A) FeO
    (B) SiO2
    (C) MgO
    (D) MnO2

7. Pick out the wrong statement.
    (A) The X-rays cannot be deflected by electric field unlike cathode rays
    (B) The intensity of X-rays can be measured by ionization current produced due to the ionization of gas by X-rays
    (C) The quality of X-rays can be controlled by varying the anode-cathode voltage
    (D) Crystal structure of a material can be studied by an electron microscope

8. In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will
    (A) Decrease gradually
    (B) Increase gradually
    (C) Increase rapidly
    (D) Remain constant

9. The co-ordination number in simple cubic structure is
    (A) 4
    (B) 6
    (C) 8
    (D) 12

10. Liquor poisoning generally occurs due to the presence of __________ in it.
    (A) Ethyl alcohol
    (B) Impurities
    (C) Methyl alcohol
    (D) Carbonic acid

11. In inventory control theory, the economic order quantity (EOQ) is the
    (A) Lot size corresponding to break even analysis
    (B) Average level of inventory
    (C) Optimum lot size
    (D) None of these

12. 'Flare tower' used in industry is meant for
    (A) Venting off (after burning) the excess inflammable/toxic gases at high pressure
    (B) Absorbing the pollutant gases from the furnace exhaust
    (C) Cooling of furnace exhaust gases
    (D) None of these

13. Solute atoms which cause yield point phenomenon in mild steel are/is
    (A) Aluminium
    (B) Boron
    (C) Carbon
    (D) Nitrogen

14. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to (where, T = absolute temperature, °K)
    (A) T
    (B) 1/T
    (C) T2
    (D) 1/T2

15. Heat required to raise the temperature of a body by 1 °C is called its
    (A) Heat capacity
    (B) Specific heat capacity
    (C) Thermal conductivity
    (D) Water equivalent

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