Related Questions

Extraction of pencillin employs a __________ extraction coloumn.
A Centrifugal
B Packed
C Plate
D None of these
Diaphragm electrolytic cell as compared to mercury electrolytic cell
A Produces 70% NaOH solution
B Requires less specific power consumption for the production of chlorine
C Requires lesser investment for similar capacity
D All of the above
Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
A Has larger production capacity per unit cell
B Consumes less power per ton of Cl2 produced
C Produces high purity (70%) caustic soda directly
D All of the above
A garments factory employs 3 categories of workers K, M and N. The efficiency of the 3 categories of workers to do a specific task is in the ratio of 3 : 5 : 6 respectively and the factory employs 15 of category K, 12 of category M and 3 of category N. If the total wages paid to the entire group of 30 workers is Tk. 492 per hour, what will be the wages earned by a category N worker for an 8-hour day?
A Tk. 144
B Tk. 72
C Tk. 192
D Tk. 576
Q.(1-4): Answer the questions on the basis of the information given below. * F,G and H are insurance companies , Q,R,S and T are private detectives .Each detective works for at least one of the insurance companies. * Q always works for F and at least one of the other companies. Some of the time G employs only one of these detectives,' the rest of the time it employs exactly two of them. *F and H each employ exactly two of these detectives all the time. If R works for H only, and if S works for G and H only, T works for--
A F only
B G only
C H only
D both F and G
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when
A Extracting solvent is cheaply & abundantly available
B One of the liquid components is heat sensitive
C Viscosity of liquid components is very high
D One of the liquid components has very high affinity towards the solvent
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)
A Increases
B Decreases
C Remains unaffected
D Increases Linearly
Cement setting under water employs a/an __________ process.
A Hydration
B Decomposition
C Oxidation
D Reduction
Separation of __________ employs gaseous diffusion process.
A N2 and O2 from air
B Isotopes of uranium
C Isotopes of helium
D SO2 and air
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?
A High cost of mercury
B High specific gravity of mercury
C Non-availability of high purity mercury
D Pollution of water stream by mercury

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