A. Aluminium
B. Silver
C. Copper
D. All A, B. and C
Related Mcqs:
- 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 A , B. and C - 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 - Cement setting under water employs a/an _______________ process ?
A. Hydration
B. Decomposition
C. Oxidation
D. Reduction - Concentration of NaOH solution produced by diaphragm electrolytic cell is about _______________ percent?
A. 10
B. 25
C. 50
D. 98 - What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?
A. Cl2 & Na
B. Cl2 & H2
C. O2 & H2
D. Cl2, H2 & NaOH solution - Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?
A. Oxidation of Na+ ions
B. Oxidation of Cl- ions
C. Reduction of Na+ ions
D. Reduction of Cl- ions - Concentration of NaOH solution produced by mercury electrolytic cell is about _______________ percent?
A. 10
B. 25
C. 50
D. 98 - Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?
A. 25
B. 60-70
C. 150-200
D. 250-300 - Solvay process as compared to dual process (i.e. modified Solvay process) ?
A. Can use low grade brine
B. Has less corrosion problems
C. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
D. Both B. and C. - ______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?
A. Bauxite
B. Limestone
C. Quartz
D. Manganese
