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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 26
41.
Plants produce carbohydrates from the CO2 present in the atmosphere by
polymerisation.
photochemical reaction.
oxidation.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Identify the correct statement with reference to the extractive metallurgy of aluminium.
The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3.
Approximately 80% of the aluminium deposited on the cathode comes from cryolite.
Sodium is deposited along with aluminium, but is immediately vaporised.
Anode effect sets in when the cryolite concentration goes below 40%.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to
(particle diameter)1/2
particle diameter
(particle diameter)2
(particle diameter)3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?
Tungsten
Chromium
Vanadium
Cobalt
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Pick out the wrong statement.
Geothermal energy is a non-conventional source of energy.
Mass is converted into energy in both nuclear fission & fusion reaction.
Inhalation of mercury vapour is not harmful for human beings.
Inhalation of arsenic causes cancer.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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