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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 19
16.
Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
atoms
neutrons
nucleons
electrons
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
The product of a commercial direct reduction process is
liquid iron
solid iron
sponge iron
iron saturated with carbon
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
In the diving apparatus, helium is used along with oxygen, because it is
easily available.
not soluble in blood at high pressure.
lighter than nitrogen.
completely miscible with oxygen.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Materials having resistivity ranging from 1 to 100 ohm. cm is termed as
conductor
insulator
semi-conductor
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
During sensible cooling of air, its wet bulb temperature
decreases but dew point remains constant.
increases but dew point remains constant.
increases & the dew point decreases.
decreases & the dew point increases.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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