Answer:
The nichrome wire has contaminants.
The sample solution might be tainted.
Explanation:
If the nichrome wire is contaminated, sodium impurities could be causing the yellow flame. The wire is initially placed in the flame without the sample to check for such impurities.
The testing solution could also be contaminated, causing it to display a color different from the anticipated shade of the test ion.
Answer:
(A) It can be a fundamentally arbitrary process.
Explanation:
In various human disorders, the natural process of protein folding may malfunction, generally beginning with the formation of a very compact state. This process may also include a systematic decrease in the variety of conformational states and the initial creation of localized structures. Thus, option (A) is the only incorrect statement.
