Table salt, nacl
give only the names of the elements alphabetically, separating them with commas.

NaCl = Sodium(Na) Chlorine(Cl)

Answer = Chlorine,Sodium (Alphabetically)

Explanation:

Sodium chloride, also identified as salt, is an ionic compound with the chemical formula NaCl, drawing a 1:1 ratio of sodium and chloride ions. Sodium chloride also has numerous different uses for seasoning and storing foods. Hospitals use an intravenous sodium chloride solution. Sodium Chloride Injection 0.9% can also be practiced as a dry irrigation solution.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current