Scurvy results in weakness in collagen fibers because the enzymes that catalyze of proline and lysine residues in collagen require Vitamin C.

Hydroxylation

Explanation:

Hydroxylation is a chemical process that introduces a hydroxyl group (-OH) into an organic compound. In biochemistry, hydroxylation reactions are often facilitated by enzymes called hydroxylases. Hydroxylation is the first step in the oxidative degradation of organic compounds in air.

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong