g (True/false)Sodium borohydride, NaBH4, is a reducing reagent which converts carbonyl to carboxylic acids

False

Explanation:

Sodium borohydride, NaBH4 is a reducing agent. The conversion of a carbonyl to carboxylic acids is an oxidation reaction.

Sodium borohydride, NaBH4 does not perform an oxidation reaction, it is only used for reduction reactions. Hence the statement in the question is false.

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

put the answers   and i could answer.