Draw the structure of ;
3-chloro-4-hydroxylbutanoic acid.

Explanation:

butanoic acid has four carbon atoms, with last carbon being the carbonyl carbon

• chlorine molecule is on the third carbon from the right hand side [ carboxylic group side ]

• hydroxyl molecule is on the fourth carbon fromright hand side.

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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