Answer:
B. Alkylation
Explanation:
Electrophilic aromatic substitution -
The subsitution reaction , where the hydrogen atom of an aromatic ring is replaced by an external electrophile .
Alkylation reaction -
The subsitution reaction , where the hydrogen atom of an aromatic ring ( benzene) is replaced by an alkyl group , is called an alkylation reaction .
The reaction mechanism involves a <u>carbocation intermediate .</u>
Hence , the correct option is B. Alkylation .
In a four-stroke engine, the timing gears control when the valves open and close.
Answer is C. When the valves open and close.
Wrong answer is A,B,and D.
it will help you
Answer:
I think its B im not sure
but i hope this helps
I don't know sorry I wish I could help