How many methyl groups are present in butylated hydroxytoluene?

Soap is a/an ...... .

Pick the correct statement among the following:

Which of the following statements are not correct?
$a$) Antihistamine also functions as an antacid
$b$) The shape of an active site of an enzyme does not change when the drug binds to an allosteric site
$c$) Chemical messengers communicate the message between two neurons
$d$) Potassium soaps are hard,while sodium soaps are soft to skin
The correct answer is

Which of the following structures represents the compound generally added to soaps to impart antiseptic properties?

Which of the following enhances the lathering property of soap?