1.

S is a well known pain killer which of the following is 'R' ?

Answer»

`CH_(3)-overset(O)overset(||)(C)-NH_(2)`
`CH_(3)-overset(O)overset(||)(C)-O-overset(O)overset(||)(C)-CH_(2)`
`CH_(3)-overset(O)overset(||)(C)-H`
`CH_(3)-overset(O)overset(||)(C)-CH_(3)`

Answer :B


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