The $IUPAC$ name of the following compound is: $CH_3-CH=C(CH_2-CH_3)-CH_2-CH_2-CH_3$

Arrange the following in decreasing order of priority for functional groups of organic compounds:
$(a) -NH_2, -OH, -CN, >C=O, -C \equiv C, >C=C < $
$(b) >C=O, -CHO, -COCl, -COOH, -COOR, -CONH_2, -CN$
$(c) -SO_3H, -CN, -COR, -C \equiv C, >C=C < $

Write the $IUPAC$ names of the following compounds:
$(1)$ $CH_2=CH-CH=CH_2$
$(2)$ $C_6H_5-CH_2-CH_2-CH=CH_2$
$(3)$ $2-methylphenol$ (structure provided)

The suffix of the principal group,the prefixes for the other groups and the name of the parent in the structure $HO-CH_2-CH(CH_3)-CH=C(Cl)-CH_2-C(=O)-C(=O)OH$ are:

Which of the following is the correct molecular formula for benzonitrile?

Which of the following molecules does not contain a chiral carbon?