How many total isomers (aldehydes and ketones) are possible for the molecular formula $C_4H_8O$?

Write the $IUPAC$ names of the following ketones and aldehydes. Wherever possible,give also common names.
$(i)$ $CH_{3}CO(CH_{2})_{6}CH_{3}$
$(ii)$ $CH_{3}CH_{2}CHBrCH_{2}CH(CH_{3})CHO$
$(iii)$ $CH_{3}(CH_{2})_{5}CHO$
$(iv)$ $Ph-CH=CH-CHO$
$(v)$ Cyclopentane ring attached to $-CHO$ group
$(vi)$ $PhCOPh$

State True or False for the following statements:
$(i)$ Acetone is a propanone and there is an amide group in it.
$(ii)$ Acetone is dimethyl ketone.
$(iii)$ The formula of acetone is $CH_3COCH_3$.
$(iv)$ Acetone possesses a carbonyl group.

How many total ketones are possible for the molecular formula $C_5H_{10}O$?

Explain the bond formation and structure of the carbonyl group with a suitable diagram.

The molecule having a formyl group is