$A$ person who is habituated to drinking alcohol is given a medicine called $......$

Which of the following are correct structural isomers of butane $(C_4H_{10})$?
$(i)$ $n$-butane: $CH_3-CH_2-CH_2-CH_3$
(ii) Isobutane ($2$-methylpropane): $CH_3-CH(CH_3)-CH_3$
(iii) Cyclobutane: $A$ four-carbon ring structure $(C_4H_8)$
(iv) Ethane dimer: Not a valid isomer of butane.

Identify the unsaturated compounds from the following:
$(i)$ Propane
$(ii)$ Propene
$(iii)$ Propyne
$(iv)$ Chloropropane

Write three different chemical reactions showing the conversion of ethanoic acid to sodium ethanoate. Write balanced chemical equations in each case. Write the name of the reactants and the products other than ethanoic acid and sodium ethanoate in each case.

Identify the functional groups present in the following compounds:
$(a) CH_3COCH_2CH_2CH_2CH_3$
$(b) CH_3CH_2CH_2COOH$
$(c) CH_3CH_2CH_2CH_2CHO$
$(d) CH_3CH_2OH$

State whether the following statement is true or false:
Alcohols react with sodium to evolve carbon dioxide.