Ketones are obtained by the reaction between acid chlorides and Grignard reagent .

$\underset{\mathrm{Acetyl} \mathrm{chloride}}{{\mathrm{CH}}_3\mathrm{COCl}}$ + CH₃MgX $\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$ $\underset{\mathrm{Di} \mathrm{methyl} \mathrm{ketone}}{({\mathrm{CH}}_3{)}_2-\mathrm{C}=\mathrm{O}}$ + MgClX

A compound (C₅H₁₀Cl₂) on hydrolysis gives C₅H₁₀O , which reacts with hydroxylamine , so C₅H₁₀O  must be aldehydic or ketonic group but it does not give Fehling test , so it must be a ketone and it form iodoform which is a charactertistic test of CH₃CO group .

Iodine is used as an antiseptic which is used for curing wounds .

Molisch's test is used in testing of carbohydrate and is not used in testing of proteins .

Penicillin is not a .broad spectrum antibiotic , it discovered by Alexander Flemming .It is effective against pneumonia , bronchitis , sore throat etc .

Phenol couples with benzene diazonium chloride in slightly basic medium to form a brillant red coloured azo dye .

p - hydroxy azobenzene (Brillant red dye)

The IUPAC name of this compound is 3 - methyl 1 - butene .

In photography sodium thiosulphate (hypo) is used as a complexing agent .It dissolves unreduced silver bromide by forming a complex .

AgBr + $\underset{\mathrm{hypo} }{2{\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3}$ $\to$ $\underset{\mathrm{Sodium} \mathrm{argent} \mathrm{of} \mathrm{thiosulphate} \left(\mathrm{soluble}\right)}{{\mathrm{Na}}_3\left[\mathrm{Ag}\right({\mathrm{S}}_2{\mathrm{O}}_3{)}_2]}$ + NaBr

Cobalt - 60 is used in the treatment of cancer .

Phenol and benzoic acid can be distinguished by NaHCO₃ because only stronger acid reacts with sodium bicarbonate .