21.

The lanthanide ion that would show colour is :

• Lu³⁺

• Sm³⁺

• La³⁺

• Gd³⁺

An organic compound neither reacts neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is:

The major product of the following reaction is :

Maltose on treatment with dilute HCl gives:

• D – glucose and D-Fructose

• D – glucose

• D-Fructose

• D-Galactose

The IUPAC name of the following compound is:

H₃C-$\stackrel{{\mathrm{CH}}_3}{\stackrel{|}{\mathrm{CH}}}-\stackrel{\mathrm{OH}}{\stackrel{|}{\mathrm{CH}}}$-CH₂-COOH

• 3-Hydroxy-4-methylpentanoic acid

• 4,4-Dimethyl-3-hydroxybutanoic acid

• 4-Methyl-3-hydroxypentanoic acid

• 2-Methyl-3-hydroxypentan-5-oic acid

Coupling of benzene diazonium chloride with 1-naphthol in alkaline medium will give:

Which of the following amines can be prepared by Gabriel phthalimide reaction ?

• n-butylamine

• neo-pentylamine

• t-butylamine

• triethylamine

The major product of the following reaction is:

The major product of the following reaction is:

An organic compound ‘X’ showing the following solubility profile is:

• m-Cresol

• Benzamide

• Oleic acid

• o-Toluidine