51.

Which complex cannot ionise in solution?

• [CoCl₃(NH₃)₃]

• K₄[Fe(CN)₆]

• K₂[Pt(F₆)]

• [Pt(NH₃)₆]Cl₄

The amino acid which is not optically active is

• lactic acid

• serine

• alanine

• glycine

Denatured alcohol is

• ethanol + methanol

• rectified spirit + methanol + naphtha

• undistilled ethanol

• rectified spirit

Hofmann's bromamide reaction is to convert

• acid to alcohol

• alcohol to acid

• amide to amine

• amine to amide

Paracetamol is a/an

• antipyretic

• analgesic

• both (a) and (b)

• antimalarial

An alkyl halide reacts with alcoholic ammonia in a sealed tube, the product formed will be

• a primary amine

• a secondary amine

• a tertiary amine

• a mixture of all the three

The reagent used in Clemmensen's reduction is

• conc. H₂SO₄

• Zn-Hg conc. HCl

• aq. KOH

• alc. KOH

A metal present in vitamin B₁₂ is

• aluminium

• zinc

• iron 

• cobalt

Decomposition of benzene diazonium chloride by using Cu₂Cl₂/ HCl to form chlorobenzene is

• Raschig's reaction

• Sandmeyer's reaction

• Kolbe's reaction

• Cannizaro's reaction

The product formed when hydroxylamine condenses with a carbonyl compound is called

• hydrazide

• oxime

• hydrazine

• hydrazone