Organic Chemistry

This option is correct because chlorination of propane at 400⁰C and 74-100 atmospheric pressure forms hexachloroethane in solids. It called artificial comphor.

This option is wrong because these are the secondary explosives. 50% more powerful than TNT by mass, torpex comprises of 42% RDX, 40% TNT, and 18% powdered aluminium.

This option is correct because oil is hydrolysed with steam to remove fatty acids and mixed with paraffin wax to make candles. After removing fatty acids, mainly glycerol remains, which is called sweet water.

This option is correct because benzendiazonium chloride is reduced with SnCl₂/NaOH to form benzene and removes nitrogen gas.

This option is correct because it is a white water soluble. The sweet and metallic testing poisonous powder or granules C₄H₄KO₇Sb is used as mordant for dyeing textile and leather. It is also used in medicine as an expectront for inducing vomiting and for infection by schistosomes.

This option is correct because cuminaldehydes is formed by the reduction of 4-isopropyl benzoyl chloride. It is the essential oil of eucalpytus.

This option is correct because acetamide reacts with Br₂ and KOH to give methyl amine. This reaction is called hoffmann reaction.

This option is correct because the cetane number is used for the measuring of the knocking character of the fuels in diesel engines and ignites very readily, hence this measures the cetane number.

This option is correct because benzene is activated by the nitro group when it is mostly fused with KOH to form ortho-nitrophenol and para-nitrophenol.

This option is correct because vitamins B₆ and B₁ are related to pyridoxine and thiamine.

This option is correct because para-xylene is treated with strong oxidising agent potassium permanganate to form terphthalic acid.

This option is correct because when benzene reacts with propene which is catalysed by the AlCl₃/H₃PO₄, it gives cumine.

This option is correct because the duff reaction can also prepare salicylaldehyde by the heating of phenol with hexamethylenetetramine, glycerol and boric acid but an interesting reaction of salicylaldehyde is its oxidation with alkaline hydrogen peroxide to form catechol.

This option is correct because diasotised sulphanilic acid undergoes coupling reaction with N-N dimethyl aniline to give methyl orange. The methyl orange acts as the acid based titration. The chemical name of methyl orange is sodium 4-[(4-dimethylamino)phenylazo]benzene sulphonate.

This option is correct because when the polymerization of acetaldeydes is done in the presence of conc. sulphuric acid, it forms paraldehydes. It gives a pleasant smelling liquid and this is used in medicine as a hypnotic.