The aqueous ferrous ion is green, ferric ion is pale yellow. The aqueous chromic ion is green, hence the colour of chromate ion must be

• orange

• colourless

• yellow

• red

Monomer of polymer 

• 2-methylpropene

• styrene

• propene

• ethene

CO₂ acts as electrophile in which reaction?

• Williamson's reaction

• Kolbe reaction

• Perkin's reaction

• Reimer-Tiemann reaction

Which one of the following undergoes aldol condensation?

• Acetaldehyde

• Propanaldehyde

• Acetone

• All of these

Except one, the other three are isomers, find odd man out

• vinyl alcohol

• ethanol

• oxiran

• oxitane

One amine is more basic than ammonia and the other is less basic than ammonia. The two amines are respectively

• N-methyl ethanamine and N, N-dimethyl ethanamine

• aniline and N-methyl aniline

• N-methyl aniline and aniline

• N, N-dimethyl aniline and benzenamine

47.

One of the isomer of C₄H₁₁N is optically active. It must be a

• primary amine

• secondary amine

• tertiary amine

• all isomers are optically inactive

Bakelite is polymer of phenol and

• HCOOH

• HCOOCH₃

• HCHO

• CH₃COOH

Which of the following is involved in formation of heme?

• Lysine

• Glycine

• Tryosine

• Arginine

The human body does not produce

• enzyme

• DNA

• vitamins

• hormones