Which functional group participates in disulphide bond formation in proteins ?

• Thiolacetone

• Thiol

• Thioether

• Thioester

Isomers of propionic acid are

• HCOOC₂H₅ and CH₃COOCH₃

• HCOOC₂H₅ and C₃H₇COOH

• CH₃COOCH₃ and C₃H₇OH

• C₃H₇OH and CH₃COCH₃

Metamers of ethyl propionate are

• C₄H₉COOH and HCOOC₄H₉

• C₄H₉COOH and CH₃COOC₃H₇

• CH₃COOCH₃ and CH₃COOC₃H₇

• CH₃COOC₃H₇ and C₃H₇COOCH₃

What is the correct IUPAC name of

• 4-methoxy-2-nitrobenzaldehyde

• 4-formyl-3-nitro anisole

• 4-methoxy-6-nitrobenzaldehyde

• 2-formyl-5-methoxy nitrobenzene

75.

The safest and the most commone alternative of sugar is

• glucose

• aspartame

• saccharin

• cyclodextrin