An organic compound having the molecular formula C2H60 can exist in the form of two isomers A and B having different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory (a) What is compound A ? (b) Write the electron-dot structure of A. (c) What is compound B ? (d) Write the electron-dot structure of B. (e) Name the lower homologue of compound B which is used in preserving biological specimens. Lakhmir Singh Chemistry Class 10

An organic compound having the molecular formula C2H60 can exist in th

1.	An organic compound having the molecular formula C2H60 can exist in the form of two isomers A and B having different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory (a) What is compound A ? (b) Write the electron-dot structure of A. (c) What is compound B ? (d) Write the electron-dot structure of B. (e) Name the lower homologue of compound B which is used in preserving biological specimens. Lakhmir Singh Chemistry Class 10
Answer» a) Isomer A, which is used as a nailpolish REMOVER is Propanone. This has a FUNCTIONAL GROUP C=O and belongs to the homologous series of Ketone.b) Propanone's electron dot structure is: H O H × • • × • • • • H×•C••C••C•×H • • × × H Hc) Isomer B, which is a liquid is PROPANAL. It has a functional group CHO, and belongs to the homologous series of aldehydes.d) Propanal's electron dot structure is: H H O × × • • • • • • H×•C••C••C•×H • • × × H He) The lower homologue compound of B used for preservation of Biological specimen is Methanal which is ALSO an aldehyde.