Which polymer is formed by reacting a compound containing two carboxylic acid groups and a compound containing two hydroxyl groups?

While cooking,if the bottom of the vessel is getting blackened on the outside,it means that:

What is used to preserve the dead bodies of animals?

The correct electron dot structure of a water molecule is:

List four characteristics of homologous series.

Why are homologous series of carbon compounds so called? Write the chemical formula of two consecutive members of a homologous series and state the part of these compounds that determines their $(i)$ physical properties,and (ii) chemical properties.