The structural formula of benzene is:

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms,e.g.,hydrogen. After the formation of four bonds,carbon attains the electronic configuration of:

State whether the following statement is true or false:
Animal fats generally contain saturated fatty acids,which are said to be good for health.

State reasons to explain why covalent compounds:
$(i)$ are bad conductors of electricity?
$(ii)$ have low melting and boiling points?

Which enzyme or substance is responsible for the conversion of milk into curd?

Both soap and detergent are some type of salts. What is the difference between them? Describe in brief the cleansing action of soap. Why do soaps not form lather in hard water? List two problems that arise due to the use of detergents instead of soaps.