Name the algae from which algin is prepared commercially

DDT is prepared from

Kerala state is known for its production of natural rubber. Rubber has certain remarkable properties which make it valuable for a variety of uses Write the name of a synthetic rubber which can be considered as a homopolymer. Name the monomer from which it is prepared

Find the number of metals from the given metals which can be commercially purified by zone refining methods: Si, Ge,Ga,Al,Ti,Zr.

Some students were very curious about the medium of tissue culture. Name the algae from which it is obtained.

Chloroform can be prepared from Methane: What is the name of reaction when chlo-roform is prepared from methane?

Name the process by which introns are removed from mRna.

Benzoyl chloride is prepared from benzoic acid by

Select the acid(s) which cannot be prepared from Grignard reagent Acetic acid Succinic acid Formic acid All of these