Identify from the following plant parts,the major contributors to human food?

The major product of the following reaction is:

If $A$ and $B$ are mutually exclusive events with $P(B) \neq 1$,then $P(A \mid \bar{B})$ is equal to (Here $\bar{B}$ is the complement of the event $B$)

Ammonia acts as a ligand but ammonium ion does not form complexes because

Which one of the following statements is $NOT$ the property of light?

Which of the following diseases is caused by a protozoan?