Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral disease.

Name the most common viral disease

Name the genetic material found in viruses

(A) Define neuron. Name the two type of processes of an ideal human neuron and write their respective structures in brief. What are the functions of these two types of processes respectively ?

(1) Give structure and IUPAC name of an optically active alkane having lowest molecular mass. Is there another alkane of the same molecular mass that is also optically active? (2) Give example of a compound which exhibits both optical & geometrical isomerism.

An organic compound (A) of molecular formula C_7H_7NO , on treatment with P_2O_5 produces (B). Reaction of both (A) and (B) with LiAlH_4 gives (C ). Acid hydrolysis of (A) and (B) affords benzoic acid. Identify A, B and C. Write the name and structure of the monomer of natural rubber.