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

Name the most common viral disease

Give a brief account of genetic engineering.

Give a brief account of genetic engineering.

Name the genetic material found in viruses.

Give a brief account of the oxidising, reducing and acidic nature of H_(2)O_(2) .

Name any two viruses with RNA as genetic material ?

Give an account of artificial chromosomes in transfer of genetic material.

Name any three viruses which have RNA as the genetic material.

Write the structures of isomeric hexynes and also give their IUPAC names.

The area under velocity-time graph gives the displacement whereas the slope of velocity-time graph at any point gives acceleration at that point. Slope is +ve if the line makes an acute angle in the anticlockwise direction with respect to the positive direction along which the independent variable increases. From the calculus, we also know that the slope of the tangent to a y vs. x graph is given by (dy)/(dx) If (dy)/(dx) is +ve then y increases with x, otherwise it decreases. Consider two persons namely Ram, and Rahim, who have gone to picnic at a nice place. Finding a beautiful place they rush towards it simultaneously. Let us take the time when they start simultaneously at t= 0 and at this instant the position of Ram and Rahim be x = 0 and x = + 48, respectively. Ram maintains a uniform velocity of +10 m/s throughout the journey whereas Rahim starts from rest and continuously accelerates with + 1 m//s^(2) Q The velocity-time graph as well as the acceleration-time graph of Ram and Rahim are respectively,