What is paramagnetism? Give example.

What are paramagnetic substances? What is the reason of paramagnetism? Give two examples of paramagnetic substance.

What is Aromatisation? Give example.

What is metamerism? Give an example

What is metamorphosis? Give example.

What are analgesics? Give examples.

What is meant by diamagnetic and paramagnetic? Give one example of diamagnetic and paramagnetic transition metal and lathanides metal.

what is a retrovirus?Give example?