How does H_2O_2 help in restoration of old lead paintings?
Answer briefly: (a) Why are villi present in the intestine and not in the stomach? (b) How does pepsinogen change into its active form? (c) What are the basic layers of the wall of alimentary canal? (d) How does bile help in the digestion of fats?
How does bile help in the digestion of fats?
State the configuration of alpha animo acids.
What do you mean by isoelectic point of an animo acid? Write down the structure formula of alanine at pI.
How does pruning help in making the hedge dense?
What is meant by green chemistry ? How does it help in decreasing environmental pollution ?
How does one explain the emission of electrons from a photosensitive surface with the help of Einstein's photoelectric equation?
