People suffering from third degree burns may require _______ to overcome the scars.

There are many different strains of rhinoviruses, which cause common cold. State why people are suffering from common cold several times within two or three months.

True or False - if false give the correct statement. Third-degree burns affect only the outer layer of the skin

Neurons of people suffering from diabates mellitus do not secret

People living in hilly regions suffer from ___________ due to iodine deficiency.

A doubly ionised lithium atom is hydrogen like with atomic number Z = 3 . The wavelength of radiation required to excite the electron in Li^(2+) from first to third Bohr orbit will be ______ . (Ionisation energy of hydrogen atom is 13.6 eV)

(a)Find the wavelength of the radiation required to excited the electron is Li^(++) from the first to the third Bohr orbit (b) How many spectral lines are obseved in the emission spactrum of the above excited system?

A student had a breakfast of 200 food calories. He thinks of burning this energy by drawing water from the well and watering the trees in his school. Depth of the well is about 25 m. The pot can hold 25 L of water and each tree requires one pot of water. How many trees can he water? (Neglect the mass of the pot and the energy spent by walking. ("Take g" = 10 ms^(-2))

Explain how the degree of dissociation of an electrolyte may be determined from the measurement of a colligative property.