Describe the formation of depletion layer in a p-n junction diode. Explain the I-V characteristics of p-n junction in forward and reversed biased conditions.

Explain the effect of doping on the energy band diagram of a semiconductor.

What is water pollution? Differentiate between groundwater and surface water pollution.

What is water pollution? Differentiate between groundwater and surface water pollution.

What is WDT? Explain its functions

What is integrated watershed management? Describe how it is important in sustaining livelihood of rural people?

Discuss the important functions of Project Implementing Agency.

Describe the main step different state governments have taken for enforcing rainwater harvesting?

Write advantages and limitations of the roof top rainwater harvesting.

Visit a nearby river and observe the colour of water at different places in the river and compare it with the water available at your home.

Rainwater harvesting was practiced in ancient time, discuss with suitable examples.

Describe the role of groundwater in Irrigation.

Define rainwater harvesting. Explain why rainwater harvesting is important in major cities of the country?

Explain the main bands appearing in the IR spectra of alkanes and alkenes. What are the differences in the IR spectra of these two classes of compounds?

Give the normal modes of vibrations of a triatomic linear and triatomic angular molecule with suitable diagrams.

Explain the solvent effect on electronic spectra for n - transitions. In which solvents are they particularly seen?

Give the transitions that are observed in the electronic spectra of the acetylenic and the benzenoid chromophore.

b) Predict the shift in absorption intensity observed in chloroethylene. CH₂=CHCl

a) Explain blue shift.

With the help of a suitable diagram explain the order of molecular orbital energies observed in small organic molecules.