Explain briefly the superconductivity.

Explain briefly the principle on which a transistor-amplifier works as an oscillator. Draw the necessary circuit diagram and explain its working.

Explain briefly the structure of an ideal forest.

Explain briefly on the following Inductive effect.

Explain briefly on the following Reduction and oxidation reactions.

Explain briefly the translational kinetic energy of a gas.

Explain briefly on the following Substitution reaction.

Explain briefly on the following Addition reaction.

Explain briefly the three processes due to which generation of emf takes place in solar cell.

Explain briefly the following term with suitable example :- (i) protonema (ii) antheridium (iii) archegonium (iv) diplontic (v) sporophyll (vi) isogamy

Explain briefly on the following Elimination reaction.