Integration of cos⁴x.
Answer:-
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Mean value of alternating current.
Answer:- Mean value of a.c. is that value of steady current which sends the same amount of charge, through a circuit, in same time as is done by a.c. in half its cycle.
Tautomerism.
Answer:- In this type of Isomerism, the isomers exist in dynamic equilibrium with eachother.When a ketone and enol isomers exist in equilibrium, this type is called keto-enol tautomerism.For keto-enol tautomerism, there should be an alpha hydrogen atom in the carbonyl compound.
Impure spectrum.
Answer:- Impure spectrum is a spectrum in which the constituent colours overlap each other.
What is SP3 hybridisation ?
Answer:- When all the four orbitals of L-shell (2S,2Px,2Py,2Pz) get mixed up, four SP3 hybrid orbitals result.They are exactly similar in shape and are directed to the four corners of regular tetrahedron.The bond angle in it is 109⁰28'.Each SP3 orbital has 25% S-character and 75% P-character.
