Why is benzene extra ordinarily stable though it contains three double bonds?

Which one of the following polymers molecules contain more double bonds in the polymer chain in the repeating unint.

Tautomerism is due to spontaneous interconversion of two isomeric forms with differentfunctional groups into each other. The term tautomer means constitutional isomers thatundergo such rapid inter conversion that they cannot be independently isolated. In keto-enol tautomerism although Keto form in general is more stable, but some factors like H-bonding and extended double bonds conjugation may increase the stability of enol form Which of the following statements are correct of the following

Why are bonding molecular orbitals more stable than anti bonding molecular orbitals?

In benzene molecule there are three pi bonds and

Tautomerism is due to spontaneous interconversion of two isomeric forms with differentfunctional groups into each other. The term tautomer means constitutional isomers thatundergo such rapid inter conversion that they cannot be independently isolated. In keto-enol tautomerism although Keto form in general is more stable, but some factors like H-bonding and extended double bonds conjugation may increase the stability of enol form Enolic form of acetyl acelone is stabilized due to (I) resonance as a result of conjugation (II) intra molecular H-bonding (III) dipole- dipole repulsion

Give reason why H_(2) , ions are more stable than H_(2) though have the same bond order.

Why the bile juice is considered important even though it does not contain any digestive enzymes ?

(A) : Alkene is more reactive than the corresponding alkane (R ) : Alkenes contain carbon-carbon double bond

Mesomerism is extended resonance. Atoms or groups with lone pairs of electrons release electrons when connected to doubly bonded carbons. It is +M effect. Unsaturated groups when connected to doubly bonded carbons withdraw pi electrons from the doubly bonded carbons. It is -M effect. Here the double bond is the unsaturated group should be between less electronegative atom and more electronegative atom. Which of the following is most stable?

IUPAC name of the alkene which contains three C-C, eight C-H sigma bonds are one C-C pi bond and gives two moles of an aldehyde of molar mass 44u on ozonolysis