The number of sigma and pi bonds in buta-1,3-diene, $\mathrm{CH}{}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}{}_2$, is respectively:

More questions on Conjugated dienes and Diels-Alder reaction

• Isoprene reacts with methyl acrylate (CH2=CH-CO2CH3) in a Diels-Alder reaction. Assume the major product is the 'para' (1,4) regioisomer, in... JEE Advanced level
• Cyclohexa-1,3-diene reacts with one equivalent of HBr. The 1,2-adduct and the 1,4-adduct are best described as JEE Advanced level
• Buta-1,3-diene is heated with ethene to form a cyclic hydrocarbon Y. Y is oxidised with hot concentrated KMnO4 followed by acidification. Th... JEE Advanced level
• Which of the following is a conjugated diene? NEET level
• The Diels-Alder reaction between a conjugated diene and an alkene is classified as a: NEET level
• One mole of HBr adds to buta-1,3-diene at -80 degC (kinetic control). The major product is: NEET level