NEET 2019 P1 Question Paper - PYQ Mock Test

The number of sigma ($\sigma$) and pi ($\pi$) bonds in pent-2-en-4-yne is:

The structure of intermediate $A$ in the following reaction is:

The correct structure of tribromooctaoxide is:

$4d,5p,5f$ and $6p$ orbitals are arranged in the order of decreasing energy. The correct option is:

Which of the following reactions are disproportionation reaction?(a) $2{\text{Cu}}^{+}\to {\text{Cu}}^{2+}+{\text{Cu}}^0$ (b) $3{\text{MnO}}_4^{2-}+4{\text{H}}^{+}\to 2{\text{MnO}}_4^{-}+{\text{MnO}}_2+2{\text{H}}_2\text{O}$ (c) $2{\text{KMnO}}_4\stackrel{\Delta }{\to }{\text{K}}_2{\text{MnO}}_4+{\text{MnO}}_2+{\text{O}}_2$ (d) $2{\text{MnO}}_4^{-}+3{\text{Mn}}^{2+}+2{\text{H}}_2\text{O}\to 5{\text{MnO}}_2+4{\text{H}}^{+}$ Select the correct option from the following: