DDT (dichlorodiphenyltrichloroethane) and Aldrin are well-known pesticides.
PAN (peroxyacetyl nitrate) is a component of photochemical smog.
Sodium chlorate is a herbicide and defoliant.
Sodium arsinite has been used as an insecticide and rodenticide.
Tetrachloroethene is used in dry cleaning.
Therefore, the correct group of chemicals used as pesticides is DDT and Aldrin.
Calculate the potential for half-cell containing 0.01 M K\(_2\)Cr\(_2\)O\(_7\)(aq), 0.01 M Cr\(^{3+}\)(aq), and 1.0 x 10\(^{-4}\) M H\(^+\)(aq).

Which one of the following graphs accurately represents the plot of partial pressure of CS₂ vs its mole fraction in a mixture of acetone and CS₂ at constant temperature?

Let \( \alpha = \dfrac{-1 + i\sqrt{3}}{2} \) and \( \beta = \dfrac{-1 - i\sqrt{3}}{2} \), where \( i = \sqrt{-1} \). If
\[ (7 - 7\alpha + 9\beta)^{20} + (9 + 7\alpha - 7\beta)^{20} + (-7 + 9\alpha + 7\beta)^{20} + (14 + 7\alpha + 7\beta)^{20} = m^{10}, \] then the value of \( m \) is ___________.