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).
Let one focus of the hyperbola $ \frac{x^2}{a^2} - \frac{y^2}{b^2} = 1 $ be at $ (\sqrt{10}, 0) $, and the corresponding directrix be $ x = \frac{\sqrt{10}}{2} $. If $ e $ and $ l $ are the eccentricity and the latus rectum respectively, then $ 9(e^2 + l) $ is equal to:
The largest $ n \in \mathbb{N} $ such that $ 3^n $ divides 50! is: