Freons are chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs), which are hydrocarbons where some or all of the hydrogen atoms have been replaced by chlorine and fluorine atoms.
Among the given options, only \( \text{C}_2\text{Cl}_2\text{F}_2 \) (dichlorodifluoroethylene) contains both chlorine and fluorine along with carbon, making it a Freon.
\( \text{C}_2\text{Cl}_2\text{F}_2 \) is an example of a Freon.
If all the words with or without meaning made using all the letters of the word "KANPUR" are arranged as in a dictionary, then the word at 440th position in this arrangement is:
If the system of equations \[ x + 2y - 3z = 2, \quad 2x + \lambda y + 5z = 5, \quad 14x + 3y + \mu z = 33 \] has infinitely many solutions, then \( \lambda + \mu \) is equal to:}
The equilibrium constant for decomposition of $ H_2O $ (g) $ H_2O(g) \rightleftharpoons H_2(g) + \frac{1}{2} O_2(g) \quad (\Delta G^\circ = 92.34 \, \text{kJ mol}^{-1}) $ is $ 8.0 \times 10^{-3} $ at 2300 K and total pressure at equilibrium is 1 bar. Under this condition, the degree of dissociation ($ \alpha $) of water is _____ $\times 10^{-2}$ (nearest integer value). [Assume $ \alpha $ is negligible with respect to 1]