Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
|
List - $I$ Compound |
List - $II$ Use |
| $(A)$ Carbon tetrachloride | $(I)$ Paint remover |
| $(B)$ Methylene chloride | $(II)$ Refrigerators and air conditioners |
| $(C)$ DDT | $(III)$ Fire extinguisher |
| $(D)$ Freons | $(IV)$ Non Biodegradable insecticide |
Choose the correct answer from the options given below:
| Rate Constant | Activation energy | |
| Step $1$ | $k_1$ | $E_{a_1} = 180\ kJ/mol$ |
| Step $2$ | $k_2$ | $E_{a_2} = 80\ kJ/mol$ |
| Step $3$ | $k_3$ |
$E_{a_3} = 50\ kJ/mol$ |
$Z{n^{2 + }} + 2{e^ - } \to Zn$ ; $E = - 7.62\,\,V,$
$F{e^{2 + }} + 2{e^ - } \to Fe$ ; $E = - 7.81\,\,V$
The emf of the cell $F{e^{2 + }} + Zn \to Z{n^{2 + }} + Fe$ is ............ $\mathrm{V}$