What are $X$ and $Y$ in the following reaction?
$CF_2Cl_2 \xrightarrow{UV} X + Y$
$CF_2Cl_2 \xrightarrow{UV} X + Y$
- A$\cdot CF_2Cl, \cdot Cl$
- B$^{-}C_2F_4, Cl_2$
- C$\cdot CFCl_2, \cdot F$
- D$CCl_2, F_2$
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| $B$. The equation of the tangent at $(9, -5)$ on $C$ | $II$. $x = 1$ |
| $C$. The equation of the normal at $(-7, -5)$ on $C$ | $III$. $3x + 8y = 27$ |
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