MCQ
Choose the polar molecule from the following :
- A$\mathrm{CCl}_4$
- B$\mathrm{CO}_2$
- C$\mathrm{CH}_2=\mathrm{CH}_2$
- ✓$\mathrm{CHCl}_3$
$\mu \neq 0$
$\mathrm{CHCl}_3$ is polar molecule and rest all molecules are non-polar.
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$(A)$ The $pH$ of $1 \times 10^{-8}\,M\,HCl$ solution is $8$.
$(B)$ The conjugate base $H _2 PO _4^{-}$is $HPO _4{ }^{2-}$.
$(C)$ $K _{ w }$ increases with increase in temperature.
$(D)$ When a solution of weak monoprotic acid is titrated against a strong base at half neutralisation point, $pH =\frac{1}{2} pK _{ a }$
Choose the correct answer from the option given below.
