Which of the following is an odd pollutant?

Wind pollination is common in . . . . . . .

$A$ man is admitted to a hospital. He is suffering from an abnormally low body temperature,loss of appetite,and extreme thirst. His brain scan would probably show a tumour in

For the circuit shown below,the Boolean polynomial is:

In a $\triangle ABC$,if $3a = b + c$,then $\cot \frac{B}{2} \cot \frac{C}{2}$ is equal to :

What are $X$ and $Y$ in the following reaction sequence?
$C_2H_5OH$ $\xrightarrow{Cl_2} \underline{X}$ $\xrightarrow{Cl_2} \underline{Y}$