Identify the binary mixture$(s)$ that can be separated into individual compounds by differential extraction,as shown in the given scheme.
$(A)$ $C_6H_5OH$ and $C_6H_5COOH$
$(B)$ $C_6H_5COOH$ and $C_6H_5CH_2OH$
$(C)$ $C_6H_5CH_2OH$ and $C_6H_5OH$
$(D)$ $C_6H_5CH_2OH$ and $C_6H_5CH_2COOH$

Match List-$I$ with List-$II$.

List-$I$ Element detected	List-$II$ Reagent used/Product formed
$A$. Nitrogen	$I$. $Na_2[Fe(CN)_5NO]$
$B$. Sulphur	$II$. $AgNO_3$
$C$. Phosphorus	$III$. $Fe_4[Fe(CN)_6]_3$
$D$. Halogen	$IV$. $(NH_4)_2MoO_4$

Choose the correct answer from the options given below:

The copper wire test for halogens is known as:

Which of the following compounds will not give a positive Lassaigne's test for nitrogen?

The volume of nitrogen is measured by which apparatus in the Dumas method?

Given below are two statements :
Statement $I$ : In Lassaigne's Test,when both nitrogen and sulphur are present in an organic compound,sodium thiocyanate is formed.
Statement $II$ : If both nitrogen and sulphur are present in an organic compound,then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give $NaCN$ and $Na_{2}S$.
In the light of the above statements,choose the most appropriate answer from the options given below.