The reaction shown in the image is:

Identify $A$ in the given chemical reaction:

In which of the following reactions is the product $NOT$ correct?

What is formed when carbon monoxide reacts with $Cl_2$ in the presence of sunlight?

Which of the following compounds does not give the iodoform test?

In the reaction sequence: $CH_2OH-CHOH-CH_2OH$ $\xrightarrow{KHSO_4/\Delta} (X)$ $\xrightarrow{(C_2H_5O)_3Al/\Delta} (Y)$,$(Y)$ will be: