Which of the following tests is used for the detection of glucose?

Define oxidising agents. Explain its role in the oxidation of alcohols to acids. Write the oxidation reaction of ethanol.

Ethanol reacts with sodium and forms two products. These are:

State the valency of each carbon atom in $(i)$ an alkane and $(ii)$ an alkyne.

$A$ compound $X$ is formed by the reaction of a carboxylic acid $C_{2}H_{4}O_{2}$ and an alcohol in the presence of a few drops of $H_{2}SO_{4}$. The alcohol,upon oxidation with alkaline $KMnO_{4}$ followed by acidification,gives the same carboxylic acid as used in this reaction. Give the names and structures of $(a)$ carboxylic acid,$(b)$ alcohol,and $(c)$ the compound $X$. Also,write the chemical reaction.

Which of the following is the correct representation of the electron dot structure of nitrogen $(N_2)$?