Question

Which of the following is not a characteristic of $H_{2}S{O}_4$?

• A. Reducing agent
• B. Oxidising agent
• C. Sulphonating agent
• D. Highly viscous

Answer 1

The correct option is A Reducing agent

$S$ in $H_{2}S{O}_4$ is in $+6$ oxidation state. So it can act as oxidising agent because $S$ can also exist in $+4,+2,0,-2$ oxidation state.

With organic compounds, it acts as a sulfonating agent and results in an addition of $S{O}_2$ to compound. $H_{2}S{O}_4$ has hydrogen bonding due to which it is highly viscous.

Sulphuric acid does undergo oxidation thus it does not act as a reducing agent.

So, the correct option is $A$