Q1: Which one is neutral in character ?

ANS:B - N₂O

Among the options provided, N2​O (nitrous oxide) is neutral in character. Nitrous oxide (N2​O) is a neutral oxide because it is formed by the combination of nitrogen and oxygen in a 1:1 ratio. In this compound, the oxidation state of nitrogen is +1+1 and that of oxygen is −2−2, resulting in a neutral overall charge. Therefore, nitrous oxide does not exhibit acidic or basic properties and is considered to be neutral.