question_answer

'X? reacts with oxygen to form a compound 'Y? 'Y' on reaction with water forms a new substances 'Z' that turns blue litmus red. Identify X, Y and Z respectively. (a) Metal, metallic oxide, base               (b) Non-metal, non-metallic oxide, acid (c) Metal, metallic oxide, neutral solution    (d) Metalloid, metalloid oxide, neutral solution   

Answer:

?Z? that turns blue litmus red\[\Rightarrow \]Acidic solution \[\Rightarrow \]Z = Acid \[Y+Water\to Acid\](Z) \[\Rightarrow \]Y = Non metallic oxide \[X+Oxygen\to Non\text{ }metallic\text{ }oxide\](Y) \[\Rightarrow \]\[X=Non\text{ }metal\]