Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas when reacting with metals (except Mn and Mg)?

(A) H 2 SO 4

(B) HCl

(C) HNO 3

(D) All of these

 

Answer

When metals react with HNO 3 , H 2 is not liberated.

This is because HNO 3  is a strong oxidising agent . So, as soon as the hydrogen gas is formed, it is oxidised to water. 

So, the correct answer is (c) HNO 3

  1. Class 10
  2. Chapter 3 Class 10 - Metals and Non-Metals (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo