Question 7 - MCQs from NCERT Exemplar - Chapter 3 Class 10 - Metals and Non-Metals

Last updated at April 16, 2024 by

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. 

reaction between Nitric acid and water - Teachoo.png

So, the correct answer is (c) HNO 3

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo