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

Option: 1

H2SO4


Option: 2

HCl


Option: 3

HNO3


Option: 4

All of these


Answers (1)

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Classification of Elements as Metals, Nonmetals and Metalloids -

The elements can be divided into three categories i.e, metals and non-metals and metalloids. Metals comprise more than 78% of all known elements and appear on the left side of the Periodic Table. Metals are usually solids at room temperature except mercury which is liquid at room temperature and even gallium and caesium also have very low melting points (303K and 302K. respectively). Metals usually have high melting and boiling points. They are good conductors of heat and electricity. They are malleable and ductile .

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Nitric acid(HNO3) is a strong oxidising agent. The Hydrogen gas produced during its reaction with metal gets oxidised to H2O, hence no hydrogen gas is produced. 

Correct option is (3)

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