Advertisements
Advertisements
प्रश्न
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)?
विकल्प
H2SO4
HCl
HNO3
All of these
उत्तर
HNO3
Explanation -
Out of the given options, only nitric acid when reacting with metals does not give hydrogen gas instead nitric acid is a very strong oxidising agent and it oxidises the hydrogen gas formed to water and thus hydrogen gas is not evolved.
APPEARS IN
संबंधित प्रश्न
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?
Complete and balance the following equation:
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Why does aluminium not react with water under ordinary conditions?
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
(a) MgSO4 + Fe
(b) ZnSO4 + Fe
(c) MgSO4 + Pb
(d) CuSO4 + Fe
Write the chemical equation of the above process.
Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example.