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प्रश्न
Which non-metal has been placed in the reactivity series of metals?
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उत्तर
Hydrogen
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संबंधित प्रश्न
A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Food cans are coated with tin and not with zinc because ______.
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Name the metal which has been placed just below copper in the reactivity series.
Complete and balance the following equation:
\[\ce{Na2O + H2O ->}\]
Ordinary aluminium strips are not attacked by water because of the presence of a layer of ______ on the surface of aluminium.
Can we keep sodium immersed under water? Why?
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
Name one metal which displaces copper from copper sulphate solution.
A basic oxide will be formed by the element ______.
Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
(a) Zn
(b) Ag
(c) Cu
(d) Mg
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
Why is acidified water considered to be a good conductor of electricity?
