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प्रश्न
Name the metal which has been placed just below copper in the reactivity series.
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उत्तर
Mercury is the metal that has been placed just below copper in the reactivity series.
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संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Write equations for the reactions of iron with steam.
Write equations for the reactions of calcium and potassium with water.
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
Write equation for the reaction of sodium with oxygen.
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
How do metals react with hydrogen? Explain with an example.
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
Why does aluminium not react with water under ordinary conditions?
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium
Which non-metal has been placed in the reactivity series of metals?
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
The metals which can produce amphoteric oxides are:
(a) sodium and aluminium
(b) zinc and potassium
(c) calcium and sodium
(d) aluminium and zinc
An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Find the odd one out:
