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प्रश्न
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
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उत्तर
Sodium > Calcium > Magnesium > Zinc > Iron > Lead > Copper
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संबंधित प्रश्न
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
What name is given to those metal oxides which show basic as well as acidic behaviour?
Fill in the following blank with suitable word:
Ordinary aluminium strips are not attacked by water because of the presence of a layer of ................. on the surface of aluminium.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Name another metal oxide which behaves like aluminium oxide.
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?
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
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
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
Calcium floats over water during the reaction with water. Give reason.
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
The substance that will be flattened on beating with a hammer is ______.
