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प्रश्न
Out of aluminium, copper, calcium and tin, the most reactive metal is:
विकल्प
aluminium
copper
tin
calcium
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उत्तर
Calcium
Explanation:
Calcium is the most reactive because it belongs to the alkaline earth metals group and occupies the highest position in the reactivity series among the given choices, meaning it loses electrons much more readily than aluminium, tin, and copper.
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संबंधित प्रश्न
A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Name the following:
Metals which forms an amphoteric oxide.
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
Which of the two metals is more reactive?
Copper or silver
Write an equation for the reaction of:
Sodium with oxygen
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
With the help of examples, describe how metal oxides differ from non-metal oxides.
How do metals react with hydrogen? Explain with an example.
Why is white phosphorus kept immersed under water?
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Name one metal more reactive than hydrogen.
Metal A burns in air, on heating, to form an oxide A2O3 whereas another metal B burns in air only on strong heating to form an oxide BO. The two oxides A2O3 and BO can react with hydrochloric acid as well as sodium hydroxide solution to form the corresponding salts and water.
- What is the nature of oxide A2O3?
- What is the nature of oxide BO?
- Name one metal like A.
- Name one metal like B.
\[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]
\[\ce{FeSO4_{(aq)} + Zn_{(s)} -> ZnSO4_{(aq)} + Fe_{(s)}}\]
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
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.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
