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प्रश्न
Name the metal which has been placed at the bottom of the reactivity series.
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उत्तर
Gold (Au)
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the chemical reaction when iron reacts with dilute H2SO4.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be ______.
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
How do non-metals react with hydrogen? Explain with an example.
Why does aluminium not react with water under ordinary conditions?
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the equation for the reaction of:
Aluminium with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
Write the equation for the reaction of:
Iron with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
What is meant by the reactivity series of metals?
The elements whose oxides can turn phenolphthalein solution pink are ______.
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.
Which of the following reactions will not occur? Why not?
- \[\ce{MgSO4_{(aq)} + Cu_{(s)} -> CuSO4_{(aq)} + Mg_{(s)}}\]
- \[\ce{CuSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Cu_{(s)}}\]
- \[\ce{MgSO4_{(aq)} + Fe_{(s)} -> FeSO4_{(aq)} + Mg_{(s)}}\]
What is the cause of chemical bonding (or chemical combination) of atoms of elements?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Why is acidified water considered to be a good conductor of electricity?
