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प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
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उत्तर
When dilute hydrochloric acid is added to a reactive metal, hydrogen gas is produced.
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संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
What name is given to those metal oxides which show basic as well as acidic behaviour?
Complete and balance the following equation:
\[\ce{Na2O + H2O ->}\]
Which of the following elements would yield a neutral oxide?
Na, S, C, K, H
How do non-metals react with hydrogen? Explain with an example.
Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Write the equation for the reaction of Iron with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury
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.
(a) What is the nature of oxide A2O3?
(b) What is the nature of oxide BO?
(c) Name one metal like A.
(b) Name one metal like B.
What is the characteristic of the electronic configuration of noble gases?
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
