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प्रश्न
What name is given to those metal oxides which show basic as well as acidic behaviour?
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उत्तर
Metal oxides that show basic as well as acidic behaviour are called amphoteric oxides. Aluminium oxide is an example.
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संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Name the metal which has been placed at the bottom of the reactivity series.
What will happen if a strip of zinc is immersed in a solution of copper sulphate?
Give reason for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
With the help of examples, describe how metal oxides differ from non-metal oxides.
Can we keep sodium immersed under water? Why?
Write the equation for the reaction of Aluminium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
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.
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
Which one among the following is an acidic oxide?
The substance that will be flattened on beating with a hammer is ______.
