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प्रश्न
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
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उत्तर
When non-metals react with oxygen, acidic oxides are formed. For example, sulphur on reacting with oxygen form sulphur dioxide. This oxide turns blue litmus solution to red, which shows that it is an acidic oxide.
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संबंधित प्रश्न
.................... liberated when acetic acid reacts with sodium metal.
(a) Hydrogen
(b) Chlorine
(c) Oxygen
(d) Nitrogen
Why is sodium kept immersed in kerosene oil?
The solution of Aluminium sulphate in water is .....................
(a) Green
(b) Colourless
(c) Pink
(d) Blue
From amongst the metals sodium, calcium aluminium, copper and magnesium, name the metal:
(i) which reacts with water only on boiling, and
(ii) another which does not react even with steam.
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
Complete and balance the following equation:
Na + O2 →
Complete and balance the following equation:
Complete and balance the following equation:
Cu (NO3)2 (aq) + Zn(s) →
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.
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
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(a) Mg
(b) S
(c) P
(d) Na
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FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
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Choose the correct alternative and rewrite the following:
Which of the following is lue in colour?
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.
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.
Tungsten wire is used in electric bulbs.
