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प्रश्न
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
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उत्तर
When metals react with oxygen, basic oxides are formed. For example, sodium on reacting with oxygen form sodium oxide. This oxide turns red litmus solution to blue, which shows that it is a basic oxide.
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संबंधित प्रश्न
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:
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
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?
Name the metal which has been placed at the top of the reactivity series.
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.
What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
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.
Which non-metal has been placed in the reactivity series of metals?
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
