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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
A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green
Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Name the following:
Metals which forms an amphoteric oxide.
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Name the metal which has been placed at the top of the reactivity series.
Write equation for the reaction of magnesium with oxygen.
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
With the help of examples, describe how metal oxides differ from non-metal oxides.
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
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Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
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
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(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
Write the chemical equation of the above process.
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