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प्रश्न
Why is white phosphorus kept immersed under water?
उत्तर
White phosphorus is kept immersed in water because it starts burning spontaneously when it comes into contact with air. But it does not react with water.
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संबंधित प्रश्न
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Give reason for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Name one metal more reactive and another less reactive than hydrogen.
Zinc oxide is a metal oxide. Which of the following term best describes the nature of zinc oxide:
(a) an acidic oxide
(b) a basic oxide
(c) an amphoteric oxide
(d) a neutral oxide
Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
(a) Zn
(b) Ag
(c) Cu
(d) Mg
Name a metal which does not react with cold as well as hot water but reacts with steam.
Write the chemical equation of the above process.
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Metals are generally solid. Which of the following metals is in the liquid state at room temperature?
