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Can We Keep Sodium Immersed Under Water? Why?

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प्रश्न

Can we keep sodium immersed under water? Why?

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उत्तर

 No, we cannot keep sodium immersed in water because it reacts vigorously even with cold water to form sodium hydroxide, hydrogen gas and a huge amount of heat.

 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) + HEAT

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अध्याय 3: Metals and Non-metals - Exercise 1 [पृष्ठ १३४]

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लखमीर सिंग Chemistry [English] Class 10
अध्याय 3 Metals and Non-metals
Exercise 1 | Q 51.3 | पृष्ठ १३४

संबंधित प्रश्न

A solution of CuSO4 in water is .................... in colour.
(a) Pink
(b) Blue
(c) Colourless
(d) Green


Write equations for the reactions of iron with steam. 


A solution of _________________ in water is green in colour.

(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


Why are metals called electropositive elements whereas non-metals are called electronegative elements?


How would you show that silver is chemically less reactive than copper?


What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.


Name two metals which cannot displace hydrogen from dilute acids.


What is the action of water on magnesium ? Write equation of the chemical reaction involved.


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.


What is meant by the reactivity series of metals? Arrange the following metals in an increasing order of their reactivities towards water:
Zinc, Iron, Magnesium, Sodium


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


A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury


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


What is the cause of chemical bonding (or chemical combination) of atoms of elements?


Choose the correct alternative and rewrite the following:

Which of the following is lue in colour?


Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.


Which one among the following is an acidic oxide?


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