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Show the formation of Na2O by the transfer of electrons. - Science

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Show the formation of Na2O by the transfer of electrons.

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अध्याय 3: Metals and Non-metals - Intext Questions [पृष्ठ ४९]

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एनसीईआरटी Science [English] Class 10
अध्याय 3 Metals and Non-metals
Intext Questions | Q 1.2 | पृष्ठ ४९

संबंधित प्रश्न

_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3


Write equations for the reactions of calcium and potassium with water.


Food cans are coated with tin and not with zinc because ______.


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


Name two metals which form amphoteric oxides.


Name the metal which has been placed at the bottom of the reactivity series.


What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?


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


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.


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 happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.


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


Name another metal oxide which behaves like aluminium oxide.


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


An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus


The elements whose oxides can turn litmus solution red are:
(a) lithium and sodium
(b) copper and potassium
(c) carbon and hydrogen
(d) phosphorus and sulphur


Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

  1. Good thermal conductivity
  2. Good electrical conductivity
  3. Ductility
  4.  High melting point

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