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प्रश्न
Show the formation of Na2O by the transfer of electrons.
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उत्तर
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संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
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).
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
Why are metals called electropositive elements whereas non-metals are called electronegative elements?
State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.
What will happen if a strip of copper is kept immersed in a solution of silver nitrate (AgNO3)?
Name two metals which can, however, liberate hydrogen gas from very dilute nitric acid.
Why is white phosphorus kept immersed under water?
What is the action of water on sodium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Aluminium 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?
The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
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
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
Write the chemical equation for the following reaction:
Manganese dioxide is heated with aluminum powder.
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
(i) Good thermal conductivity
(ii) Good electrical conductivity
(iii) Ductility
(iv) High melting point
Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?
- Good thermal conductivity
- Good electrical conductivity
- Ductility
- High melting point
