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प्रश्न
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
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उत्तर
\[\ce{\underset{oxide}{\underset{Iron (III)}{Fe2O3_{(s)}}} + \underset{Aluminium}{2Al_{(s)}} -> \underset{Iron}{2Fe_{(l)}} + \underset{oxide}{\underset{Aluminium}{Al2O3_{(s)}}} + Heat}\]
संबंधित प्रश्न
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:
What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
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.
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
What are noble gases
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Which one among the following is an acidic oxide?
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
