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प्रश्न
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
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उत्तर
Calcium is a less reactive metal than sodium.
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संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
What would you observe when zinc is added to a solution of iron (II) sulphate? Write the chemical reaction that takes place.
A solution of _________________ in water is green in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
Name the metal which has been placed just below copper in the reactivity series.
How would you show that silver is chemically less reactive than copper?
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.
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 aluminium ? Write equation of the chemical reaction involved.
Write the equation for the reaction of Zinc 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
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
FeSO4(aq) + Zn(s) → ZnSO4(aq) + Fe(s)
On the basis of the above reactions, indicate which is most reactive and which is least reactive metal out of zinc, copper and iron.
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
Write a chemical equation to illustrate the use of aluminium for joining cracked railway lines.
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Which of the following property is not responsible for copper to be used as electrical conduction wires?
