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प्रश्न
Name one metal more reactive than hydrogen.
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उत्तर
Zinc
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संबंधित प्रश्न
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Write an equation for the reaction of:
Sodium with oxygen
How would you show that silver is chemically less reactive than copper?
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
Name another metal oxide which behaves like aluminium oxide.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.
Write the equation for the reaction of:
Magnesium with dilute hydrochloric acid.
Name the products formed in the given case. Also indicate the physical states of all the substances involved.
A basic oxide will be formed by the element ______.
Out of aluminium, copper, calcium and tin, the most reactive metal is:
(a) aluminium
(b) copper
(c) tin
(d) calcium
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
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
An element E forms an oxide E2O. An aqueous solution of E2O turns red litmus paper blue.
(a) What is the nature of the oxide E2O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
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.
When calcium metal is added to water, the gas evolved does not catch fire but the same gas evolved on adding sodium metal to water catches fire. Why is it so?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
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
