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प्रश्न
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
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उत्तर
Hydrogen is not a metal but it has been assigned a place in the reactivity series of metals because like metals, it also loses electrons and forms positive ions, H+.
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संबंधित प्रश्न
The reaction of an iron nail with copper sulphate solution is ........... reaction.
(a) Combination
(b) Displacement
(c) Double displacement
(d) Decomposition
What name is given to those metal oxides which show basic as well as acidic behaviour?
Give reason for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
How do non-metals react with hydrogen? Explain with an example.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
What special name is given to substances like aluminium oxide.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with eater.
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Write the equation for the reaction of Magnesium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
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.
Name one metal which displaces copper from copper sulphate solution and one which does not.
A basic oxide will be formed by the element:
(a) K
(b) S
(c) P
(d) Kr
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
Name a metal which It does not react with any physical state of water?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Answer the following question:
An element X on reacting with oxygen forms an oxide X2O. This oxide dissolves in water and turns red litmus blue. State whether element X is metal or a non - metal. Explain with a proper example.
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
Write the chemical equation for the following reaction:
Cinnabar is heated in the presence of air.
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
