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प्रश्न
Which non-metal has been placed in the reactivity series of metals?
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उत्तर
Hydrogen is the non-metal that has been placed in the reactivity series of metals because it loses electrons to form positive ions (H+) like metals.
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संबंधित प्रश्न
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the electron-dot structures for sodium, oxygen and magnesium.
A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?
Explain why, the surface of some metals acquires a dull appearance when exposed to air for a long time.
With the help of examples, describe how metal oxides differ from non-metal oxides.
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place
Why is white phosphorus kept immersed under water?
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What special name is given to substances like aluminium oxide.
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 Aluminium with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Name one metal which displaces silver from silver nitrate solution and one which does not.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
The elements whose oxides can turn litmus solution red are:
(a) lithium and sodium
(b) copper and potassium
(c) carbon and hydrogen
(d) phosphorus and sulphur
In a solution of lead acetate, a strip of metal M was dipped. After some time, lead from the solution was deposited on the metal strip. Which metal is more reactive, M or lead?
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?
