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प्रश्न
Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg
| More reactive | Moderately reactive | Less reactive |
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उत्तर
| More reactive | Moderately reactive | Less reactive |
| Ca | Zn | Cu |
| Na | Mg | Hg |
| Li | Fe |
APPEARS IN
संबंधित प्रश्न
Give one example each of which illustrates the following characteristics of a chemical reaction:
evolution of a gas
What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?
Fill in the blank
When a piece of copper is added to silver nitrate solution, it turns ............in colour.
How will you obtain Silver chloride from silver nitrate.
Also give balanced equations for the reactions
Write a chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
Write chemical equation for the event.
Electrolysis of alumina is done.
Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.
Give a balanced equation for the reversible catalytic reaction involving nitrogen as one of the reactants.
Select the correct answer for the statement given below:
A neutral oxide which does not react with an acid or a base to give salt and water.
Complete the statement by filling in the blank with the correct word:
The metal which reacts with steam and the reaction is reversible is ________.
Give a balanced equation for the following type of reaction:
A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.
Explain the following reaction with the balanced equation.
Sulphur burns in air
Observe the following diagram and identify the type of reaction and write observation.
A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air. Identify the metal and its ore and give the reaction involved.
A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.
A solution of CuSO4 was kept in an iron pot. After few days the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
Metal ‘A’ has electronic configuration 2, 8, 1 and metal ‘B’ has electronic configuration 2, 8, 8, 2. Out of these, which metal is more reactive? Write the reaction of this metal with dilute HCl acid.
