Advertisements
Advertisements
प्रश्न
Give reason for the following:
Blue colour of copper sulphate solution is destroyed when iron filings are added to it.
Advertisements
उत्तर
When iron fillings are added to copper sulphate solution, iron will displace copper to form iron sulphate. The blue colour of the copper sulphate solution changes to green as iron sulphate is green in colour.
APPEARS IN
संबंधित प्रश्न
Write equations for the reactions of calcium and potassium with water.
Show the formation of Na2O by the transfer of electrons.
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?
Name the metal which has been placed at the bottom of the reactivity series.
Write equation for the reaction of sodium with oxygen.
Complete and balance the following equation:
Cu (NO3)2 (aq) + Zn(s) →
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
A copper plate was dipped in AgNO3 solution. After certain time, silver from the solution was deposited on the copper plate. State the reason why it happened. Give the chemical equation of the reaction involved.
What is the action of water on magnesium ? Write equation of the chemical reaction involved.
Hydrogen is not a metal but still it has been assigned a place in the reactivity series of metals. Why?
An acidic oxide is produced by the element:
(a) Na
(b) C
(c) Ca
(d) H
You are given a solution of AgNO3. Which of the following do you think cannot displace Ag from AgNO3solution?
(a) Magnesium
(b) Zinc
(c) Gold
(d) Copper
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
In nature, metal A is found in a free state while metal B is found in the form of its compounds. Which of these two will be nearer to the top of the activity series of metals?
Name a metal which does not react with cold as well as hot water but reacts with steam.
The substance that will be flattened on beating with a hammer is ______.
