Advertisements
Advertisements
Question
How would you show that silver is chemically less reactive than copper?
Solution
When silver is dipped in a copper sulphate solution, no reaction occurs. This means silver cannot displace copper from the copper sulphate solution. Hence, it shows that silver is chemically less reactive than copper.
APPEARS IN
RELATED QUESTIONS
Write the electron-dot structures for sodium, oxygen and magnesium.
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
Why is white phosphorus kept immersed under water?
Can we keep sodium immersed under water? Why?
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
An element X forms two oxides XO and XO2. The oxide XO has no action on litmus solution but oxide XO2 turns litmus solution red.
(a) What is the nature of oxide XO?
(b) What is the nature of oxide XO2?
(c) Would you call element X a metal or a non-metal? Give reason for your choice.
(d) Can you give an example of element like X?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Tungsten wire is used in electric bulbs.
Why is acidified water considered to be a good conductor of electricity?
