EASY
10th CBSE
IMPORTANT
Earn 100

Can we place silver nitrate solution in an iron vessel? Why or why not?

Important Questions on Chemical Reactions And Equations

MEDIUM
10th CBSE
IMPORTANT
What is the relationship between combination and decomposition reactions? Write an equation for each type.
EASY
10th CBSE
IMPORTANT
Can oxidation or reduction take place alone? Why or why not? What are such reactions called?
EASY
10th CBSE
IMPORTANT
A white salt of Pb (lead) on heating decomposes to give brown fumes and a yellow residue is left behind. Name the salt and write the decomposition reaction.
EASY
10th CBSE
IMPORTANT
Why is burning of coal considered a chemical change?
MEDIUM
10th CBSE
IMPORTANT

In the following situation, a reaction may or may not take place. If it does, write the balanced molecular, total ionic and net ionic equations illustrating the reaction. Assume the reaction takes place in aqueous solutions.

  • Some iron nails are placed in CuCl2 solution.
EASY
10th CBSE
IMPORTANT

In the following situation, a reaction may or may not take place. If it does, write the balanced molecular, total ionic and net ionic equations illustrating the reaction. Assume the reaction takes place in aqueous solutions.

  • Some coins are dropped in hydrochloric acid solution.
MEDIUM
10th CBSE
IMPORTANT

In the following situation, a reaction may or may not take place. If it does, write the balanced molecular, total ionic and net ionic equations illustrating the reaction. Assume the reaction takes place in aqueous solutions.

  • A copper wire is placed in PbNO32 solution.
MEDIUM
10th CBSE
IMPORTANT
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.