Millionaire Mode

Chemical Reactions

Question 1 of 10

When iron nails are placed in blue coloured solution of copper sulphate, the solution turns green. Which type of chemical reaction does it represent?

  1. Decomposition
  2. Displacement
  3. Combination
  4. Oxidation

Prize Money

15₹7 Crores
14₹1 Crore
13₹50,00,000
12₹25,00,000
11₹12,50,000
10₹6,40,000
9₹3,20,000
8₹1,60,000
7₹80,000
6₹40,000
5₹20,000
4₹10,000
3₹5,000
2₹2,000
1₹1,000