Millionaire Mode

Acids, Bases and Salts - 1 (Class - IX)

Question 1 of 15

Metal oxides that show basic as well as acidic behaviour are called amphoteric oxides. Oxides of which of the following elements are amphoteric?

a. Aluminium
b. Zinc
c. Copper

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c

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