Millionaire Mode

Metallurgy - Principles and Processes - Class XII

Question 1 of 83

Hardened steel on heating in the range of $220^{\circ} C$ to $330^{\circ}C$ and on slow cooling gives :

  1. hard steel
  2. Brittle steel
  3. hard and brittle steel
  4. hard and tough steel

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