Lakshya Education MCQs

Question: Free carbon in iron makes the metal
Options:
A. Soft and gives a coarse grained crystalline structure
B. Soft and gives a fine grained crystalline structure
C. Hard and gives a coarse grained crystalline structure
D. Hard and gives a fine grained crystalline structure
Answer: Option A
Explanation :

Submit Answer & Explaination

Earn Reward Points by submitting Detailed Explaination for this Question

More Questions on This Topic :

Question 1. German silver contains
  1.     1% silver
  2.     2% silver
  3.     5% silver
  4.     No silver
Answer: Option D
Explanation :
Question 2. Drop forging dies contain carbon of the order of
  1.     0.1 to 0.2%
  2.     0.25 to 0.5%
  3.     0.6 to 0.7%
  4.     0.7 to 0.9%
Answer: Option C
Explanation :
Question 3. Iron ore is usually found in the form of
  1.     Oxides
  2.     Carbonates
  3.     Sulphides
  4.     All of these
Answer: Option D
Explanation :
Question 4. Combined carbon in iron makes the metal
  1.     Soft and gives coarse grained crystalline structure
  2.     Soft and gives a fine grained crystalline structure
  3.     Hard and gives a coarse grained crystalline structure
  4.     Hard and gives a fine grained crystalline structure
Answer: Option D
Explanation :
Question 5. Free carbon in iron makes the metal
  1.     Soft and gives a coarse grained crystalline structure
  2.     Soft and gives a fine grained crystalline structure
  3.     Hard and gives a coarse grained crystalline structure
  4.     Hard and gives a fine grained crystalline structure
Answer: Option A
Explanation :
Question 6. German silver contains
  1.     1% silver
  2.     2% silver
  3.     5% silver
  4.     No silver
Answer: Option D
Explanation :

Check all Questions in this Topic : Click HERE