Lakshya Education MCQs

Question: Machining properties of steel are improved by adding
Options:
A. Sulphur, lead, phosphorous
B. Silicon, aluminium, titanium
C. Vanadium, aluminium
D. Chromium, nickel
Answer: Option A
Explanation :

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More Questions on This Topic :

Question 1. In mottled cast iron, carbon is available in
  1.     Free form
  2.     Combined form
  3.     Nodular form
  4.     Partly in free and partly in combined state
Answer: Option D
Explanation :
Question 2. The hardness and tensile strength in austenitic stainless steel can be increased by
  1.     Hardening and cold working
  2.     Normalizing
  3.     Martempering
  4.     Full annealing
Answer: Option A
Explanation :
Question 3. The presence of hydrogen in steel causes
  1.     Reduced neutron absorption cross-section
  2.     Improved Weldability
  3.     Embrittlement
  4.     Corrosion resistance
Answer: Option C
Explanation :
Question 4. The presence of hydrogen in steel causes
  1.     Reduced neutron absorption cross-section
  2.     Improved Weldability
  3.     Embrittlement
  4.     Corrosion resistance
Answer: Option C
Explanation :
Question 5. Maximum percentage of carbon in austenite is
  1.     0.025%
  2.     0.26%
  3.     0.8%
  4.     1.7%
Answer: Option D
Explanation :
Question 6. German silver contains
  1.     1% silver
  2.     2% silver
  3.     5% silver
  4.     No silver
Answer: Option D
Explanation :

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