Earing is a defect found in steels after the following metal working operation (s). September 6, 2025 by Admin A. Deep drawing B. Rolling C. Extrusion D. Wire drawing ✅ The correct answer is option A.
Out of the following the refractive index is the highest for September 6, 2025 by Admin A. Glass B. Diamond C. Brine D. Kerosene ✅ The correct answer is option B.
Which of the following hardness tests does not measure the indentation hardness of metals and alloys ? September 6, 2025 by Admin A. Vicker’s hardness test B. Shore sceleroscope test C. Brinell hardness test D. Rockwell hardness test ✅ The correct answer is option B.
Kinematic viscosity of water as compared to that of air is September 6, 2025 by Admin A. More B. Same C. 15% more D. 15% less ✅ The correct answer is option D.
Number of electrons in the outermost shell of a semi-conductor material is September 6, 2025 by Admin A. 2 B. 4 C. 6 D. 8 ✅ The correct answer is option D.
A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid? September 6, 2025 by Admin A. Arsenic B. Antimony C. Lead D. None of these ✅ The correct answer is option C.
Colloids can be purified by September 6, 2025 by Admin A. Dialysis B. Reverse osmosis C. Coagulation D. Peptization ✅ The correct answer is option A.
Pick out the wrong statement about a fast breeder reactor. September 6, 2025 by Admin A. Uses molten sodium as moderator B. Converts fertile fuel into fissile fuel C. Requires highly enriched fuel D. Produces more fuel than it consumes ✅ The correct answer is option A.
Water hammer in pipelines results, when the flowing fluid September 6, 2025 by Admin A. Has very high velocity B. Has very high pressure C. Is brought to rest by gradually closing a valve D. Is suddenly brought to rest by closing a valve ✅ The correct answer is option D.
Ceramic tips for the cutting tool are prepared from __________ powder. September 6, 2025 by Admin A. Carbon B. Silicon carbide C. Aluminium oxide D. Tungsten ✅ The correct answer is option C.