Machinability
Ductility
Strength
Hardness
✅ The correct answer is option D.
Engineering
Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.
2152. White cast iron as compared to grey cast iron is
More durable
Very brittle
Very hard
All of the above
✅ The correct answer is option D.
2153. A bearing metal should not have
Enough plasticity
Low thermal conductivity
Low co-efficient of friction
High toughness
✅ The correct answer is option B.
2154. Percentage of silver in German silver is
5
10
20
0
✅ The correct answer is option D.
2155. Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of
Nickel
Copper
Stainless steel
Brass
✅ The correct answer is option B.
2156. Which of the following has the least carbon percentage?
Low carbon steel
Mild steel
Wrought iron
White cast iron
✅ The correct answer is option C.
2157. Babbit metal (used for making bearings) comprises of
Mainly tin (85%) and lead
Saw dust and iron dust mixture
Zinc and aluminium
Copper and aluminium
✅ The correct answer is option A.
2158. For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is
Stainless steel
Cast iron
Aluminium
Nickel
✅ The correct answer is option B.
2159. Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?
Increase in calorific value of the fuel
Increase in flame temperature
Reduction in scale losses
Saving in fuel consumption
✅ The correct answer is option A.
2160. __________ is a donor impurity for semi-conductors.
Boron
Antimony
Gallium
None of these
✅ The correct answer is option B.