A. Copper
B. Steel
C. Zinc
D. Aluminium
✅ The correct answer is option B.
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.
32. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its
A. Aqueous tension
B. Saturated humidity
C. Vapor pressure
D. Absolute humidity
✅ The correct answer is option A.
33. Which of the following fastening devices has its both ends threaded?
A. Bolt
B. Stud
C. Set screw
D. Split nut
✅ The correct answer is option B.
34. Desert air coolers being rendered ineffective in rainy season is due to
A. Low humidity
B. Low temperature
C. High humidity
D. Sunny weather
✅ The correct answer is option C.
35. Batch process is preferred over continuous process, when the
A. Product yields and quality can not be achieved in continuous process, because of long residence time
B. Sales demand of product is not steady
C. Same equipment can not be used for several processes of the same nature
D. All of the above
✅ The correct answer is option B.
36. Large scale fire on fuel gas line is normally extinguished by
A. Water
B. Steam
C. Foam
D. Nitrogen
✅ The correct answer is option D.
37. In the blast furnace, incorporation of water vapour in the blast gives the following effect.
A. Increases the reducing potential of the gas
B. Increases the flame temperature
C. No significant change occurs
D. Increases the hydrogen content in the metal
✅ The correct answer is option A.
38. Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant ‘K’ is
A. 10 atmv
B. 10⁵ atm⁻¹
C. 10 (dimensionless)
D. 10⁵ (dimensionless)
✅ The correct answer is option B.
39. Existence of velocity potential implies that the fluid is
A. Irrotational
B. Ideal
C. Compressible
D. In continuum
✅ The correct answer is option A.
40. Number of electrons in the outermost orbit of a semi-conductor is
A. 2
B. 4
C. 6
D. 8
✅ The correct answer is option B.