27. The joint for soldering is supported by binding wire made of
A. Mild steel
B. Copper
C. Soft iron
D. Stainless steel
✅ The correct answer is option C.
29. Water flow in the river during flood can be categorised as the __________ flow.
A. Unsteady uniform
B. Unsteady non-uniform
C. Steady uniform
D. Steady non-uniform
✅ The correct answer is option B.
31. L.D. (Linz-Donawitz) converter is used in the production of
A. Copper
B. Steel
C. Zinc
D. Aluminium
✅ The correct answer is option B.
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.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm².
A. 6
B. 18
C. 38
D. 52
✅ The correct answer is option B.
4. The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively
A. 7 and 30
B. 10 and 50
C. 2 and 50
D. 13 and 55
✅ The correct answer is option C.
7. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the __________ joint.
A. Butt
B. Lap
C. Welded
D. None of these
✅ The correct answer is option B.
10. The leaching solvent used in Baeyer’s process for the purification of bauxite is
A. Ammonium hydroxide
B. Sodium carbonate
C. Sodium hydroxide
D. Ammonium carbonate
✅ The correct answer is option B.
12. Evaporative cooling process employs a combination of cooling and humidification in which the
A. Sensible heat is added
B. Sensible heat is removed and the latent heat is added
C. Latent heat is removed
D. Sensible heat is added and latent heat is removed
✅ The correct answer is option B.
14. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the
A. Partial pressure of water vapour is less than the total pressure
B. Humidity is < 100% & dew point temperature of air has not reached
C. Dew point temperature of air has not reached & air is not saturated fully
D. Air is fully saturated
✅ The correct answer is option D.