Chemical Engineering Basics - Study Mode
[#1191] When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively
Correct Answer
(A) Decreases & increases
[#1192] Surface tension is due to the __________ forces.
Correct Answer
(C) Cohesive
Explanation
Solution: Cohesive Forces: Attractive forces between molecules of the same type are called cohesive forces. Adhesive Forces: Attractive forces between molecules of different types are called adhesive forces. Surface Tension: Cohesive forces between molecules cause the surface of a liquid to contract to the smallest possible surface area. This general effect is called surface tension. Source : lumenlearning.com
[#1193] Which of the following is an example of stress corrosion ?
Correct Answer
(C) Both (A) & (B)
[#1194] Which of the following is not a characteristic observed in material failure by fatigue fracture ?
Correct Answer
(B) Initiation of crack from below the surface does not occur
[#1195] While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
Correct Answer
(B) 2000