Question 1:
What is the process called when a substance changes from a solid to a liquid?
Explanation: The correct answer is B) Melting. Melting is the process in which a substance changes from the solid phase to the liquid phase. It occurs when the temperature of the substance exceeds its melting point.
Question 2:
Which of the following is an endothermic process?
Explanation: The correct answer is C) Vaporization. Vaporization is an endothermic process as it requires the absorption of heat energy to change a substance from the liquid phase to the gaseous phase. It occurs when the temperature of the substance exceeds its boiling point.
Question 3:
Which of the following is an exothermic process?
Explanation: The correct answer is D) Freezing. Freezing is an exothermic process as it releases heat energy when a substance changes from the liquid phase to the solid phase. It occurs when the temperature of the substance is lowered below its freezing point.
Question 4:
At which point does the phase transition from liquid to solid occur?
Explanation: The correct answer is C) Freezing point. The phase transition from liquid to solid occurs at the freezing point of a substance. At this temperature, the substance loses enough thermal energy to change its state from liquid to solid.
Question 5:
Which process involves the direct phase transitionfrom solid to gas without going through the liquid phase?
Explanation: The correct answer is A) Sublimation. Sublimation is the process in which a substance directly transitions from the solid phase to the gaseous phase without going through the liquid phase. It occurs when the temperature and pressure conditions allow the solid to vaporize without melting.
- Click to Check the published quizzes on various Categories
- Click to Practice various fundamentals of PMP Certification
- Click to Check Published courses on Piping Engineering
- Click to check Video Liberary (with more than 600+ Videos)