In a liquid, some energetic molecules break free from the surface even when the liquid is too cold for bubbles to form. What is the name of this process?
General Science / Physics Class 9th MCQs — Multiple-choice practice
مائع میں، کچھ توانائی بخش مالیکیول سطح سے آزاد ہو جاتے ہیں یہاں تک کہ جب مائع بلبلوں کے بننے کے لیے بہت ٹھنڈا ہو۔ اس عمل کا نام کیا ہے؟
- A. Boiling
- B. Condensation
- C. Evaporation
- D. Convection
Correct answer
Evaporation
Explanation
Explanation Evaporation is the process by which molecules escape from the surface of a liquid to become vapor, even if the liquid is below its boiling point. This occurs when some molecules have enough energy to break free from the surface tension of the liquid and turn into vapor. Key Points: Boiling occurs when a liquid is heated to its boiling point , causing bubbles to form and rise to the surface. Condensation is the process by which vapor is converted back into a liquid. Convection is the transfer of heat through the movement of fluids.
Continue with Physics Class 9th MCQs MCQs, explore all General Science topics, or try the Physics Class 9th MCQs practice quiz.
More Physics Class 9th MCQs questions
- A right rope walker carries a long pole to ______?
- Enzyme activity decreased by ______?
- Centrifugal force is always directed _____?
- Newton's law of gravitation holds between every two objects on the _____?
- Which one is a scalar quantity?Time ,Force, Velocity ,Acceleration
- The amount of heat needed to convert a substance from liquid to gas is called?
Found an error? Report a correction with this page URL and a supporting source.