Question : Whose research was fundamental in establishing the modern discipline known as surface tension, which describes the properties of liquid and solid surfaces and interfaces?
Option 1: Gerty Cori
Option 2: Nettie Stevens
Option 3: Lise Meitner
Option 4: Agnes Pockels
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Correct Answer: Agnes Pockels
Solution : The correct answer is Agnes Pockels.
Agnes Pockels, a German chemist, played a crucial role in the development of the present-day science of surface tension. She was one of the first scientists to conduct systematic research on the characteristics of both liquid and solid surfaces and interfaces. Her interest in soap films drove her surface tension studies. She invented several new experimental techniques to study the characteristics of soap films and made several significant discoveries.
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Question : Which of the following statements is not correct about surface tension?
Option 1: Surface tension is typically measured in dynes cm.
Option 2: The shape of the water drop is spherical due to surface tension.
Option 3: At room temperature, the surface tension of water is less than ethyl alcohol.
Option 4: The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.
Question : Name the process by which bubbles from liquid are formed?
Option 1: Effervescence
Option 2: Surface tension
Option 3: Surface energy
Option 4: Degasification
Question : Mercury is a:
Option 1: solid metal
Option 2: liquid metal
Option 3: Solid non-metal
Option 4: liquid non-metal
Question : An emulsion is a colloid of a
Option 1: Gas in a liquid
Option 2: liquid in a liquid
Option 3: liquid in a gas
Option 4: Gas in a solid
Question : Soap bubble attains spherical shape due to _____.
Option 1: inertia
Option 2: pressure
Option 3: surface tension
Option 4: viscosity
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