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 : 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

Question : A solid metallic sphere of radius 4 cm is melted and recast into spheres of 2 cm each. What is the ratio of the surface area of the original sphere to the sum of the surface areas of the spheres, so formed?

Option 1: 2 : 1

Option 2: 2 : 3

Option 3: 1 : 2

Option 4: 1 : 4

Question : Soap bubble attains spherical shape due to _____.

Option 1: inertia

Option 2: pressure

Option 3: surface tension

Option 4: viscosity

Question : The  process of photosynthesis involves conversion of 

Option 1: chemical energy into radiant energy

Option 2: chemical energy into mechanical energy

Option 3: solar energy into chemical energy

Option 4: mechanical energy into solar energy