FOOD TECHNOLOGY

FOOD CHEMISTRY

CARBOHYDRATES PROTEINS AND LIPIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
A
adhesion
B
surface tension
C
solvent properties
D
nonpolar
Explanation: 

Detailed explanation-1: -The high surface tension helps the paper clip-with much higher density-float on the water. The cohesive forces between liquid molecules are responsible for the phenomenon known as surface tension.

Detailed explanation-2: -An object floats when the buoyant force is large enough to counter the object’s weight. So a large hollow object might float because large means more water displaced – so more buoyant force – and hollow means relatively little weight. A small solid object might not float, however.

Detailed explanation-3: -Surface tension allows water to hold up materials heavier and denser than itself. For example, the high surface tension of water enables a paperclip to float on the surface of water, and also allows some insects to walk on the surface of water.

There is 1 question to complete.