GENERAL KNOWLEDGE

Detailed explanation-1: -It is so because the temperature of hot liquid is high which decreases the viscosity As decrease of viscosity takes place with increase of temperature so hot liquid moves faster than the cold one.

Detailed explanation-2: -Heat is a form of energy. The heat energy from the water makes the water molecules in the hot water move faster than the water molecules in the cold water.

Detailed explanation-3: -Adding heat to a liquid adds energy to the particles, causing them to move faster and further apart from each other. This reduces the amount of resistance to flow and the amount of internal friction.

Detailed explanation-4: -Viscosity affects heat, and heat affects viscosity. When oil temperature increases, its viscosity decreases (the opposite is true for cold temperatures). That makes the oil easier to flow. It also explains why oil flows much more freely in the summer months when temperatures exceed 25 or 30 degrees.

Detailed explanation-5: -Viscosity is the measure of resistance of a fluid to flow. A fluid that is highly viscous has a high resistance (like having more friction) and flows slower than a low-viscosity fluid. To think of viscosity in everyday terms, the easier a fluid moves, the lower the viscosity.