What are the various factors affecting the viscosity of a liquid explain?
 

A steel ball is dropped in a viscous liquid. The distance of the steel ball from the top of the liquid is shown below. The terminal velocity of the ball is closest to

Statement (A): When the temperature increases the viscosity of gases increases and the viscosity of liquids decreases.

Statement (B): Water does not wet an oily glass because cohesive force of oil is less than that of water.

Statement (C) : A liquid will wet a surface of a solid if the angle of contact is greater than $90°$.

A sphere of radius $r$ is dropped in a liquid from its surface. Which of the following graphs is/are correct?

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

On the opposite sides of a wide vertical vessel filled with water, two identical holes are opened, each having the cross-sectional area $S=0.50 {\mathrm{cm}}^2$. The height difference between them is equal to $\mathrm{\Delta }h=51 \mathrm{cm}$. Find the resultant force of reaction of the water flowing out of the vessel.

$\left(\text{Gravitational acceleration, }g=9.8 \mathrm{m} {\mathrm{s}}^{-2}\text{ and Density of water }=1000 \mathrm{Kg} {\mathrm{m}}^{-3}\right)$

How does viscosity affect pressure drop?