Which of the following concentration factors is affected by a change in temperature?

Identify $A$ and $B$ in the following reactions:

The number of ways in which $6$ men and $5$ women can dine at a round table,if no two women are to sit together,is:

$A$ candle placed $25 \ cm$ from a lens forms an image on a screen placed $75 \ cm$ on the other side of the lens. The focal length and type of the lens are:

Which of the following statements is $NOT$ correct for potash alum?

If $g$ is the acceleration due to gravity on the earth's surface,the gain in the potential energy of an object of mass $m$ raised from the surface of the earth to a height equal to the radius $R$ of the earth is