Identify the mixture that shows positive deviation from Raoult's law.

The function $f(x) = |x| + \frac{|x|}{x}$ is

The histogens are classified on the basis of

Ethanol,when reacted with $PCl_5$,gives $A$,$POCl_3$,and $HCl$. $A$ reacts with silver nitrite to form $B$ (major product) and $AgCl$. $A$ and $B$ are respectively:

An object $2.4 \; m$ in front of a lens forms a sharp image on a film $12 \; cm$ behind the lens. $A$ glass plate $1 \; cm$ thick,of refractive index $1.50$ is interposed between the lens and the film with its plane faces parallel to the film. At what distance (from the lens) should the object be shifted to be in sharp focus on the film (in $; cm$)?

When a train stops suddenly,passengers in the running train feel an instant jerk in the forward direction because