Chloropicrin is obtained by the reaction of

If $\int e^x \left( \frac{1-\sin x}{1-\cos x} \right) dx = f(x) + \text{constant}$,then $f(x)$ is equal to

In context with beryllium,which one of the following statements is incorrect?

An ideal gas of mass $m$ in a state $A$ goes to another state $B$ via three different processes as shown in the figure. If ${Q_1}, {Q_2}$ and ${Q_3}$ denote the heat absorbed by the gas along the three paths,then

$A$ weight $W$ can be hung in any of the following four ways by a string of the same type. In which case is the string most likely to break?

When $n-p-n$ transistor is used as an amplifier: