Which of the following substances,if introduced into the blood stream,causes coagulation of blood at the site of its introduction?

Chloramine-$T$ is a

Which of the following has the maximum boiling point?

Which characteristics are included in the Kingdom $Monera$?

The sensitivity of a galvanometer is $60 \text{ div/A}$. When a shunt is used,its sensitivity becomes $10 \text{ div/A}$. If the resistance of the galvanometer is $20 \ \Omega$,then the value of the shunt used is: (in $\Omega$)

There are $n$ distinct points on the circumference of a circle. The number of pentagons that can be formed with these points as vertices is equal to the number of possible triangles. Then the value of $n$ is