What is the mycelium composed of?

If the vertex of the conic $y^{2}-4y=4x-4a$ always lies between the straight lines $x+y=3$ and $2x+2y-1=0$,then

Which of the following reactions will not yield an alkyl halide?

In a cyclic process,the work done by the system is

$A$ $4 \mu F$ capacitor is charged by a $200 \ V$ battery. It is then disconnected from the supply and connected to another uncharged $2 \mu F$ capacitor. During the process,the loss of energy (in $J$) is:

Which of the following was isolated and identified by Skoog and Miller?