Floral formula given below represents the family with one of the following group of plants?

Identify $acetaldoxime$.

The mean of four observations is $3$. If the sum of the squares of these observations is $48$,then their standard deviation is

Efficiency of a heat engine whose sink is at a temperature of $300 ~K$ is $40 \%$. To increase the efficiency to $60 \%$,keeping the sink temperature constant,the source temperature must be increased by (in $~K$)

What is the current through an ideal $P-N$ junction diode shown in the figure below? (in $mA$)

Feeling the tremors of an earthquake,a scared resident of the seventh floor of a multistoreyed building starts climbing down the stairs rapidly. Which hormone initiates this action?