During transcription,the site on $DNA$ where $RNA$ polymerase binds is called .........

The figure shows three resistor configurations $R_1, R_2$,and $R_3$ connected to a $3\,V$ battery. If the power dissipated by the configurations $R_1, R_2$,and $R_3$ is $P_1, P_2$,and $P_3$ respectively,then:

How do ortho and para hydrogen differ from each other?

Filiform apparatus is a characteristic feature of .......

One die and a coin (both unbiased) are tossed simultaneously. The probability of getting $5$ on the top of the die and tail on the coin is

$\int \frac{\sin x+8 \cos x}{4 \sin x+6 \cos x} d x$ is equal to