$A$ storehouse of collected plant specimens that are dried,pressed,and preserved on sheets is known as .........

Which of the following methods is used to obtain pure water from seawater?

Which of the following has the lowest thermal stability?

An ammeter gives full scale deflection when a current of $1.0 \ A$ is passed through it. To convert it into a $10 \ A$ range ammeter,the ratio of its resistance $(G)$ to the shunt resistance $(S)$ will be:

$A$ parallel plate air capacitor is charged to a potential difference of $V$. After disconnecting the battery,the distance between the plates of the capacitor is increased using an insulating handle. As a result,the potential difference between the plates:

Which of the following factors favour the dissociation of $HbO_2$ at the tissue level?