The $EAN$ of platinum in potassium hexachloroplatinate $(IV)$ is :

For retting of jute,the fermenting microbe used is:

The given graphs $I$,$II$,and $III$ represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following statements are correct?

$A$ body is thrown vertically upwards and reaches its maximum height in $t$ seconds. The total time from the time of projection to reach a point at half of its maximum height while returning (in seconds) is:

Which of the following alkenes does $NOT$ exhibit cis-trans isomerism?

Which of the following metals releases hydrogen gas upon reaction with cold dilute $HNO_3$?