How many wavelengths of $Kr^{86}$ are there in one metre?

The biggest unit of length among the following is:

$A$ physical quantity is measured and its value is found to be $nu$, where $n$ is the numerical value and $u$ is the unit. Then which of the following relations is true?

$Torr$ is the unit of

$J s$ is the unit of . . . . . . physical quantity.

What is heat? Write $SI$ and $CGS$ unit of heat and give their relation.