The largest unit of energy among the following is ...... .

Provide the full forms for the following:
$(i)$ $CGPM$
$(ii)$ $amu$
$(iii)$ $u$

Match the following prefixes with their multiples:

Prefixes	Multiples
$i$. micro	$10^{6}$
$ii$. deca	$10^{9}$
$iii$. mega	$10^{-6}$
$iv$. giga	$10^{-15}$
$v$. femto	$10$

The dimensions of an aluminum block are $3.0 \, \text{inch} \times 4.0 \, \text{inch} \times 5.0 \, \text{inch}$. What is the mass of this block in grams? The density of aluminum is $2.7 \, \text{g/cm}^3$ and $1 \, \text{inch} = 2.54 \, \text{cm}$.

The unit $J \, Pa^{-1}$ is equivalent to

The number of significant figures in $2.0400$ is