What is the density of water in $kg \ dm^{-3}$ if its density in $g \ cm^{-3}$ is $0.863$?

Choose the correct statements.
$A$. Weight of a substance is the amount of matter present in it.
$B$. Mass is the force exerted by gravity on an object.
$C$. Volume is the amount of space occupied by a substance.
$D$. Temperatures below $0^{\circ} C$ are possible in Celsius scale,but in Kelvin scale negative temperature is not possible.
$E$. Precision refers to the closeness of various measurements for the same quantity.

The sum of three values $12.0$, $19.034$ and $2.0143$ is equal to $X$. The number of significant figures in $X$ is

Convert the following into basic units:
$(i)$ $28.7\, pm$
$(ii)$ $15.15\, pm$
$(iii)$ $25365\, mg$

If the volume of $15.9 \ g$ of carbon tetrachloride is $10 \ mL$,calculate its density.

Consider the following:
$A) 0.0025$
$B) 500.0$
$C) 2.0034$
Number of significant figures in $A, B$ and $C$ respectively,are