$A$ cuboidal container is filled with $20 \ L$ of water. If the length of the container is $30 \ cm$ and the width is $25 \ cm$,then the height will be ..... $dm$.

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.

One atmosphere is numerically equal to approximately

Given $P = 0.0030 \ m$,$Q = 2.40 \ m$,$R = 3000 \ m$. The significant figures in $P, Q$,and $R$ are respectively:

Match the physical quantities in List-$A$ with their corresponding units in List-$B$.

List-$A$	List-$B$
$(1)$ Electric current	$(A)$ Kilogram
$(2)$ Luminous intensity	$(B)$ Mole
$(3)$ Amount of substance	$(C)$ Ampere
$(4)$ Mass	$(D)$ Candela

Match the following physical quantities with their appropriate units.

Physical Quantity	Unit
$(A)$ Molarity	$(1)$ $g \ mL^{-1}$
$(B)$ Mole fraction	$(2)$ $mol$
$(C)$ Mole	$(3)$ $Pascal$
$(D)$ Molality	$(4)$ $Unitless$
$(E)$ Pressure	$(5)$ $mol \ L^{-1}$
$(F)$ Luminous intensity	$(6)$ $Candela$
$(G)$ Density	$(7)$ $mol \ kg^{-1}$
$(H)$ Mass	$(8)$ $N \ m^{-1}$
	$(9)$ $kg$