Is 1000cm³

equal to 1L?

Q. How 1L converts to $10d{m}^3$ or to $1000c{m}^3$?

Q. $({\cos }^{-1}l+{\cos }^{-1}m+{\cos }^{-1}n)$ is equal to

Q. Three containers $C_1,C_2$ and $C_3$ have water at different temperatures. The table below shows the final temperature $T$ when different amounts of water (given in litres) are taken from each container and mixed (assume no loss of heat during the process)

$C_1$	$C_2$	$C_3$	$T$
$1l$	$2l$	$-$	${60}^{\circ }C$
$-$	$1l$	$2l$	${30}^{\circ }C$
$2l$	$-$	$1l$	${60}^{\circ }C$
$1l$	$1l$	$1l$	$\theta$

The value of $\theta$ (in ${}^{\circ }C$ to the nearest integer) is _______.

Q. $1\text{L}=\frac{1}{1000}{\text{m}}^3$

Q. What volume of $4M$ $H_2{SO}_4$ is needed to produce $1L$ of $1M$ $H_2{SO}_4$?