$1 \, \mu g = ........ \, mg$

Provide the full forms of the following:
$(i)$ $AZT$
$(ii)$ $CFC$
$(iii)$ $SI$

State whether the following statements are true or false:
$(i)$ The Law of Multiple Proportions was given by the scientist Dalton.
$(ii)$ $1 \ L = 1 \ dm^3$
$(iii)$ $10 \ cm = 1 \ dm$

At what temperature will the values of $^\circ C$ and $^\circ F$ be equal?

Fill in the blanks given below:
$(i)$ At ........ ${\,^\circ }{\text{C}}$,the values of temperature in both ${\,^\circ }{\text{C}}$ and ${\,^\circ }{\text{F}}$ are equal.
$(ii)$ The number of significant figures in $0.03$ is .....
$(iii)$ The closeness of various measurements for the same quantity is called .........
$(iv)$ The agreement of a particular value to the true value of the result is called ....

$4 \ L \ atm$ is equal to (in $cal$)