Match the following metals in drinking water with their maximum prescribed concentration in $ppm$:

List-$I$ (Metal)	List-$II$ (Concentration in $ppm$)
$A$. $Mn$	$I$. $0.05$
$B$. $Zn$	$II$. $5.0$
$C$. $Cd$	$III$. $0.005$
$D$. $Cu$	$IV$. $3.0$

Match the following items correctly:

List-$I$	List-$II$
$(1)$ Vegetable waste	$(A)$ Takes $3$ to $5$ months for natural decomposition
$(2)$ Plastic materials	$(B)$ Takes $7$ to $10$ months for natural decomposition
$(3)$ Agricultural waste	$(C)$ Remains in original form for decades without decomposition

Determine whether the following statements are true or false:
$(1)$ The lowest region of the atmosphere where all living organisms,including humans,reside is called the troposphere.
$(2)$ The troposphere extends up to a distance of $25 \ km$ from sea level.
$(3)$ The region between $10 \ km$ and $50 \ km$ from sea level is called the stratosphere.
$(4)$ The ozone layer that protects living organisms is located in the troposphere.

Which of the following gases is not a greenhouse gas?

What is the reagent used for testing fluoride ion in water?

Identify the pollutant gases largely responsible for the discoloured and lustreless nature of marble of the Taj Mahal.