Where is the Central National Herbarium located?

Statement $P$: $A$ herbarium is a storehouse of plant specimens collected from various places.
Statement $Q$: There are specific methods for preserving plant specimens in herbaria.

In a herbarium,which of the following balls are placed to protect plant specimens from fungi,insects,and moisture?

What are taxonomical aids?

Which of the following chemicals is used for poisoning the specimens in herbarium technique?

Match the items given in Column $I$ with those in Column $II$ and select the correct option given below:

Column $I$	Column $II$
$(a)$ Herbarium	$(i)$ It is a place having a collection of preserved plants and animals.
$(b)$ Key	$(ii)$ $A$ list that enumerates methodically all the species found in an area with brief description aiding identification.
$(c)$ Museum	$(iii)$ Is a place where dried and pressed plant specimens mounted on sheets are kept.
$(d)$ Catalogue	$(iv)$ $A$ booklet containing a list of characters and their alternates which are helpful in identification of various taxa.