Among the following a natural polymer is [MP PET 1993; BCECE 2005]
As we have seen, cellulose is a natural polymer. It is present in the cell wall of plants.
A match box exhibits
[MP PET 1993, 95]
In a PN-junction diode [MP PET 1993]
When lead storage battery is charged
[MP PET 1993; MP PMT 2000]
Image formed by a convex mirror is [MP PET 1993]