MCQ
In the following groups of materials, which group/ groups contain only non $-$ biodegradable materials?
$(i)$ Wood, paper, leather.
$(ii)$ Polythene, detergent, $\text{PVC}$.
$(iii$) Plastic, detergent, grass.
$(iv)$ Plastic, bakelite, $\text{DDT}$.
$(i)$ Wood, paper, leather.
$(ii)$ Polythene, detergent, $\text{PVC}$.
$(iii$) Plastic, detergent, grass.
$(iv)$ Plastic, bakelite, $\text{DDT}$.
- A$(iii)$
- B$(iv)$
- C$(i)$ and $(iii)$
- ✓$(ii)$ and $(iv)$