In the following groups of materials, which group (s) contains only no

1.	In the following groups of materials, which group (s) contains only non-biodegradable items? (i) Wood, paper, leather (ii) Polythene, detergent, PVC (iii) Plastic, detergent, grass (iv) Plastic, bakelite, DDT (a) (iii) (b) (iv) (c) (i) and (iii) (d) (ii) and (iv)
Answer» The answer is (d) (ii) and (iv) (Group i) has wood and leather which are biodegradable. (Group iii) has grass which is biodegradable hence the answer is (d) (ii) and (iv)

In the following groups of materials, which group (s) contains only non-biodegradable items? (i) Wood, paper, leather (ii) Polythene, detergent, PVC (iii) Plastic, detergent, grass (iv) Plastic, bakelite, DDT (a) (iii) (b) (iv) (c) (i) and (iii) (d) (ii) and (iv)

Answer»

The answer is (d) (ii) and (iv)

(Group i) has wood and leather which are biodegradable.
(Group iii) has grass which is biodegradable hence the answer is (d) (ii) and (iv)