Which group has only biodegradable materials?
Wool, grass, paper
Cotton, polyester, paper
Dried leaf, plastic bag, lemon
Wool, crude oil, ceramics
Wool, grass and paper are biodegradable.
Which of the following are biodegradable and which non-biodegradable? Glass bottle, Paper, Ballpoint pen refill, Hay, DDT, Wheat, Cake, Wood, Polythene bag, Jute bag, Cotton cloth, Grass, Vegetable peels
Question 12 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)