Preeti has collected following items from her kitchen: i.Amla ii.Shampoo iii. Tamarind iv. Soap v. Detergent vi. Unripe mangoes vii. Gooseberry She classified them as acidic and basic substances. Which of the following classifications is correct?
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)
Match the substances in Column I with those in Column II. [5 MARKS]