Question

III. Tick (✓) the correct and cross (X) the wrong statement:3. Potassic fertilisers should be added in the later stages of plant growth.
4. Soaps form insoluble scum of calcium and magnesium ions with hard water.
MCQ
1. optical fibre are made from
(a) fine sand
(b) purified natural quartz
(c) dry ice and sand
(d) polyethene​

Answer 1

Answer:

Polyethylene is the answer. Hope this helps