Give reasons for spiders and scorpions are very different from each other but are placed in the same phylum - Arthopoda.
Spiders and scorpions being different from each other are placed in the phylum arthropoda because of the following reasons:
Calcium oxide and phosphorus pentoxide are very good drying agents but they are not used to dry HCl gas. Give reasons for each.
We have fibres, namely synthetic and natural. When talking about the synthetic fibres, we see that they are very different in properties from each other. For instance, Rayon is a synthetic fibre but it is very different from other synthetic fibres. How?