There are two types of water hardness: temporary and permanent hardness. Temporary hardness is due to the presence of calcium hydrogen carbonate Ca(HCO3)2(aq) and magnesium hydrogen carbonate Mg(HCO3)2(aq).
Rearrange the parts of the sentence in correct order.
P: Added to this is their economic dissatisfaction. Q: The youth get frustrated when they see a great deal of disparity between the theory and its application. R: All these factors blend together and give rise to a cult of violence. S: This causes them to wonder whether all that they ever learnt would overcome in use or would go waste.