Solution:
Cyanide poisoning causes death in seconds because it break the electron transport chain. It causes coma followed by cardiac arrest and death.
Solution:
Tar roads gets damaged easily during rainy season. This is because tar roads are prone to water damage very quickly. In the tar road, bitumen plays an important road to create a bond between the aggregate. But, tar road does not give more strength than concrete road, because bitumen respond to heat and water.
Solution:
Paraffin wax is obtained from petroleum by dewaxing light lubricating oil stocks. It is used in candles, wax paper, polishes, cosmetics, and electrical insulators.