Option 2, "Coke," is correctly identified as not being a byproduct of petroleum. Here's a detailed explanation supporting this: 1. Coke: Coke is primarily a byproduct of the coal industry, not petroleum. It is produced by the destructive distillation of coal in the absence of air, a process known as coking. Coke is used mainly in the steel industry as a fuel and as a reducing agent in smelting iron…Read More