The basic slag is

A. Water soluble fertilisers

B. Citrate soluble fertilisers

C. Alcohol soluble fertilisers

D. Insoluble fertilisers

Answer: Option B

Solution(By Examveda Team)

Basic slag is a byproduct of the steel industry low in silica and high in base-forming oxides that are used in the basic process of steelmaking and that is subsequently useful as a fertilizer.
It is mostly citrate soluble fertilizers, quicklime and magnesite introduced for refractory protection, neutralizing the alumina and silica separated from the metal.