What type of agent is PCl5 when it reacts with H2?

Which oxoacid of sulfur is commonly used for disinfecting swimming pools as well as delignification of wood?

What is the name of the natural process that is responsible for replenishing N2 back in the atmosphere from NO3–?

Which of the following is a photosensitive element?

How many unshared pair of electrons does an ammonia molecule have?

Which of the following does not react with hydrochloric acid to give chlorine as a product?

Which allotrope of phosphorus is the most reactive?

Who discovered the element chlorine?