What is the primary product when carbon is treated with concentrated sulfuric acid?

Which allotrope of phosphorus is also called yellow phosphorus?

What is the structure of phosphine?

What is the range of the oxidation states shown by phosphorus in its oxoacids?

What is the maximum covalency of the nitrogen atom?

Which of the following processes involves heating a carbonate ore to form metal oxide?

Which the following is the correct order of oxidizing power of perhalates?

Which of the following methods is used to form ozone from oxygen?