Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________?
A. Phosphine
B. Phosphorus
C. Water
D. Phosphorus pentoxide
Submitted by :- Jamil Ahmed
Acetic anhydride can be obtained by treating ethyl alcohol with___________________?
Allotropic form of phosphorus that is poisonous is___________________?
The element of group VIA are called as ________________?
A. Halogens
B. Chalcogens
C. pnictogens
D. none of them
E. all of them
Submitted by :- Jamil Ahmed
Which one of the following compounds usually smells like garlic ?
The composition of brown ring in nitrate test is_________________?
Which one of the following is not the use of graphite ?
A. Lead pencils
B. Abrasive
C. Lubricant
D. Electrode of electrolytic cell
Submitted by :- Jamil Ahmed
Which of the following does not contain phosphorus ?
A. Yolk of egg
B. Bone
C. Nerves
D. Steel
Submitted by :- Jamil Ahmed