Acetic anhydride can be obtained by treating ethyl alcohol with___________________?
A. P2O5 B. H2SO4 C. Both A and B D. PCI5
Chemistry MCQs
Phosphorous acid upon thermal decomposition yields phosphoric acid and____________________?
A. Phosphine B. Phosphorus C. Water D. Phosphorus pentoxide
P2O5 is a hygroscopic powder which sublimes at______________?
A. 260°C B. 360°C C. 630°C D. 620°C
Phosphoric acid is a weak acid and its basicity is____________________?
A. 1 B. 3 C. zero D. 2
All the elements in group VIA are ___________________ in nature?
A. hygroscopic B. metals C. polymeric D. all of above
Which allotropic form of phosphorous is the most stable ?
A. White B. black C. red D. Violet
The chemical composition of cinnabar is__________________?
A. ZnS B. PbS C. HgS D. FeS
Oxygen and sulphur resemble in all except________________?
A. Electronic conviguration of valence shell electrons B. Show allotropy C. Polymeric D. Show same oxidation state
Arsenic oxides are removed by passing through_________________?
A. Ferric hydroxide B. Sodium hydroxide C. Calcium hydroxide D. Aluminium hydroxide
When sulphuric acid is treated with ethanol sulphuric acid behaves like________________?
A. an acid B. a dehydrating agent C. an oxidizing agent D. as sulphonating agent