Hamad Group VA and VIA Elements 17/12/2021 A. ZnS B. PbS C. HgS D. FeS Related 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... Phosphene gas will be produced if phosphorous acid is subjected to___________________?A. Oxidation B. Reduction C. Decomposition D. Both b & c... Which one of following is not a property of pure quartz ?A. Coloured solid B. Brittle C. Hard D. All of above... Which of the following does not contain phosphorus ?A. Yolk of egg B. Bone C. Nerves D. Steel...
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