SELECT * FROM question_mgmt as q WHERE id=2064 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=62 and ex_no='2' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
Write main differences between the properties of white phosphorus and red phosphorus.
White phosphorus | Red Phosphorus |
It is a soft and waxy solid. It possesses a garlic smell. |
It is a hard and crystalline solid, without any smell. |
It is poisonous. | It is non-poisonous. |
It is insoluble in water but soluble in carbon disulphide. | It is insoluble in both water and carbon disulphide. |
It undergoes spontaneous combustion in air. | It is relatively less reactive. |
In both solid and vapour states, it exists as a P4 molecule. |
It exists as a chain of tetrahedral P4 units. |
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