19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements regarding sulphur is incorrect?
PH₃ and NH₃ on separate reaction with bleaching powder produce respectively
Solid PCl₅ exists as
H₂S turns an acidified KMnO₄ solution
The number of lone pairs and the number of S—S bonds in S₈ molecules are respectively:
White phosphorus reacts with concentrated HNO₃ to give
In the presence of water, sulphur is oxidized by ozone to give
Which of the following statements is correct regarding the behaviour of white phosphorus?
The percentage of p-character in the orbitals forming P–P bonds in P₄ is:
The reaction of P₄ with X leads selectively to P₄O₆. The X is:
White phosphorus is more reactive than N₂ because
In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are
Which of the following oxides of nitrogen is solid?
On boiling phosphorus with KOH solution, product formed is
White phosphorus is kept under
Mg (NH₄)PO₄ and Na(NH₄) HPO₄ are heated separately. Which of the following statements is/are completely incorrect regarding the product obtained in the above process? (I) Same gas is evolved (II) Same type of phosphat…
Ammonia gas can be dried by
The reaction between urea and nitrous acid produces
Ammonia, on reaction with excess of chlorine, gives :
Small quantities of very pure N₂ is obtained by carefully warming
A solution of sodium in liquid ammonia is blue due to the presence of
White phosphorus reacts with NaOH to give PH₃ and NaH₂PO₂. This reaction involves
Which of the following compounds does not give N₂ on heating?
An aqueous solution of ammonia consists of
Which of the following gases is the least reactive?