19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The number of P–O–P bonds in the structure of phosphorus pentoxide and phosphorus trioxide are respectively (2005)
At room temperature, O₃ is absorbed by
In the presence of water, sulphur is oxidized by ozone to give
The gases absorbed by alkaline pyrogallol and oil of cinnamon are respectively
White phosphorus is kept under
White phosphorus is more reactive than N₂ because
Which of the following oxides of nitrogen is solid?
Which of the following statements is correct regarding the behaviour of white phosphorus?
Ammonia, on reaction with excess of chlorine, gives :
A solution of sodium in liquid ammonia is blue due to the presence of
In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are
The percentage of p-character in the orbitals forming P–P bonds in P₄ is:
Which of the following compounds does not give N₂ on heating?
The reaction between urea and nitrous acid produces
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…
Small quantities of very pure N₂ is obtained by carefully warming
Which of the following forms strong p - p bonding
N₂ is commercially prepared by
Ammonia gas can be dried by
Which of the following reactions is used in the preparation of N₂?
The reaction of P₄ with X leads selectively to P₄O₆. The X is:
Which of the following is the increasing order of enthalpy of vaporization?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which one of the following compounds is most explosive?
Which of the following oxides is the most acidic?