19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements is correct regarding the behaviour of white phosphorus?
Iodine reacts with concentrated HNO₃ to produce
The percentage of p-character in the orbitals forming P–P bonds in P₄ is:
The reaction of white phosphorus with aqueous NaOH gives phosphine and another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and other product are respectively:
Gold reacts with aqua regia forming
Which of the following oxides of nitrogen is a mixed anhydride of two acids?
Liquid N₂O₄ self-ionizes as
Which of the following complexes is responsible for the brown colour of the ring formed in the ring test for the nitrates? (a)[Fe(CN)₅NO]3+ (b)[Fe(H₂O)₄NO]2+NO⁺
Which of the following reactions gives reasonably pure NO?
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?
At present, HNO₃ is industrially prepared by the
FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
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 :
A solution of sodium in liquid ammonia is blue due to the presence of
Phosphorus reacts with concentrated HNO₃ to produce
Which of the following compounds does not give N₂ on heating?
Which of the following statements is true for the H₃PO₃ molecule?
An aqueous solution of ammonia consists of
Which of the following gases is the least reactive?
Which of the following oxides is the most acidic?
Which of the following forms strong p - p bonding