19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Gold reacts with aqua regia forming
White phosphorus is kept under
Which of the following ions does not have an S—S linkage?
White phosphorus is more reactive than N₂ because
When conc. H₂SO₄ is heated with P₂O₅ the acid is converted to (UP CPMT 2012)
The true statement for the acids of phosphorus, H₃PO₂, H₃PO₃ and H₃PO₄ is
H₂SO₄ is manufactured from SO₂(g) by the
FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
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 oxides of nitrogen is solid?
Which of the following oxides of nitrogen is a mixed anhydride of two acids?
Ammonia, on reaction with excess of chlorine, gives :
A solution of sodium in liquid ammonia is blue due to the presence of
Liquid N₂O₄ self-ionizes as
In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are
Which of the following compounds does not give N₂ on heating?
The reaction between urea and nitrous acid produces
Small quantities of very pure N₂ is obtained by carefully warming
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…
N₂ is commercially prepared by
Ammonia gas can be dried by
Which of the following reactions gives reasonably pure NO?
Which of the following reactions is used in the preparation of N₂?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following oxides is the most acidic?