19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following reactions gives reasonably pure NO?
Iodine reacts with concentrated HNO₃ to produce
Which of the following oxides of nitrogen is solid?
In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are
FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
Ammonia, on reaction with excess of chlorine, gives :
A solution of sodium in liquid ammonia is blue due to the presence of
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⁺
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…
Which of the following compounds does not give N₂ on heating?
Ammonia gas can be dried by
Which of the following oxides of nitrogen is a mixed anhydride of two acids?
Gold reacts with aqua regia forming
Which of the following gases is the least reactive?
An aqueous solution of ammonia consists of
Which of the following forms strong p - p bonding
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following oxides is the most acidic?
N₂ is commercially prepared by
Which one of the following compounds is most explosive?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
Which of the following is the increasing order of enthalpy of vaporization?
Which of the following reactions is used in the preparation of N₂?
Small quantities of very pure N₂ is obtained by carefully warming