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?
Liquid N2O4 self-ionizes as
Which of the following oxides of nitrogen is a mixed anhydride of two acids?
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+
FeSO4 is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
Which statement is wrong for NO ?
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
The bond order in the NO molecule is
A solution of sodium in liquid ammonia is blue due to the presence of
Ammonia, on reaction with excess of chlorine, gives :
Ammonia gas can be dried by
Which of the following reactions is used in the preparation of N2?
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 fertilizers on repeated application would increase the acidity of the soil?
The reaction between urea and nitrous acid produces
Which of the following compounds does not give N2 on heating?
Ozone is prepared by the action of silent electric discharge upon oxygen in an apparatus called ozonizer. The reaction
In ozone, the central oxygen atom uses
Which of the following has pπ – dπ bonding ? (a) NO (b) SO (c) BO (d) CO
The number of lone pairs and the number of S—S bonds in S8 molecules are respectively:
HClO4 + P2O5 -> (A) + (B)
Which of the following statements regarding sulphur is incorrect?
The stability of the hydrides of oxygen, sulphur, selenium and tellurium decreases in the order
Oxygen is more electronegative than sulphur, yet H2S is acidic in nature while H2O is neutral because: