19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
White phosphorus reacts with NaOH to give PH₃ and NaH₂PO₂. This reaction involves
Phosphorus reacts with concentrated HNO₃ to produce
Iodine reacts with concentrated HNO₃ to produce
At present, HNO₃ is industrially prepared by the
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
Platinum reacts with aqua regia to produce chloroplatinic acid represented by the formula
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?
A solution of sodium in liquid ammonia is blue due to the presence of
FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is
White phosphorus is kept under
Which of the following statements is true for the H₃PO₃ molecule?
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⁺
Small quantities of very pure N₂ is obtained by carefully warming
Which of the following compounds does not give N₂ on heating?
Which of the following reactions is used in the preparation of N₂?
The reaction between urea and nitrous acid produces
Which of the following gases is the least reactive?
Which of the following forms strong p - p bonding
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
Which of the following is the increasing order of enthalpy of vaporization?