19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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 a mixed anhydride of two acids?
Liquid N₂O₄ self-ionizes as
Which of the following reactions gives reasonably pure NO?
At present, HNO₃ is industrially prepared by the
Phosphorus reacts with concentrated HNO₃ to produce
Iodine reacts with concentrated HNO₃ to produce
Gold reacts with aqua regia forming
Platinum reacts with aqua regia to produce chloroplatinic acid represented by the formula
White phosphorus is kept under
White phosphorus is more reactive than N₂ because
Which of the following statements is correct regarding the behaviour of white phosphorus?
The percentage of p-character in the orbitals forming P–P bonds in P₄ is:
The reaction of P₄ with X leads selectively to P₄O₆. The X is:
On boiling phosphorus with KOH solution, product formed is
White phosphorus reacts with NaOH to give PH₃ and NaH₂PO₂. This reaction involves
PCl₅ on hydrolysis gives
PH₃ and NH₃ on separate reaction with bleaching powder produce respectively
Solid PCl₅ exists as
White phosphorus reacts with concentrated HNO₃ to give
Syrupy H₃PO₄ is viscous due to
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:
Which of the following statements is true for the H₃PO₃ molecule?
The true statement for the acids of phosphorus, H₃PO₂, H₃PO₃ and H₃PO₄ is
Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?