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
On boiling phosphorus with KOH solution, product formed is
The reaction of P4 with X leads selectively to P4O6. The X is:
The percentage of p-character in the orbitals forming P–P bonds in P4 is:
Which of the following statements is correct regarding the behaviour of white phosphorus?
Red phosphorus is less reactive than white phosphorus because (a)the P—P bond length is greater in red phosphorus
The most stable allotropic form of phosphorus is
White phosphorus is more reactive than N2 because
White phosphorus is kept under
Which of the following statements is correct?
Which one of the following is not an ore of phosphorus?
Platinum reacts with aqua regia to produce chloroplatinic acid represented by the formula
Gold reacts with aqua regia forming
Iodine reacts with concentrated HNO3 to produce
Phosphorus reacts with concentrated HNO3 to produce
At present, HNO3 is industrially prepared by the
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