19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The number of P—O—P bonds in cyclic metaphosphoric acid is
The number of P–O–P bonds in the structure of phosphorus pentoxide and phosphorus trioxide are respectively (2005)
Which of the following compounds consists of a P–P linkage?
Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?
The true statement for the acids of phosphorus, H3PO2, H3PO3 and H3PO4 is
Which of the following structures represents hypophosphoric acid? (a) (b) (c) (d)
Which of the following statements is true for the H3PO3 molecule?
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:
Syrupy H3PO4 is viscous due to
White phosphorus reacts with concentrated HNO3 to give
Solid PCl5 exists as
PH3 and NH3 on separate reaction with bleaching powder produce respectively
PCl5 on hydrolysis gives
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 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