19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
White phosphorus reacts with concentrated HNO₃ to give
Which of the following statements is true for the H₃PO₃ molecule?
PCl₅ on hydrolysis gives
PH₃ and NH₃ on separate reaction with bleaching powder produce respectively
The true statement for the acids of phosphorus, H₃PO₂, H₃PO₃ and H₃PO₄ is
Solid PCl₅ exists as
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
H₂S is less stable than H₂O because
White phosphorus reacts with NaOH to give PH₃ and NaH₂PO₂. This reaction involves
Which of the following is not a peroxyl acid? (Manipal 2012)
Acidity of diprotic acids in aqueous solutions increases in the order (CBSE AIPMT 2014)
Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?
Ammonia gas can be dried by
Ammonia, on reaction with excess of chlorine, gives :
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…
A solution of sodium in liquid ammonia is blue due to the presence of
Small quantities of very pure N₂ is obtained by carefully warming
Which of the following compounds does not give N₂ on heating?
In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are
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
An aqueous solution of ammonia consists of