19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements is correct regarding the behaviour of white phosphorus?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
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
The number of lone pairs and the number of S—S bonds in S8 molecules are respectively:
Which of the following has pπ – dπ bonding ? (a) NO (b) SO (c) BO (d) CO
In ozone, the central oxygen atom uses
Which of the following statements is correct for sulphur?
H2S turns an acidified K2Cr2O7 solution
H2S turns an acidified KMnO4 solution
Which of the following compounds is thermodynamically unstable?
H2S is less stable than H2O because
Which one of the following compounds is most explosive?
Which of the following is the increasing order of enthalpy of vaporization?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following oxides is the most acidic?
An aqueous solution of ammonia consists of
Sulphur dioxide reacts with chlorine in the presence of charcoal (which acts as a catalyst) to give
Which of the following gases may act both as an oxidizing and a reducing agent?
White phosphorus is more reactive than N2 because
Dehydration of concentrated H2SO4 in the presence of P4O10 produces
Which of the following gases is the least reactive?
Phosphorus reacts with concentrated HNO3 to produce
Iodine reacts with concentrated HNO3 to produce
Which of the following halides of nitrogen is stable?