19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following gases is the least reactive?
An aqueous solution of ammonia consists of
Which of the following oxides is the most acidic?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following is the increasing order of enthalpy of vaporization?
Which one of the following compounds is most explosive?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
Which of the following halides of nitrogen is stable?
Among the following, the element that does not show allotropy is
The element which forms oxides in all oxidation states +I to + V is :
The most stable oxidation states of nitrogen are
The best reducing agent among the following is
Which of the following compounds does not form ammonia on heating?
N2 is passed through overheated CaC2. Which of the following options is correct for the product formed? (I) State of hybridization of C is sp. (II) Urea is an intermediate formed during hydrolysis of the above product…
Which of the following compounds give NH3 on heating? (I) NH4NO3 (II) NH4NO2 (III) (NH4)2 Cr2O7 (IV)(NH4)2CO3 (V) Mg (NH4) PO4
Pure nitric acid is a colourless liquid, but on exposure to light it turns brownish due to
When AgNO3 is heated strongly above 800°C, it produces
In the cationic parts of solid N2O5 and solid N2O4, the bond order of N–O are, respectively,
NH4NO2 NH4NO2 on heating gives
Phosphorus is obtained by
White phosphorus on reaction with limewater gives calcium salt of an acid (A) along with a gas (X). Which of the following is correct?
White phosphorus reacts with calcium to give a certain compound. This compound on hydrolysis produces
Which is not correct regarding the Holme’s signal?
Which of the following does not have S—S linkage? (a) S O (b) S O (c) S O (d) S O
The number of S—S bonds in sulphur trioxide trimer S3O9 is: