19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Gold reacts with aqua regia forming
Which of the following inert gas participate in chemicals reaction? (AIIMS 2019)
In how many of the following number of lone at central atom is zero XeO3, XeO2F2, XeO4, XeO3F2, XeO3F6 ? (AIIMS2019)
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+
Which of the following rare gas is the abundant in air? (JIPMER 2019)
Identify the incorrect statement related to PCl5 from the following: (NEET 2019)
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
A solution of sodium in liquid ammonia is blue due to the presence of
Ammonia, on reaction with excess of chlorine, gives :
A green yellow gas reacts with an alkali metal hydroxide to form a halite which can be used in fireworks and safety matches. The gas and halite are, respectively (AIIMS 2019)
Which of the following oxoacids of phosphorus has strongest reducing property? (NEET (Odisha)2019)
A compound ‘X’ upon reaction with H2O produced a colourless gas ‘Y’ with rotten fish smell. Gas ‘Y’ is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. Predict the compound ‘X’ (NEET (Odisha)2019)
What is X and Y in the above reaction? (AIIMS 2019) (Excess) (Excess) 8NH 3Cl X NH 3Cl Y -> ->
Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy? (AIIMS 2019)
Which of the following oxyacid does not contain P–O– P bond? (AIIMS 2018)