Chemistry Question Bank

Gold reacts with aqua regia forming

White phosphorus reacts with concentrated HNO₃ to give

Ozone is an extremely powerful oxidizing agent. It is

Phosphorus reacts with concentrated HNO₃ to produce

Platinum reacts with aqua regia to produce chloroplatinic acid represented by the formula

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 oxides of nitrogen is a mixed anhydride of two acids?

FeSO₄ is a very good absorber for NO. The number of unpaired electrons in the new compound formed by this process is

Liquid N₂O₄ self-ionizes as

A solution of sodium in liquid ammonia is blue due to the presence of

In NO ion, the number of bond pairs and lone pair of electrons on nitrogen atom are

Which of the following reactions gives reasonably pure NO?

Which of the following oxides of nitrogen is solid?

N₂ is commercially prepared by

Which of the following reactions is used in the preparation of N₂?

Which of the following forms strong p - p bonding

Ammonia gas can be dried by

Which of the following gases is the least reactive?

At present, HNO₃ is industrially prepared by the

At room temperature, O₃ is absorbed by

Ammonia, on reaction with excess of chlorine, gives :

Which of the following compounds is thermodynamically unstable?

Which of the following halides of nitrogen is stable?

The tendency of nitrogen halides to act as Lewis bases decreases in the order

Which one of the following compounds is most explosive?