Chemistry Question Bank

NaBH₄ + I₂ ® X + Y + Z BF₃ + NaH 450 K ¾¾¾® X + P BF₃ + LiAlH₄ ® X + Q + R X, Y, Z, P, Q and R in the reactions are X Y Z P Q R (a) Na₄B₄O₇ NaI HI HF LiF AlF₃ (b) B₂H₆ NaI H₂ NaF LiF AlF₃ (c) B₂H₆ BH₃ NaI B₃N₃H₆ Al₂F₆…

Boron cannot form which one of the following anions? (a) BF⁻ (b) BH⁻

AlCl₃ on hydrolysis gives:

Which one of the following is the correct statement ?

From B₂H₆, all the following can be prepared except:

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

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

Which of the following oxides of nitrogen is solid?

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⁺

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…

Ammonia gas can be dried by

Ammonia, on reaction with excess of chlorine, gives :

Which of the following oxides of nitrogen is a mixed anhydride of two acids?

Liquid N₂O₄ self-ionizes as

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

Which of the following forms strong p - p bonding

N₂ is commercially prepared by

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

Which of the following gases is the least reactive?

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

Small quantities of very pure N₂ is obtained by carefully warming

Which of the following halides of nitrogen is stable?

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