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⁻

Which one of the following is the correct statement ?

Na₂B₄O₇.10H₂O is correctly represented as:

The structure of diborane (B₂H₆) contains :

In B₂H₆:

Borazole, B₃N₃H₆ is related to benzene as:

H₃BO₃ is:

Boric acid is used in carrom boards for smooth gliding of pawns because:

Alumina is:

Darkening of surface painted with white lead is due to (CPMT 2009)

Which of the following compounds is known as inor- ganic benzene?

Which of the following statements about anhydrous alu- minium chloride is correct?

Which is the hardest compound of boron ?

Identify X and Y in the following reaction. NaBH 140ºC C H Cl BCl NH Cl X Y + ¾¾¾¾® ¾¾¾¾®

Which of the following compounds are formed when BCl₃ is treated with water ?

The exhibition of highest co-ordination number depends on the availability of vacant orbitals in the central atom. Which of the following elements is not likely to act as central atom in MF - ?

Which one of the following statements regarding BF₃ is not correct?

BF₃ is used as catalyst in several industrial processes due to its:

The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in [B(OH)₄]– and the geometry of the complex a…

Which of the following compounds are formed when boron trichloride is treated with water?

The main factor responsible for weak acidic nature of B—F bonds in BF₃ is:

Boron is unable to form BF - ions due to

When aluminium hydroxide dissolves in NaOH solution, the product is:

Which of the following hydroxides is acidic ?