Chemistry Question Bank

Boric acid is an acid because its molecule (NEET 2016)

Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is not fomed in these conditions?

Which one is the wrong statement ?

When strongly heated, orthoboric acid leaves a residue of:

From B₂H₆, all the following can be prepared except:

Na B O X H BO . + ® What is X in the reaction ?

In graphite, C atom is in .......... state.

A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form ‘A’ and HCl. ‘A’ is mixed with NH₃ and heated to 200 °C to form ‘B’. The formula of ‘B’ is:

Al₂O₃ formation from aluminium and oxygen involves evolution of a large quantity of heat, which makes alu- minium used in:

Which of the following is a false statement ?

Na₂B₄O₇.10H₂O is correctly represented as:

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

AIF₃ is soluble in HF only in presence of KF. It is due to the formation of

Which of the statement is true for the above sequence of reactions?

Borazole, B₃N₃H₆ is related to benzene as:

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

In B₂H₆:

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…

Boric acid H₃BO₃ and BF₃ have the same number of elec- trons. The former is a solid and the latter is a gas. The reason is:

H₃BO₃ is:

The structure of diborane (B₂H₆) contains :

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

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

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 is the hardest compound of boron ?