Chemistry Question Bank

The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration ? (NEET 2017)

Which of the following is a false statement ?

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

Na₂B₄O₇.10H₂O is correctly represented as:

Which one is the wrong statement ?

Which one of the following is the correct statement ?

The correct order of atomic radii in group 13 elements is (NEET 2018)

The structure of diborane (B₂H₆) contains :

Borax is used as a cleansing agent because on dissolving in water, it gives (RPMT 2010)

In B₂H₆:

On hydroloysis, diborane produces

Graphite is a good conductor of electricity. Its electrical conductivity is due to the fact that (CPMT 2010)

Borazole, B₃N₃H₆ is related to benzene as:

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:

Boric acid has a polymeric layer structure in which planar BO₃ units are joined by

The stability of +1 oxidation state increases in the sequence (AIPMT 2009)

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

Which of the following is not attacked by hot sodium hydroxide solution? (Manipal 2010)

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…

The number of OH units directly linked to boron atoms in Na₂B₄O₇.10H₂O is:

Which is the hardest compound of boron ?

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…

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