Chemistry Question Bank

Which of the following is correct?

Heating an aqueous solution of aluminium chloride to dryness will give

Which one is the wrong statement ?

Aluminium chloride exists as dimer, Al₂Cl₆ in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives

Anodised aluminium is :

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

From B₂H₆, all the following can be prepared except:

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 statement is true for the above sequence of reactions?

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:

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

Which of the following is a false statement ?

Na₂B₄O₇.10H₂O is correctly represented as:

The blue coloured mineral ‘Lapis Lazuli’ which is used as a semi-precious stone is a mineral of the following class:

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

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

The basic structural unit of silicates is (NEET 2013)

Which one of the following is the correct statement ?

BCl₃ does not exist as a dimer but BH₃ exists as B₂H₆ because

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

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

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

The power of halides of boron to act as Lewis acids decreases in the order:

What are X and Y in the reaction ? heat 3B H 6X 3[BH (X) ] [BH ] Y 12H + - + ® ¾¾¾® +

Which of the following is not matched correctly with its use ?