Odisha Board Solutions for Chapter: Group-13 Elements, Exercise 2: MULTIPLE CHOICE TYPE

The most covalent aluminium halide is 

Which of the following compounds can make cloth fireproof?

Aqueous solution of borax is 

The blue coloured minerals 'Lapiz Lazuli' which is used as a semi-precious stone is a mineral of the following class:

Which of the following is an ore of aluminium?

The structure of diborane $\left({\mathrm{B}}_2{\mathrm{H}}_6\right)$ contains

The states of hybridisation of boron and oxygen atoms in boric acid $\left({\mathrm{H}}_3{\mathrm{BO}}_3\right)$ are respectively

Beryllium and aluminium exhibit many properties which are similar. But the two elements differ in