Aqueous solution of borax is 

Important Questions on Group-13 Elements

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 14 - Group-13 Elements>MULTIPLE CHOICE TYPE>Q 20

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

EASY

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 14 - Group-13 Elements>MULTIPLE CHOICE TYPE>Q 21

Which of the following is an ore of aluminium?

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 14 - Group-13 Elements>MULTIPLE CHOICE TYPE>Q 22

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

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 14 - Group-13 Elements>MULTIPLE CHOICE TYPE>Q 23

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

MEDIUM

11th Odisha Board

IMPORTANT

Bureau's Higher Secondary Chemistry Volume-1>Chapter 14 - Group-13 Elements>MULTIPLE CHOICE TYPE>Q 24

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