Group IIIA and Group IVA elements in the periodic table include metals, metalloids, and nonmetals. Group IIIA consists of boron, aluminum, gallium, and thallium, while Group IVA includes carbon, silicon, germanium, tin, and lead. These elements play crucial roles in various chemical and industrial processes.
Class 12 Chemistry Chapter 3 Notes
Which metal is used in the thermite process because of its activity: Aluminium
Boric acid cannot be used: In soda bottles
Aluminium oxide is: Amphoteric oxide
Tincal is a mineral of: B
Which element form an ion with charge +3: Aluminum
Which of the following elements is not present abundantly in earth’s crust: Sodium
Aluminum reacts with nitrogen to form: AIN
—— element forms an ion with charge 3+: Aluminium
#NAME: Aluminium
The aqueous solution of Borax: alkaline
The chief of aluminum is: Al2O3.2H2O
Which one of following is used in cosmetics: Talc
Kaolin is a mineral of: Aluminium
Aluminum oxide is: amphoteric oxide
Which electronic configuration corresponds to an element of group III-A of the Periodic Table: 1s2,2s2,2p6,3s2,3p1
Chemical composition of colemanite is: Ca2B6O11. 5H2O
Which is used in the leather industry: Borax
Tincal is a mineral of: B
Which of the following elements is not present abundantly in earth’s crust: Sodium
Which are correct oxidation states for lead: +2 ,+4
Boric acid is used as eye wash due to its: Antiseptic nature
Aluminium does not corrode because: It forms a protective layer of Al2O3
Third abundant element on earth crust is: Aluminium
Which is not used of Borax: To make quartz
The shape of SiO2 IS: Tetrahedral
Ethyl alcohol on reacting with orthoboric acid form: Ethyl borate
Which of the following elements is not present abundantly in earth’s crust: Sodium
Important : Review all previous years’ 12 class past papers for comprehensive practice and better exam preparation.