Chapter 3
Group 3A and Group 4A elements
Test - 1


Chemistry Class 12
1.    ___________ is the third most abundant element in the earths crust.




Chemistry Class 12
2.    Boric acid in used in medicines as an _______________.




Chemistry Class 12
3.    Carbon and __________ are the only non-metals in group IVA.




Chemistry Class 12
4.    ______________% of the mass of the earths crust being due to the silicon.




Chemistry Class 12
5.    China wares are made from a mixture of Kaolin, bone ash and ___________.




Chemistry Class 12
6.    Calumniate is the common mineral of ________________.




Chemistry Class 12
7.    _______________ is used for the identification of coloured salts.




Chemistry Class 12
8.    Oxides of lead are used as ___________.




Chemistry Class 12
9.    Cryolite is an important mineral of aluminum and its formula is ____________.




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