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Fill in the Blanks: General Principles & Processes of Isolation of Elements | JEE Advanced - Notes | Study Chemistry 35 Years JEE Main & Advanced Past year Papers - JEE

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Fill in the Blanks

1. Casseterite is ore of ........... (1980)
 Ans : 
Tin

Solution :  Tin. It is SnO2. [The formula of Casseterite ore in SnO2

 

2. In the thermite process ........ is used as reducing agent. (1980)
 Ans : 
Aluminium

Solution : Fe2O3 + 2Al → Al2O3 + 2Fe + Heat

[Thermite reaction]

 

3. In the basic Bessemer process for the manufacture of steel the lining of the converter is made of ........ . The slag formed consists of ...... (1980)
 Ans : 
Magnesia and lime; Calcium silicate

Solution : NOTE : The lining of corverter is made of magnesia & lime. Slag formed consists of CaSiO3

 

4. In extractive metallurgy of zinc partial fusion of ZnO with coke is called ............... and reduction of the ore to the molten metal is called ............... .
 (smelting, calcining, roasting, sintering) (1988 - 1 Mark)

Ans : sintering, smelting

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