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1.
Platinum, palladium, indium, etc., are called noble metals because:
2.
Match the extraction process listed in column I with metals listed in column II.
Column I Column II
A. Self reduction (P) Lead
B. Carbon reduction (Q) Silver
C. Complex formation and (R) Copper
displacement by metal
D. Decomposition of iodide (S) Boron
Column I Column II
A. Self reduction (P) Lead
B. Carbon reduction (Q) Silver
C. Complex formation and (R) Copper
displacement by metal
D. Decomposition of iodide (S) Boron
3.
Mercury is transported in mental containers made up of:
4.
Which is not a mineral?
5.
Slag coming out at the bottom of a blast furnace during extraction of iron from its ores, is used in making:
6.
The process in which ore is heated in air below its melting point is known as:
7.
When pyrolusite is fused with 
in presence of air, the fused mass becomes:
in presence of air, the fused mass becomes:
8.
Which process is used for the purification of 
metal?
metal?
9.
Which is incorrect as the uses of lime stone in industries are concerned?
10.
The method of zone refining of metals is based on the principle of