No. of questions - 33
Time - 15 min
1.
Which of the following mineral does not contain Al?
2.
Cyanide process is used in the extraction of
3.
Which among the following has highest electrical conductivity?
4.
Alloy formation gives rise to:
5.
Which is incorrect as the uses of lime stone in industries are concerned?
6.
Mispickel is the ore of:
7.
The method of zone refining of metals is based on the principle of
8.
Stainless steel has iron and
9.
Iron ores are dressed by:
10.
Which is not a mineral of aluminium?
11.
An essential constituent of amalgam is:
12.
The process in which ore is heated in air below its melting point is known as:
13.
Slag coming out at the bottom of a blast furnace during extraction of iron from its ores, is used in making:
14.
When pyrolusite is fused with KOH in presence of air, the fused mass becomes:
15.
Mercury is transported in mental containers made up of:
16.
Pentalandite is an ore of:
17.
Blood haemoglobin contains:
18.
Refractory materials are used for the construction of furnaces because they:
19.
Which of the following is a carbonate ore?
20.
Which element is present in pitch blende?
21.
In alumino-thermite process, aluminium is used as
22.
Main ore of aluminium is:
23.
Which is not a mineral?
24.
In blast furnace, the cup and cone arrangement is used:
25.
The matte is impure substance obtained during extraction of:
26.
The existence of two or more crystalline forms of the same substance is called:
27.
Wolframite ore is separated from tin stone ore by the process of
28.
Platinum, palladium, indium, etc., are called noble metals because:
29.
Which process is used for the purification of Al metal?
30.
Forth floatation process for the concentration of the ores is an illustration of the practical application of
31.
Which process is used for the extraction of metals from their sulphide ores?
32.
Which metal occurs in free state?
