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