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