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