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