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