No. of questions - 33
Time - 15 min
1.
Wolframite ore is separated from tin stone ore by the process of
2.
Forth floatation process for the concentration of the ores is an illustration of the practical application of
3.
The existence of two or more crystalline forms of the same substance is called:
4.
Main ore of aluminium is:
5.
Mercury is transported in mental containers made up of:
6.
Blood haemoglobin contains:
7.
Which metal occurs in free state?
8.
In alumino-thermite process, aluminium is used as
9.
Which of the following is a carbonate ore?
10.
An essential constituent of amalgam is:
11.
Which process is used for the purification of Al metal?
12.
Mispickel is the ore of:
13.
Refractory materials are used for the construction of furnaces because they:
14.
Which of the following mineral does not contain Al?
15.
Which element is present in pitch blende?
16.
Stainless steel has iron and
17.
Which among the following has highest electrical conductivity?
18.
Which is incorrect as the uses of lime stone in industries are concerned?
19.
The process in which ore is heated in air below its melting point is known as:
20.
The matte is impure substance obtained during extraction of:
21.
When pyrolusite is fused with KOH in presence of air, the fused mass becomes:
22.
Which is not a mineral of aluminium?
23.
Iron ores are dressed by:
24.
Which is not a mineral?
25.
Cyanide process is used in the extraction of
26.
The method of zone refining of metals is based on the principle of
27.
In blast furnace, the cup and cone arrangement is used:
28.
Pentalandite is an ore of:
29.
Which process is used for the extraction of metals from their sulphide ores?
30.
Slag coming out at the bottom of a blast furnace during extraction of iron from its ores, is used in making:
31.
Platinum, palladium, indium, etc., are called noble metals because:
32.
Alloy formation gives rise to:
