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