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