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