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