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