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