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