Chemical Industries

A mixture of Cu₂S and FeS called matte is produced in one of the metallurgical operations in the extraction of copper. The name of this operation is:

 
 
 
 

Calcination is the process in which sodium hydrogen carbonate is heated to get sodium carbonate. Which is not obtained in this process?

 
 
 
 

Which of the following is the primary component of natural gas?

 
 
 
 

The process of separating components of a mixture based on their boiling points is called:

 
 
 
 

Which of the following is not an example of a non-metal?

 
 
 
 

In electrolytic refining of copper, _______ is used as anode.

 
 
 
 

The formula of sodium bicarbonate is:

 
 
 
 

Which of the following steps is not used in the extraction process of metals?

 
 
 
 

Chemical formula of slaked lime is

 
 
 
 

The compound that is commonly known as quicklime is:

 
 
 
 

What happens when ammonium carbamate is distilled with steam?

 
 
 
 

Which of the following is an example of an acid used in the laboratory?

 
 
 
 

Which of the following is used to test the presence of hydrogen gas?

 
 
 
 

The separation of minerals from gangue is called concentration. Which of the following methods is used for concentration?

 
 
 
 

Which of the following metals is commonly used for making electrical wires?

 
 
 
 

Percentage of nitrogen in urea is

 
 
 
 

The naturally occurring metallic compounds are called as

 
 
 
 

The process of removing impurities from crude oil is known as:

 
 
 
 

Which of the following is not a raw material for the manufacture of soda ash?

 
 
 
 

Question 1 of 19

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  5. ORGANIC CHEMISTRY
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  12. State Le-Chatelier’s principle.
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