Chemistry Question Bank

In Cyanide extraction process of silver from argentite ore, the oxidizing and reducing agents are respectively. (JIPMER 2017)

In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu₂O with (JIPMER 2018)

Which one is malachite from the following? (NEET 2019)

Identify the correct statement from the following: (NEET 2020)

Identify the ore not containing iron. (UP CPMT 2012)

In the froth-floatation process, the ore particles float because

In the froth-floatation process, the sulphide ores are concentrated by mixing the ore with

Chemical leaching is useful in the concentration of:

An element whose electronic configuration is 4s13d10. The possibility of element is

Which of the following statements is correct?

The impurities present in a mineral are called

Among the following, the most abundant metal in the earth’s crust is

The metal which mainly occurs as oxide ore in nature is:

Silicon is the main constituent of

Concentration of ores is not done by the

Sulphide ores are generally concentrated by the

In the froth floatation process for benefaction of the ores, the ore particles float because

Which one of the following ores is best concentrated by froth floatation method?

Flux is used to remove:

Calcination of ores involves heating the ore below its fusion temperature

Roasting or ores is done

The metal which is extracted by electrolytic reduction is

Which of the following metals is obtained by electrolytic reduction process:

Heating with carbon in absence of air is known as :

Which of the following metals cannot be extracted by the carbon reduction process?