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The hottest part of the flame of a Bunsen burner is the:

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Important Questions on General Principles and Processes of Isolation of Metals (Metallurgy)

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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 1
Which of the following solids are not correctly matched with the bonds found between the constituent particles?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 3
Which is not correct statement?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 4
Bauxite is leached with:
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 6
Which one of the following is not a method of concentration of ore?
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 7
The metal which mainly occurs as oxide ore in nature is :
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 8
The reason, for floating of ore particles in concentration by froth floatation process is that
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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 9

Choose the correct option using the code regarding the roasting process:

I It is the process of heating the ore in the air in a reverberatory furnace to obtain the oxide.

II It is an exothermic process.

III It is used for the concentration of sulphide ore.

IV It removes easily oxidisable volatile impurities present in the concentrated ore.

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Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-2>Q 10
Select the correct statement for the decomposition of metal oxide into solid/liquid metal and oxygen?