How carnallite ore is made anhydrous?

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

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 6

What is the role of a stabiliser in the froth-floatation process?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 7

Out of C and CO, which is a better reducing agent for $\mathrm{ZnO}?$

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 8

Why the $\mathrm{HgO}$ decompose into its constituent elements on heating?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 9

Cinnabar $\left(\mathrm{HgS}\right)$ and galena $\left(\mathrm{PbS}\right)$ on roasting often give their respective metals but zinc blende $\left(\mathrm{ZnS}\right)$ does not. Explain.

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 11

In the extraction of tin from tin stone addition of excess lime stone should be avoided. Why ?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 12

In the extraction of lead from galena lime stone is added, why?

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 13

Why excess of carbon is added in the zinc metallurgy?

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 18 - General Principles and Processes of Isolation of Metals (Metallurgy)>Exercise-1>Q 15

State the role of silica in the metallurgy of copper.