HARD
12th Odisha Board
IMPORTANT
Earn 100

With respect to Ellingham diagram, explain that Al acts as a better reducing agent than Fe.

Important Questions on General Principles and Processes of Isolation of Elements

HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 17
With respect to Ellingham diagram, explain that extraction of metals like Ag and Hg from their oxides take place at high temperature.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 1
Sulphide ores are generally concentrated by _____ process.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 2
The process of heating the ore in the absence or limited supply of air is called _____.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 4
Minerals from which the metal can be extracted economically are called _____.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 7
Coke used during the smelting of iron acts as a fuel as well as a _____ agent.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 8
Substances used during smelting to remove gangue in the form of slag is called _____.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 9
The flux combine with the gangue to form a fusible mass called _____.
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Chemistry Volume-2>Chapter 6 - General Principles and Processes of Isolation of Elements>QUESTIONS>Q 10
The process of purification of metals to get extra-pure metals is known as _____.