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In text Questions page number 53
Question 1. Define the following terms.
(i) Mineral (ii) Ore (iii) Gangue
Answer:
Mineral: The naturally occurring compounds of elements are known as Mineral.
Ore: The mineral from which element can be extracted easily and profitably is called an ore.
Gangue: The impurities present in the ore such as sand, rocks etc are non as gangue.
Question 2. Name two metals which are found in nature in the free state.
Answer: Gold and Platinum
Question 3. What chemical process is used for obtaining a metal from its oxide?
Answer: A metal can be extracted from its oxide by the process of reduction
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