EASY
10th CBSE
IMPORTANT
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Removal of impurities from ore is known as _____.

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Important Questions on Metals and Non-metals

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 26
Which of the following methods is used in the concentration of haematite ore?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 27
Froth flotation method is used for the concentration of _____.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 28
Which of the following methods is based on the principle of the difference in the wetting properties of the ore and gangue particles with water and oil?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 29
Heating of concentrated ore in absence of air for conversion in oxide ore is known as _____.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 30
Process of roasting and calcination takes place in _____ .
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 31
Which of the following is used in reduction of alumina?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 32
For purification of which metal, Liquation method is used?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 33
Which method is used in purification of mercury?