MEDIUM
10th CBSE
IMPORTANT
Earn 100

Match column A with column B and select the correct option:            

Column A (Ore)   Column B (Nature of ore)
(A) Copper glance  (i) Sulphate ore
(B) Calamine    (ii) Halide ore
(C) Rock salt  (iii) Sulphide ore
(D) Epsom salt  (iv) Carbonate ore

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Important Questions on Metals and Non-metals

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE Chemistry For Class X>Chapter 3 - Metals and Non-metals>Exercise 9>Q 25
Removal of impurities from ore is known as _____.
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?