EASY
10th CBSE
IMPORTANT
Earn 100

Define the terms, mineral, ore and gangue as used in metallurgical operations.

Important Questions on Metals And Non-Metals

HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 4
Describe with a labelled diagram, the method of concentration of a sulphide ore.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 4
Differentiate between roasting and calcination.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 5
What method for concentration of ore is preferred in each of the following cases and why?
(i) The ore has higher density particles interspersed with a large bulk of low density impurities.
(ii) The ore consists of copper sulphide intermixed with clay particles.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 5
Give an example of amalgam.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 6
Define the terms "alloy" and "amalgam". Name the alloy used for welding electric wires together. What are its constituents?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 6
Name the constituents of the following alloys: (a) Brass, (b) Stainless steel, (c) Bronze. State one property in each of these alloys that is different from its main constituents.
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 7
Differentiate between an 'alloy' and an 'amalgam'. How are alloys made? State with examples any two properties in which an alloy may be different from those of its constituents. Write the constituents and special advantages of: (i) stainless steel, (ii) magnalium
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3D>Q 8
Describe with examples the following steps associated which the extraction of metals from their ores:
(i) Froth-floatation process, (ii) Roasting of an ore, (iii) Calcination of an ore.