Updated By SaraNextGen
On April 21, 2024, 11:35 AM
Page No 55: - Chapter 3 Metals & Non Metals class 10 ncert solutions Science - SaraNextGen [2024-2025]
|
Metal |
Zinc |
Magnesium |
Copper |
|
Zinc oxide |
– |
– |
– |
|
Magnesium oxide |
– |
– |
– |
|
Copper oxide |
– |
– |
– |
Question 1:
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
In which cases will you find displacement reactions taking place?
Answer:
|
Metal |
Zinc |
Magnesium |
Copper |
|
Zinc oxide |
No reaction |
Displacement |
No reaction |
|
Magnesium oxide |
No reaction |
No reaction |
No reaction |
|
Copper oxide |
Displacement |
Displacement |
No reaction |
Question 2:
Which metals do not corrode easily?
Answer:
More reactive a metal is, more likely it is to be corroded. Therefore, less reactive metals are less likely to get corroded. This is why gold plating provides high resistance to corrosion.
Question 3:
What are alloys?
Answer:
Alloys are homogeneous mixtures of two or more elements. The elements could be two metals, or a metal and a non-metal. An alloy is formed by first melting the metal and then dissolving the other elements in it. For example, steel is an alloy of iron and carbon.
Also Read : Page-No-56:-Chapter-3-Metals-&-Non-Metals-class-10-ncert-solutions-Science
