An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal. For example: • Stainless steel is an alloy of Nickel and Chromium. • Amalgam is an alloy of Mercury. • Brass is an alloy of Copper and Zinc. • Bronze is an alloy of Copper and Tin. • Solder is an alloy of Lead and TRead more
An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal.
For example:
• Stainless steel is an alloy of Nickel and Chromium.
• Amalgam is an alloy of Mercury.
• Brass is an alloy of Copper and Zinc.
• Bronze is an alloy of Copper and Tin.
• Solder is an alloy of Lead and Tin.
The metals which are the least reactive, do not corrode easily. For example: Gold, silver, platinum and copper. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
The metals which are the least reactive, do not corrode easily.
For example:
Gold, silver, platinum and copper.
•Metals low in the activity series are very unreactive. The oxides of these metals can be reduced to metals by heating alone. 2HgO(s) → 2Hg(l) + O(g) •The metals in the middle of the activity series such as iron, zinc, lead, copper, etc., are moderately reactive. These metal oxides are reduced to thRead more
•Metals low in the activity series are very unreactive. The oxides of these metals can be reduced to metals by heating alone.
2HgO(s) → 2Hg(l) + O(g)
•The metals in the middle of the activity series such as iron, zinc, lead, copper, etc., are moderately reactive. These metal oxides are reduced to the corresponding metals by using suitable reducing agents
ZnO(s) + C(s) → Zn(s) + CO(g)
•The metals high up in the reactivity series are very reactive. They are separated from their oxides by electrolysis process.
The metals which are the least reactive, they are often found in a free state. For example: Gold, silver, platinum and copper are found in the free state. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
The metals which are the least reactive, they are often found in a free state.
For example:
Gold, silver, platinum and copper are found in the free state.
(i) Mineral The elements or compounds, which occur naturally in the earth’s crust, are known as minerals. (ii) Ore If minerals contain a very high percentage of a particular metal and the metal can be profitably extracted from it. These minerals are called ores. (iii) Gangue Ores mined from the eartRead more
(i) Mineral The elements or compounds, which occur naturally in the earth’s crust, are known as minerals.
(ii) Ore
If minerals contain a very high percentage of a particular metal and the metal can be profitably extracted from it. These minerals are called ores.
(iii) Gangue
Ores mined from the earth are usually contaminated with large amounts of impurities such as soil, sand, etc., called gangue.
What are alloys?
An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal. For example: • Stainless steel is an alloy of Nickel and Chromium. • Amalgam is an alloy of Mercury. • Brass is an alloy of Copper and Zinc. • Bronze is an alloy of Copper and Tin. • Solder is an alloy of Lead and TRead more
An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal.
For example:
• Stainless steel is an alloy of Nickel and Chromium.
• Amalgam is an alloy of Mercury.
• Brass is an alloy of Copper and Zinc.
• Bronze is an alloy of Copper and Tin.
• Solder is an alloy of Lead and Tin.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
Which metals do not corrode easily?
The metals which are the least reactive, do not corrode easily. For example: Gold, silver, platinum and copper. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
The metals which are the least reactive, do not corrode easily.
For example:
Gold, silver, platinum and copper.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
What chemical process is used for obtaining a metal from its oxide?
•Metals low in the activity series are very unreactive. The oxides of these metals can be reduced to metals by heating alone. 2HgO(s) → 2Hg(l) + O(g) •The metals in the middle of the activity series such as iron, zinc, lead, copper, etc., are moderately reactive. These metal oxides are reduced to thRead more
•Metals low in the activity series are very unreactive. The oxides of these metals can be reduced to metals by heating alone.
2HgO(s) → 2Hg(l) + O(g)
•The metals in the middle of the activity series such as iron, zinc, lead, copper, etc., are moderately reactive. These metal oxides are reduced to the corresponding metals by using suitable reducing agents
ZnO(s) + C(s) → Zn(s) + CO(g)
•The metals high up in the reactivity series are very reactive. They are separated from their oxides by electrolysis process.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
Name two metals which are found in nature in the free state.
The metals which are the least reactive, they are often found in a free state. For example: Gold, silver, platinum and copper are found in the free state. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
The metals which are the least reactive, they are often found in a free state.
For example:
Gold, silver, platinum and copper are found in the free state.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/
Define the following terms.
(i) Mineral The elements or compounds, which occur naturally in the earth’s crust, are known as minerals. (ii) Ore If minerals contain a very high percentage of a particular metal and the metal can be profitably extracted from it. These minerals are called ores. (iii) Gangue Ores mined from the eartRead more
(i) Mineral The elements or compounds, which occur naturally in the earth’s crust, are known as minerals.
(ii) Ore
If minerals contain a very high percentage of a particular metal and the metal can be profitably extracted from it. These minerals are called ores.
(iii) Gangue
Ores mined from the earth are usually contaminated with large amounts of impurities such as soil, sand, etc., called gangue.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-3/