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Why is gold and silver used for jewellery Class 8?
Answer: (a) Platinum, gold and silver are used to make jewellery because these are low reactive metals so rarely corrosion occur (In silver) and hence do not lost their shine and lustre.
Why is gold used for making jewellery?
gold is used to make jewellery because of the attractiveness of its lustre and because of its rarity. it also does not tarnish and does not react with air the way a metal like iron does. gold is malleable, which means it can be beaten into very thin sheets.
Why is gold used to make jewellery Class 8?
Class 8 Question Gold is preferred in making jewelry because it does not react with atmospheric moisture and rust.It has a stable market value that is almost always rising. It is very malleable able to be shaped into many ornate patterns.
What is silver used to make?
It is used for jewellery and silver tableware, where appearance is important. Silver is used to make mirrors, as it is the best reflector of visible light known, although it does tarnish with time. It is also used in dental alloys, solder and brazing alloys, electrical contacts and batteries.
What is used to make jewellery?
Gold, silver and platinum are usually used in making jewellery because of their properties of being metals.
Why is gold used for making jewellery Why is 24 carat gold not used for making jewellery?
Since ornaments in their making are required to be held tightly onto a diamond or allied precious stones, 24-karat gold is not used for making jewellery because of its softness. Thanks to the ductility and malleability of 24-karat gold, it can easily be deformed and lose its grip on a jewel.
How is gold used in manufacturing?
The most important industrial use of gold is in the manufacture of electronics. Solid state electronic devices use very low voltages and currents which are easily interrupted by corrosion or tarnish at the contact points. A small amount of gold is used in almost every sophisticated electronic device.
Why are gold and silver used to make jewellery?
Platinum Gold and silver are used to make jewellery because of the following reasons. They are highly lustrous metals which are resistant to corrosion. They are highly malleable and ductile so can be transformed into any shape or design.
What metals are used to make jewelry?
Any kind of metal that does not rust or corrode can be used to make jewelry, which includes stainless steel, copper, silver, gold, platinum, iridium, etc. Of course, stainless steel jewelry is much less expensive and less impressive than gold or platinum jewelry. What is one of the two elements that start with an A that are used in jewelry?
Is silver suitable for jewellery?
Silver makes beautiful jewellery but some of its properties are not suitable for certain types of jewellery. It is not as hard wearing for example as 9ct Gold or Platinum. Silver is chosen for jewellery because historically Silver is deemed to be a precious and beautiful metal.
Which metals are used to make utensils for cooking?
(c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction. Quesiton 12. Give reasons (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil.