Give reason for the following :
Silver, gold and platinum are used to make jewellery

Academic Chemistry NCERT Class 10

Gold, silver, and platinum are less reactive metals. They do not react with air, water, acids, and alkalis and do not corrode easily. Hence, they are used to make jewellery.

Tutorialspoint

Updated on: 10-Oct-2022

128 Views

Given reasons:(a) Platinum, gold and silver are used to make jewellery.(b) Metals like sodium and potassium are stored under oil.
Give reasons :(a) Platinum, gold and silver are used to make jewellery.(b) Sodium, potassium and lithium are stored under oil.(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.
International standards of weights are made of (gold-silver/platinum-iridium) alloy.
Name two metals which are used to make jewellery.
While making gold jewellery which property/ies of gold is / are considered?
Give reasons for the following :Silver is used in making mirrors.Aluminium is used to make electrical wire.Iron is used in the construction of bridges and houses.Graphite is used as an electrode in the dry cell.Iron sheets are galvanized before use.
A customer buys a gold jewellery, he is told that the jewellery has 90% gold and the rest copper. He is given a bill which amounts 100% charges of gold. The customer refuses to pay the bill for 100% gold but brings it to 90% gold amount and settles the bill.(a) How many atoms of gold are present in 1 gram of gold?(b) What is the ratio of gold and copper in the jewellery?(c) What value of customer is reflected in the above statement?
Give two uses of platinum.
Give the Latin name for sodium, potassium, gold, and mercury.
Why does goldsmith use the outermost zone of the flame for melting gold and silver?
State one use of each of the following metals:Copper, Aluminium, Iron, Silver, Gold, Mercury
Both copper and silver are conductors of electricity but only copper is used for making electrical wires and not silver. Why?
Are the following statements true or false?Give reason for your answer.Every integer is a rational number.
Are the following statements true or false?Give reason for your answer.Every rational number is an integer.
Are the following statements true or false?Give reason for your answer.Every integer is a whole number.

Kickstart Your Career

Get certified by completing the course

Get Started

Advertisements