Home » General Knowledge » GK Question “What Silver Is?” general knowledge book English 2021 current affairs quiz and answers for class 7, 8, 9, 10, 12 students Exam.

GK Question “What Silver Is?” general knowledge book English 2021 current affairs quiz and answers for class 7, 8, 9, 10, 12 students Exam.

What Silver Is?

Since ancient times, mining for silver has been carried out. It was a source of wealth for kings in Europe. The King of Spain was delighted at the discovery of America as he would be able to obtain silver from mines in Peru and Mexico. The Spanish mines started to run low. For the king of Spain, the mines at Potosi in Peru produced silver worth 4,000,000 dollars every year, for a period of 250 years.

In California during Goldrush days’ people cursed the ‘black earth’, because it stuck to their gold dust. Only accidentally they discovered that that was silver.

Silver is a very distributed metal. It is found sometimes even in solid form. A single piece of silver weighing 750 kilograms was once found in Norway. Usually, it has to be separated from ores.

In ore, it is usually combined with sulfur as sulfur sulfide or some other sulfide. Chief combinations are copper, lead, arsenic. In the United States, its most common combination is lead. Silver occurs in many combinations and thus different meth-ods are adopted to separate it out.

Silver is too soft to be used in its pure state and is thus combined with many metals. In coins, 10 percent copper is added to 90 percent silver. The sterling silver used for jewelry and silverware is 92.5 percent silver and balance 7.5 percent as copper.

The word ‘sterling’ has a particular origin. The origin lies in a North German family called Easter ling. They were so honest traders that King John of England gave them the job of making English coins in the year 1215. Their job was so beautifully and honestly executed that their name is used as a sign of solid worth. All sterling silver is stamped with a hallmark, either the word “sterling” or a symbol depending on the country.

Pure silver, in the air, does not tarnish. Its turning black indicates sulfur in the air, for which oil wells or city smoke may be the source. It is next to gold in working easiness. About 30 grams of silver can be drawn into a wire about 50 kilometers long. It is a very good conductor of heat and electricity.

Related posts:

Why do tidal waves occur? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 1...
General Knowledge
Does the moon have seas? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11...
General Knowledge
Which animal abandons its babies very early? Complete General Knowledge Question and Answer for Clas...
General Knowledge
GK Question "Why Our Solar System Is As It Is?" general knowledge book English 2021 current affairs ...
General Knowledge
How did the Romans protect their cities from enemies? Complete General Knowledge Question and Answer...
General Knowledge
What is the significance of April Fools' Day? Complete General Knowledge Question and Answer for Cla...
General Knowledge
GK Question "The Shoes Were Invented By Whom?" general knowledge book English 2021 current affairs q...
General Knowledge
GK Question "What Do We Know About The Falling Stars?" general knowledge book English 2021 current a...
General Knowledge
What is a hormone? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
Why do plants turn toward the sunlight? Complete General Knowledge Question and Answer for Class 6, ...
General Knowledge
Do you know “The world's biggest school”.
Do you know
What was a death mask? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
GK Question "What Lead To The Discovery Of Fire" general knowledge book English 2021 current affairs...
General Knowledge
Do you know "Gargoti - the mineral museum".
General Knowledge
When did mammoths become extinct? Complete General Knowledge Question and Answer for Class 6, 7, 8, ...
General Knowledge
Do fish go to sleep? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and...
General Knowledge
What is the difference between pigeons and doves? Complete General Knowledge Question and Answer for...
General Knowledge
What is the sound barrier? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, ...
General Knowledge
How do migrating salmon return to the place where they were hatched? Complete General Knowledge Ques...
General Knowledge
Which are the poisonous spiders? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9...
General Knowledge

About

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*

This site uses Akismet to reduce spam. Learn how your comment data is processed.