Read the given passage carefully then answer the questions given below
Gold used in jewelery is mixed with harder metals to add strength and
durability. The metals. added can also be used to change gold's colour,
giving it a fashionable rose or white tint, or to lighten or darken the natural
yellow tone of pure gold. Mixtures like these, of less costly metals with
more valueable ones, are called alloys. Copper and silver are the most
common metals mixed with gold to make yellow gold jewelery. White gold
is usually made with an alloy of gold and nickel.
The measure of gold's purity is called a karat. The higher the karat
rating, the higher the amount of pure : 24 karat is pure gold, 18 karat is 75%
of pure gold, 14 karat is 58.5 pure gold and 9 karat is 37.5 pure gold. All
other things being equal, the higher percentage of pure gold used in the
alloy, the more valuable and expensive the jewelery will be.
Gold jewelery pieces are usually stamped with a marking to identify
the karat amount. While Gold that is 24K is too soft for jewelery, 18K, 14K
and 9K gold are all appropriate for jewelery, Gold they all make pieces that
look great and wear beautifully.
Tick the correct option -
1. Which of the
following statements best captures the main idea of this passage
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Answer:
the measurement of gold purity is called karat
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