Advertisements
Advertisements
Question
Answer the following question
What impurity is present in black diamond?
Solution
Black diamonds have copper oxide present in them as impurity.
APPEARS IN
RELATED QUESTIONS
Fill in the blank.
The tendency of an element to exist in two or more forms but in the same physical state is called ................
Fill in the blank.
............. is the hardest substance that occurs naturally.
Write true or false
Coloured diamonds are costlier than colourless and transparent diamonds
State the term:
Substances whose atoms or molecules are arranged in a definite pattern.
Answer the following question
Why is diamond very hard?
Name the products formed when:
graphite is subjected to high pressure and 3000°C temperature.
Tick the most appropriate answer.
Fuel gases like water gas and producer gas are manufactured from
a. bone charcoal
b. wood charcoal
c. coke
d. none of these
TRUE \ FALSE
Coal can be converted to coke by destructive distillation.
Why does diamond sparkle?
About 18% of the weight of the human body is carbonaAll the allotropic forms of carbon are solids.
