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प्रश्न
Write true or false
Carbon constitues 0.03% of the earth’s crust.
पर्याय
True
False
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उत्तर
True
Carbon constitues 0.03% of the earth’s crust.
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संबंधित प्रश्न
Choose the correct alternative.
In combined state, carbon occurs as
Choose the correct alternative
Lamp black is
State three ways by which carbon dioxide gas is added into the atmosphere.
Tick the most appropriate answer.
Each molecule of Buckminster fulierene contains 60 atoms of carbon arranged as balls consisting of 12 pentagons and
a. 20 hexagons
b. 30 hexagons
c. 40 hexagons
d. 50 hexagons
FILL IN THE BLANK
Carbon atom has ................... electrons in its valence shell.
Name the simplest organic compound.
Answer the following question.
Why are methane compounds have low melting and boiling points?
State how carbon occurs in the free state and in the combined state.
According to the Octet rule, carbon requires ______ electrons to attain the nearest noble gas.
Which of the following is highly toxic?
