Carbon is an essential organic compound on Earth, which is required for the continuity of the life process. Similar to other gases including oxygen and nitrogen, carbon also plays an important element in all living organisms. Carbon is the building block of life and plays an important role in photosynthesis. The movement of carbon dioxide among the four spheres of the earth is called the carbon cycle. This biogeochemical cycle helps in maintaining the carbon level within the atmosphere.
Explore more: Carbon Cycle
Here are solved important MCQs on Carbon and its Compounds.
The different types of carbon compounds are _________.
(a) Lipids
(b) Nucleic acids
(c) Carbohydrates
(d) All of the above
Sol. (d) All of the above.
What is the total percentage of carbon present in the human body?
(a) 15 to 16 per cent
(b) 18 to 19 per cent
(c) 20 to 25 per cent
(d) None of the above
Sol. (b) 18 to 19 per cent.
Which of the following statements is true about carbon?
(a) Carbon is the main component of carbohydrates.
(b) Carbon is a major component of living beings.
(c) Carbon is one of the basic building blocks for organic life
(d) All of the above
Sol. (d) All of the above.
In the atmosphere, carbon exists in the form of _________.
(a) Coal
(b) Carbon monoxide only
(c) Carbon dioxide only
(d) Both (b) and (c)
Sol. (c) Carbon dioxide only.
What is the total percentage of carbon present in the atmosphere?
(a) 0.04 percentage
(b) 20 percentage
(c) 0.09 percentage
(d) 0 to 4 percentage
Sol. (a) 0.04 percentage.
Which of the following factors contributes to the carbon cycle?
(a) Respiration
(b) Fossil fuels
(c) Photosynthesis
(d) All of the above
Sol. (d) All of the above.
Which of the following statements is true about the carbon cycle?
(a) Respiration and photosynthesis are important parts of the carbon cycle
(b) Respiration and photosynthesis are important parts of the water cycle
(c) Respiration and photosynthesis are important parts of the nitrogen cycle
(d) None of the above.
Sol. (a) Respiration and photosynthesis are important parts of the carbon cycle.
Which of the following serves as the main source of carbon for plants?
(a) Fossil fuels
(b) Atmospheric carbon dioxide
(c) Both (a) and (b)
(d) None of the above
Sol. (b) Atmospheric carbon dioxide.
One of the most important carbon compounds are _________.
(a) Charcoal
(b) Diamond
(c) Graphite
(d) Amorphous carbon
Sol. (a) Charcoal.
Which of the following compounds is not a type of carbon compound?
(a) Lipids
(b) Vitamins
(c) Nucleic acids
(d) Carbohydrates
Sol. (b) Vitamins.
Also Refer: Biomolecules
Stay tuned with BYJU’S Biology for more MCQs on Carbon and its Compounds for Class 10 and other Biology related topics.
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