Element 6: Carbon (C) / āĻŽā§āϞ ā§Ŧ: āĻāĻžā§°ā§āĻŦāύ (C) â Used in fuels, steel, graphite, diamonds.
Basic Information / āĻŽā§āϞāĻŋāĻ āϤāĻĨā§āϝ
- Name: Carbon / āύāĻžāĻŽ: āĻāĻžā§°ā§āĻŦāύ
- Symbol: C / āĻāĻŋāĻšā§āύ: C
- Atomic Number: 6 / āĻĒāĻžā§°āĻŽāĻžāĻŖā§ąāĻŋāĻ āϏāĻāĻā§āϝāĻž: ā§Ŧ
- Nature: Non-metal / āĻĒā§ā§°āĻā§āϤāĻŋ: āĻ āϧāĻžāϤā§
Carbon is the basic element of life. : āĻāĻžā§°ā§āĻŦāύ āĻšā§āĻā§ āĻā§ā§ąāύ⧰ āĻŽā§āϞ āĻŽā§āϞāĨ¤
Structure of Atom / āĻĒā§°āĻŽāĻžāĻŖā§ā§° āĻāĻ āύ
- Protons: 6 / āĻĒā§ā§°ā§āĻāύ: ā§Ŧ
- Electrons: 6 / āĻāϞā§āĻā§āĻā§ā§°āύ: ā§Ŧ
- Neutrons: 6 (usually) / āύāĻŋāĻāĻā§ā§°āύ: ā§Ŧ (āϏāĻžāϧāĻžā§°āĻŖāϤā§)
Simple atomic structure. : āϏāĻšāĻ āĻĒā§°āĻŽāĻžāĻŖā§ āĻāĻ āύāĨ¤
Properties / āĻā§āĻŖāϏāĻŽā§āĻš
- Non-metal / āĻ āϧāĻžāϤā§
- Forms many compounds / āĻŦāĻšā§āϤ⧠āϝā§āĻ āĻāĻ āύ āĻā§°ā§
- Strong bonding ability / āĻļāĻā§āϤāĻŋāĻļāĻžāϞ⧠āĻŦāύā§āϧāύ āĻāĻ āύ āĻā§°ā§
- Exists in different forms / āĻŦāĻŋāĻāĻŋāύā§āύ ā§°ā§āĻĒāϤ āĻĒā§ā§ąāĻž āϝāĻžāϝāĻŧ
Allotropes of Carbon / āĻāĻžā§°ā§āĻŦāύ⧰ āĻŦāĻŋāĻāĻŋāύā§āύ ā§°ā§āĻĒ
- Diamond / āĻšā§ā§°āĻž (āĻā§āĻŦ āĻļāĻā§āϤāĻŋāĻļāĻžāϞā§)
- Graphite / āĻā§ā§°āĻžāĻĢāĻžāĻāĻ (āĻĒā§āύā§āϏāĻŋāϞāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ)
Same element, different forms. : āĻāĻā§ āĻŽā§āϞ, āĻāĻŋāύā§āύ ā§°ā§āĻĒāĨ¤
Uses / āĻŦā§āĻ¯ā§ąāĻšāĻžā§°
- Fuels / āĻāύā§āϧāύāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ
- Plastics / āĻĒā§āϞāĻžāώā§āĻāĻŋāĻāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ
- Pencil (graphite) / āĻĒā§āύā§āϏāĻŋāϞāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ
- Jewelry (diamond) / āĻāĻšāύāĻžāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ
Importance / āĻā§ā§°ā§āϤā§āĻŦ
- Basis of life / āĻā§ā§ąāύ⧰ āĻāĻŋāϤā§āϤāĻŋ
- Found in all living organisms / āϏāĻāϞ⧠āĻā§ā§ąāϤ āĻĒā§ā§ąāĻž āϝāĻžāϝāĻŧ
- Forms millions of compounds / āϞāĻžāĻ āϞāĻžāĻ āϝā§āĻ āĻāĻ āύ āĻā§°ā§
Example Molecule / āĻāĻĻāĻžāĻšā§°āĻŖ
- COâ (Carbon dioxide)
Important for respiration and photosynthesis : āĻļā§āĻŦāĻžāϏ-āĻĒā§ā§°āĻļā§āĻŦāĻžāϏ āĻā§°ā§ āĻāĻĻā§āĻāĻŋāĻĻā§° āĻŦāĻžāĻŦā§ āĻā§ā§°ā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ
Fact / āϤāĻĨā§āϝ : Diamond and graphite are both forms of carbon. : āĻšā§ā§°āĻž āĻā§°ā§ āĻā§ā§°āĻžāĻĢāĻžāĻāĻ āĻĻā§āϝāĻŧā§āĻāĻžāĻ āĻāĻžā§°ā§āĻŦāύ⧰ ā§°ā§āĻĒāĨ¤
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Carbon (C) – PYQ MCQs
Q1. Carbon belongs to which group of the periodic table ? : āĻāĻžā§°ā§āĻŦāύ āĻā§ąā§°ā§āϤ āϏāĻžā§°āĻŖā§ā§° āĻā§āύāĻā§ āĻā§āĻāϤ āĻĒā§°ā§ ?
(a) Group 13 (b) Group 14 (c) Group 15 (d) Group 16
Ans: (b) Group 14
Explanation: Carbon is placed in Group 14. : āĻāĻžā§°ā§āĻŦāύ āĻā§āĻ ā§§ā§ĒāϤ āĻĨāĻžāĻā§āĨ¤
Q2. Atomic number of carbon is: āĻāĻžā§°ā§āĻŦāύ⧰ āĻĒāĻžā§°āĻŽāĻžāĻŖā§ąāĻŋāĻ āϏāĻāĻā§āϝāĻž āĻāĻŋ ?
(a) 4 (b) 5 (c) 6 (d) 7
Ans: (c) 6
Explanation: Atomic number = number of protons = 6. : āĻĒāĻžā§°āĻŽāĻžāĻŖā§ąāĻŋāĻ āϏāĻāĻā§āϝāĻž = āĻĒā§ā§°ā§āĻāύ⧰ āϏāĻāĻā§āϝāĻž = ā§ŦāĨ¤
Q3. Carbon is classified as: : āĻāĻžā§°ā§āĻŦāύāĻ āĻā§āύā§āĻā§ āĻļā§ā§°ā§āĻŖā§āĻŦāĻĻā§āϧ āĻā§°āĻž āĻšāϝāĻŧ ?
(a) Metal (b) Non-metal (c) Metalloid (d) Noble gas
Ans: (b) Non-metal
Explanation: Carbon is a non-metal. : āĻāĻžā§°ā§āĻŦāύ āĻāĻāĻž āĻ
āϧāĻžāϤā§āĨ¤
Q4. Number of electrons in carbon atom is: āĻāĻžā§°ā§āĻŦāύ āĻĒā§°āĻŽāĻžāĻŖā§āϤ āĻāĻŋāĻŽāĻžāύ āĻāϞā§āĻā§āĻā§ā§°āύ āĻĨāĻžāĻā§ ?
(a) 4 (b) 5 (c) 6 (d) 7
Ans: (c) 6
Explanation: Electrons = atomic number = 6. āĻāϞā§āĻā§āĻā§ā§°āύ = ā§ŦāĨ¤
Q5. Carbon is found in: āĻāĻžā§°ā§āĻŦāύ āĻ’āϤ āĻĒā§ā§ąāĻž āϝāĻžāϝāĻŧ ?
(a) Only air (b) Only water (c) All living organisms (d) Only metals
Ans: (c) All living organisms
Explanation: Carbon is present in all living things. : āϏāĻāϞ⧠āĻā§ā§ąāϤ āĻāĻžā§°ā§āĻŦāύ āĻĨāĻžāĻā§āĨ¤
Q6. Diamond and graphite are: āĻšā§ā§°āĻž āĻā§°ā§ āĻā§ā§°āĻžāĻĢāĻžāĻāĻ āĻāĻŋ ?
(a) Different elements (b) Compounds (c) Allotropes of carbon (d) Metals
Ans: (c) Allotropes of carbon
Explanation: They are different forms of the same element. : āĻāĻā§ āĻŽā§āϞ⧰ āĻāĻŋāύā§āύ ā§°ā§āĻĒāĨ¤
Q7. Carbon forms: : āĻāĻžā§°ā§āĻŦāύ āĻāĻŋ āĻāĻ āύ āĻā§°ā§ ?
(a) Few compounds (b) No compounds (c) Millions of compounds (d) Only gases
Ans: (c) Millions of compounds
Explanation: Carbon has strong bonding ability. : āĻāĻžā§°ā§āĻŦāύ⧠āĻŦāĻšā§āϤ⧠āϝā§āĻ āĻāĻ āύ āĻā§°ā§āĨ¤
Q8. Carbon dioxide formula is: : āĻāĻžā§°ā§āĻŦāύ āĻĄāĻžāĻāĻ
āĻā§āϏāĻžāĻāĻĄā§° āϏā§āϤā§ā§° āĻāĻŋ?
(a) CO (b) COâ (c) CâO (d) Oâ
Ans: (b) COâ
Explanation: Carbon dioxide = COâ. : āĻāĻžā§°ā§āĻŦāύ āĻĄāĻžāĻāĻ
āĻā§āϏāĻžāĻāĻĄ = COâāĨ¤
Q9. Carbon is used in: āĻāĻžā§°ā§āĻŦāύ āĻ’āϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ ?
(a) Fuels (b) Plastics (c) Both (a) and (b) (d) None
Ans: (c) Both (a) and (b)
Explanation: Carbon is used in fuels and plastics. : āĻāύā§āϧāύ āĻā§°ā§ āĻĒā§āϞāĻžāώā§āĻāĻŋāĻāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧāĨ¤
Q10. Carbon is important because: āĻāĻžā§°ā§āĻŦāύ āĻā§ā§°ā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ āĻāĻžā§°āĻŖ -
(a) It is heavy (b) It is rare (c) It is basis of life (d) It is gas
Ans: (c) It is basis of life
Explanation: Carbon is essential for life. : āĻā§ā§ąāύ⧰ āĻŦāĻžāĻŦā§ āĻ āϤā§āϝāύā§āϤ āĻā§ā§°ā§āϤā§āĻŦāĻĒā§āϰā§āĻŖāĨ¤