Element – 30: Zinc (Zn) | āĻŽā§ŒāϞ – ā§Šā§Ļ: āϜāĻŋāĻ‚āĻ• (Zn)













Element – 30: Zinc (Zn) | āĻŽā§ŒāϞ – ā§Šā§Ļ: āϜāĻŋāĻ‚āĻ• (Zn)



  • Element / āĻŽā§ŒāϞ: Zinc (Zn) / āϜāĻŋāĻ‚āĻ• (Zn)

  • Atomic Number / āĻĒā§°āĻŽāĻžāϪ⧁ āϏāĻ‚āĻ–ā§āϝāĻž: 30 / ā§Šā§Ļ

  • Nature / āĻĒā§ā§°āĻ•ā§ƒāϤāĻŋ: Metal / āϧāĻžāϤ⧁


Note: Zinc is a metal used to prevent rust and is important for good health.
(āϜāĻŋāĻ‚āĻ• āĻāϟāĻž āϧāĻžāϤ⧁ āϝāĻŋ āϞ⧋āĻšāĻžāϤ āĻŽā§°āĻŋāϚāĻž āϧ⧰āĻž ā§°ā§‹āϧ āϕ⧰āĻŋāĻŦāϞ⧈ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ āφ⧰⧁ āϏ⧁āĻ¸ā§āĻŦāĻžāĻ¸ā§āĻĨā§āϝ⧰ āĻŦāĻžāĻŦ⧇āĻ“ āĻ…āϤāĻŋ āϗ⧁⧰⧁āĻ¤ā§āĻŦāĻĒā§‚ā§°ā§āĻŖāĨ¤)


Points / āĻŦāĻŋāώāϝāĻŧāϏāĻŽā§‚āĻš



  • Bluish-white metal / āύ⧀āϞāĻž-āϧ⧂āϏ⧰ āĻŦāĻ—āĻž āϧāĻžāϤ⧁

  • Protects iron from rusting / āϞ⧋āĻšāĻžāϤ āĻŽā§°āĻŋāϚāĻž āϧ⧰āĻž ā§°ā§‹āϧ āϕ⧰⧇

  • Used in galvanization / āĻ—ā§āϝāĻžāϞāĻ­āĻžāύāĻžāχāĻœā§‡āϚāύāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ

  • Used as a protective coating / āϏ⧁⧰āĻ•ā§āώāĻžāĻŽā§‚āϞāĻ• āĻ†ā§ąā§°āĻŖ āĻšāĻŋāϚāĻžāĻĒ⧇ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ

  • Important for the immune system / ā§°ā§‹āĻ—-āĻĒā§ā§°āϤāĻŋā§°ā§‹āϧ āĻ•ā§āώāĻŽāϤāĻžā§° āĻŦāĻžāĻŦ⧇ āϗ⧁⧰⧁āĻ¤ā§āĻŦāĻĒā§‚ā§°ā§āĻŖ


Atomic Structure / āĻĒā§°āĻŽāĻžāϪ⧁⧰ āĻ—āĻ āύ



  • Protons / āĻĒā§ā§°āϟāύ: 30 (ā§Šā§Ļ)

  • Electrons / āχāϞ⧇āĻ•ā§āĻŸā§ā§°āύ: 30 (ā§Šā§Ļ)


Why is Zinc Important ? / āϜāĻŋāĻ‚āĻ• āĻ•āĻŋāϝāĻŧ āϗ⧁⧰⧁āĻ¤ā§āĻŦāĻĒā§‚ā§°ā§āĻŖ ?



  • Prevents rusting / āĻŽā§°āĻŋāϚāĻž āϧ⧰āĻž ā§°ā§‹āϧ āϕ⧰⧇

  • Used in protective coatings / āϏ⧁⧰āĻ•ā§āώāĻžāĻŽā§‚āϞāĻ• āĻ†ā§ąā§°āĻŖāϤ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ

  • Important for good health and the immune system / āϏ⧁āĻ¸ā§āĻŦāĻžāĻ¸ā§āĻĨā§āϝ āφ⧰⧁ ā§°ā§‹āĻ—-āĻĒā§ā§°āϤāĻŋā§°ā§‹āϧ āĻ•ā§āώāĻŽāϤāĻžā§° āĻŦāĻžāĻŦ⧇ āϗ⧁⧰⧁āĻ¤ā§āĻŦāĻĒā§‚ā§°ā§āĻŖ


Fact / āϤāĻĨā§āϝ: Zinc is used to protect iron from corrosion. It also helps the body fight infections. (āϜāĻŋāĻ‚āĻ• āϞ⧋āĻšāĻžāĻ• āĻ•ā§āώāϝāĻŧ (Corrosion)ā§° āĻĒā§°āĻž āϏ⧁⧰āĻ•ā§āώāĻž āĻĻāĻŋāϝāĻŧ⧇āĨ¤ āχ āĻļ⧰⧀⧰āĻ• āϏāĻ‚āĻ•ā§ā§°āĻŽāĻŖā§° āĻŦāĻŋ⧰⧁āĻĻā§āϧ⧇ āϝ⧁āρāϜāĻŋāĻŦāϞ⧈āĻ“ āϏāĻšāĻžāϝāĻŧ āϕ⧰⧇āĨ¤)


MCQs


1. What is the atomic number of Zinc (Zn)? / āϜāĻŋāĻ‚āĻ• (Zn)-ā§° āĻĒā§°āĻŽāĻžāϪ⧁ āϏāĻ‚āĻ–ā§āϝāĻž āĻ•āĻŋāĻŽāĻžāύ?
A) 29 B) 31 C) 30 D) 32
Ans / āωāĻ¤ā§āϤ⧰: C) 30

Explanation: Zinc has 30 protons, so its atomic number is 30. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϜāĻŋāĻ‚āϕ⧰ ā§Šā§ĻāϟāĻž āĻĒā§ā§°āϟāύ āĻĨāĻžāϕ⧇, āϏ⧇āϝāĻŧ⧇āĻšā§‡ āχāϝāĻŧāĻžā§° āĻĒā§°āĻŽāĻžāϪ⧁ āϏāĻ‚āĻ–ā§āϝāĻž ā§Šā§ĻāĨ¤


2. Zinc is a ________. / āϜāĻŋāĻ‚āĻ• āĻāϟāĻž ________āĨ¤
A) Non-metal B) Gas C) Metal D) Liquid
Ans / āωāĻ¤ā§āϤ⧰: C) Metal (āϧāĻžāϤ⧁)
Explanation: Zinc is a bluish-white metal. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϜāĻŋāĻ‚āĻ• āĻāϟāĻž āύ⧀āϞāĻž-āϧ⧂āϏ⧰ āĻŦāĻ—āĻž āϧāĻžāϤ⧁āĨ¤

 

3. Zinc is mainly used to protect iron from ________. / āϜāĻŋāĻ‚āĻ• āĻŽā§‚āϞāϤāσ āϞ⧋āĻšāĻžāĻ• āĻ•āĻŋāĻšā§° āĻĒā§°āĻž āϏ⧁⧰āĻ•ā§āώāĻž āĻĻāĻŋāĻŦāϞ⧈ āĻŦā§āĻ¯ā§ąāĻšāĻžā§° āĻšāϝāĻŧ?
A) Fire B) Heat C) Rusting (Corrosion) D) Water
Ans / āωāĻ¤ā§āϤ⧰: C) Rusting (Corrosion) / āĻŽā§°āĻŋāϚāĻž āϧ⧰āĻž
Explanation: Zinc coating prevents iron from rusting. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϜāĻŋāĻ‚āϕ⧰ āĻ†ā§ąā§°āϪ⧇ āϞ⧋āĻšāĻžāϤ āĻŽā§°āĻŋāϚāĻž āϧ⧰āĻž ā§°ā§‹āϧ āϕ⧰⧇āĨ¤

 

4. The process of coating iron with zinc is called ________. / āϞ⧋āĻšāĻžā§° āĻ“āĻĒā§°āϤ āϜāĻŋāĻ‚āϕ⧰ āĻ†ā§ąā§°āĻŖ āĻĻāĻŋāϝāĻŧāĻžā§° āĻĒā§ā§°āĻ•ā§ā§°āĻŋāϝāĻŧāĻžāĻ• āĻ•āĻŋ āĻ•āϝāĻŧ?
A) Melting B) Welding C) Galvanization D) Polishing
Ans / āωāĻ¤ā§āϤ⧰: C) Galvanization (āĻ—ā§āϝāĻžāϞāĻ­āĻžāύāĻžāχāĻœā§‡āϚāύ)
Explanation: Galvanization protects iron from corrosion by coating it with zinc. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āĻ—ā§āϝāĻžāϞāĻ­āĻžāύāĻžāχāĻœā§‡āϚāύāϤ āϞ⧋āĻšāĻžā§° āĻ“āĻĒā§°āϤ āϜāĻŋāĻ‚āϕ⧰ āĻ†ā§ąā§°āĻŖ āĻĻāĻŋ āĻ•ā§āώāϝāĻŧā§° āĻĒā§°āĻž āϏ⧁⧰āĻ•ā§āώāĻž āĻĻāĻŋāϝāĻŧāĻž āĻšāϝāĻŧāĨ¤

 

5. How many electrons are present in a neutral zinc atom ? / āĻāϟāĻž āύāĻŋā§°āĻĒ⧇āĻ•ā§āώ āϜāĻŋāĻ‚āĻ• āĻĒā§°āĻŽāĻžāϪ⧁āϤ āĻ•āĻŋāĻŽāĻžāύāϟāĻž āχāϞ⧇āĻ•ā§āĻŸā§ā§°āύ āĻĨāĻžāϕ⧇ ?
A) 29 B) 30 C) 31 D) 32
Ans / āωāĻ¤ā§āϤ⧰: B) 30
Explanation: A neutral zinc atom has 30 electrons, equal to its protons. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āĻāϟāĻž āύāĻŋā§°āĻĒ⧇āĻ•ā§āώ āϜāĻŋāĻ‚āĻ• āĻĒā§°āĻŽāĻžāϪ⧁āϤ ā§Šā§ĻāϟāĻž āχāϞ⧇āĻ•ā§āĻŸā§ā§°āύ āĻĨāĻžāϕ⧇, āϝāĻŋ āĻĒā§ā§°āϟāύ⧰ āϏāĻ‚āĻ–ā§āϝāĻžā§° āϏāĻŽāĻžāύāĨ¤

 

6. Zinc is important for the ________. / āϜāĻŋāĻ‚āĻ• āĻ•āĻŋāĻšā§° āĻŦāĻžāĻŦ⧇ āϗ⧁⧰⧁āĻ¤ā§āĻŦāĻĒā§‚ā§°ā§āĻŖ?
A) Digestive system B) Nervous system C) Immune system D) Respiratory system
Ans / āωāĻ¤ā§āϤ⧰: C) Immune system (ā§°ā§‹āĻ—-āĻĒā§ā§°āϤāĻŋā§°ā§‹āϧ āĻ•ā§āώāĻŽāϤāĻž)
Explanation: Zinc helps the body's immune system fight infections. āĻŦā§āϝāĻžāĻ–ā§āϝāĻž: āϜāĻŋāĻ‚āϕ⧇ āĻļ⧰⧀⧰⧰ ā§°ā§‹āĻ—-āĻĒā§ā§°āϤāĻŋā§°ā§‹āϧ āĻ•ā§āώāĻŽāϤāĻž āĻŦ⧃āĻĻā§āϧāĻŋ āϕ⧰āĻŋ āϏāĻ‚āĻ•ā§ā§°āĻŽāĻŖā§° āĻŦāĻŋ⧰⧁āĻĻā§āϧ⧇ āϝ⧁āρāϜāĻŋāĻŦāϞ⧈ āϏāĻšāĻžāϝāĻŧ āϕ⧰⧇āĨ¤