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Q. Some scientist and discovery pairs are given below:
1.Bohr-Model of hydrogen atom
2.Einstein-Photoelectric effect
3.Chadwick-Neutron
4.De Broglie-Matter waves Which of the above pairs are correctly matched?
  • (A) 1, 2 and 3
  • (B) 2 and 4
  • (C) 1 and 2
  • (D) 1, 2, 3 and 4
✅ Correct Answer: (D) 1, 2, 3 and 4

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