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Looking for MCQs? You're in the right place! Whether you're preparing for competitive exams, school boards or just aiming to improve your knowledge, we offer MCQs for all levels and subjects.
Answer: Henri Becquerel
Henri Becquerel discovered radioactivity in 1896, a fundamental breakthrough in nuclear physics.
Answer: J.J. Thomson
J.J. Thomson discovered the electron in 1897, showing that atoms have smaller charged particles.
Answer: Louis Le Chatelier
Louis Le Chatelier formulated the principle of chemical equilibrium, which explains the behavior of reversible reactions.
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Answer: Nicolaus Copernicus
Nicolaus Copernicus developed the heliocentric model, suggesting that the Earth orbits the Sun.
Answer: Christiaan Huygens
Christiaan Huygens first observed and described the rings of Saturn using a telescope in 1655.
Answer: Robert Koch
Robert Koch identified specific bacteria as the cause of diseases like tuberculosis, establishing germ theory.
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Answer: Niels Bohr
Niels Bohr developed the Bohr model, which described electrons orbiting the nucleus in discrete levels.
Answer: Louis de Broglie
Louis de Broglie proposed that light has both wave and particle characteristics, a key concept in quantum mechanics.
Answer: James Watt
James Watt is credited with developing the first practical steam engine, which revolutionized industry.
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Answer: Charles Darwin
Charles Darwin is known for developing the concept of natural selection as the mechanism of evolution.
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