Who discovered the specific mathematical formula detailing gas density variation relative to molecular weight, known as the diffusion law? MCQ with Answer and Explanation

Question
Who discovered the specific mathematical formula detailing gas density variation relative to molecular weight, known as the diffusion law?
A. John Dalton
B. Thomas Graham
C. Robert Boyle
D. Amadeo Avogadro
Answer: Option B
Solution (By JKSSB Mock Tests)
Graham's Law states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of its molecular mass.
This question belongs to: Static General Knowledge Inventions and Discoveries
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Question #1
Who discovered the phenomenon of radioactivity in 1896?
A. Henri Becquerel
B. Marie Curie
C. Wilhelm Röntgen
D. Ernest Rutherford
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Correct Answer: Option A

Explanation:
Henri Becquerel discovered radioactivity in 1896 while working with uranium salts, for which he shared the 1903 Nobel Prize in Physics.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #2
Who discovered that certain elements always react in fixed small whole number proportions by weight, establishing the Law of Definite Proportions?
A. Joseph Proust
B. John Dalton
C. Antoine Lavoisier
D. Robert Boyle
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Correct Answer: Option A

Explanation:
French chemist Joseph Proust proved chemical compounds contain fixed constituent mass ratios, verifying early atomic tracking.
This question belongs to: Static General Knowledge Inventions and Discoveries
Question #3
Who discovered artificial radioactivity and shared a Nobel Prize with her husband in 1935?
A. Irène Joliot-Curie
B. Marie Curie
C. Lise Meitner
D. Maria Goeppert Mayer
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Correct Answer: Option A

Explanation:
Irène Joliot-Curie (daughter of Marie Curie) and her husband Frédéric Joliot-Curie discovered artificial radioactivity.
This question belongs to: Static General Knowledge Inventions and Discoveries
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