Questions & Answers
Browse all 25 questions from the
Historical Milestones in Chemistry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which scientist is credited with the discovery of oxygen in 1774?
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A
Joseph Priestley
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B
Antoine Lavoisier
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C
Robert Boyle
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D
Humphry Davy
2
In 1869, which scientist published the first widely recognized version of the periodic table?
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A
John Newlands
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B
Dmitri Mendeleev
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C
Lothar Meyer
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D
Henry Moseley
3
Which element was isolated for the first time by Marie and Pierre Curie in 1898?
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A
Uranium
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B
Polonium
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C
Thorium
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D
Actinium
4
Who proposed the Law of Conservation of Mass in 1789?
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A
John Dalton
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B
Joseph Proust
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C
Antoine Lavoisier
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D
Carl Scheele
5
The 1903 Nobel Prize in Physics was awarded to which husband and wife team for their research on radiation?
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A
The Curies
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B
The Bohrs
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C
The Rutherfords
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D
The Braggs
6
What substance did Humphry Davy identify as an element in 1807 through electrolysis?
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A
Oxygen
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B
Sodium
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C
Carbon
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D
Nitrogen
7
Who is known as the father of modern chemistry for his work on combustion and the metric system?
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A
Robert Boyle
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B
Amedeo Avogadro
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C
Antoine Lavoisier
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D
Louis Pasteur
8
In 1913, who proposed the atomic model where electrons orbit the nucleus in fixed energy levels?
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A
J.J. Thomson
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B
Ernest Rutherford
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C
Niels Bohr
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D
Erwin Schrödinger
9
Which English chemist formulated the Law of Multiple Proportions in 1803?
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A
John Dalton
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B
William Henry
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C
James Prescott Joule
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D
Michael Faraday
10
What famous experiment in 1909 proved the existence of a dense, positively charged nucleus?
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A
Oil drop experiment
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B
Gold foil experiment
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C
Cathode ray experiment
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D
Double-slit experiment
11
Who discovered the noble gases, including argon, in the late 19th century?
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A
William Ramsay
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B
Lord Rayleigh
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C
Dmitri Mendeleev
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D
Linus Pauling
12
What did Friedrich Wöhler synthesize in 1828, effectively disproving the concept of vitalism?
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A
Glucose
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B
Urea
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C
Acetic acid
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D
Protein
13
Who developed the pH scale in 1909 while working for the Carlsberg Laboratory?
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A
Gilbert Lewis
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B
Søren Sørensen
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C
Svante Arrhenius
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D
Walther Nernst
14
Which scientist discovered the electron using a cathode ray tube in 1897?
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A
Ernest Rutherford
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B
J.J. Thomson
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C
James Chadwick
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D
Robert Millikan
15
What major chemical process for synthesizing ammonia was patented by Fritz Haber in 1908?
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A
Ostwald process
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B
Haber-Bosch process
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C
Solvay process
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D
Contact process
16
Who received the 1954 Nobel Prize in Chemistry for his research into the nature of the chemical bond?
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A
Linus Pauling
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B
Robert Mulliken
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C
Glenn Seaborg
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D
Dorothy Hodgkin
17
In 1808, who proposed the Atomic Theory stating that all matter is composed of atoms?
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A
John Dalton
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B
Isaac Newton
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C
Antoine Lavoisier
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D
Joseph Priestley
18
Which element was named after the Greek word for 'lazy' due to its lack of chemical reactivity?
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A
Helium
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B
Neon
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C
Argon
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D
Krypton
19
Who was the first woman to win a Nobel Prize in Chemistry (in 1911) for the discovery of radium and polonium?
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A
Irene Joliot-Curie
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B
Marie Curie
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C
Rosalind Franklin
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D
Dorothy Hodgkin
20
James Chadwick discovered which subatomic particle in 1932?
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A
Proton
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B
Electron
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C
Neutron
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D
Positron
21
What analytical technique was developed by Michael Tswett in 1900 for separating plant pigments?
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A
Distillation
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B
Chromatography
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C
Titration
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D
Electrolysis
22
Which chemist invented the safety lamp for miners in 1815?
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A
Humphry Davy
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B
Michael Faraday
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C
John Dalton
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D
Robert Bunsen
23
Who formulated the 'Law of Octaves' regarding the periodicity of elements in 1864?
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A
John Newlands
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B
Dmitri Mendeleev
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C
Lothar Meyer
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D
Henry Moseley
24
In 1777, who published his book 'Chemical Essay on Air and Fire' describing oxygen as 'fire-air'?
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A
Carl Wilhelm Scheele
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B
Joseph Black
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C
Antoine Lavoisier
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D
Henry Cavendish
25
Which synthetic element was the first to be produced by nuclear bombardment in 1937?
-
A
Technetium
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B
Promethium
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C
Astatine
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D
Francium
