Quiz on Noble Gas Argon (Ar)
Argon (Ar) is a noble gas with the atomic number 18. It is colorless, odorless, and tasteless and makes up about 0.93% of Earth’s atmosphere. Argon was discovered in 1894 by Lord Rayleigh and Sir William Ramsay. Being chemically inert, it does not easily react with other elements or compounds. Because of this property, Argon is used in light bulbs, welding, and as a protective atmosphere for sensitive materials. It helps prevent oxidation in metal production and is also used in neon lights, where it gives a blue or violet glow.
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MCQ Questions on Quiz on Noble Gas Argon (Ar)
Q. What is the chemical symbol for Argon?
A. Ag
B. Ar
C. An
D. Ao
Correct: Option (B)
Q. What is the atomic number of Argon?
A. 16
B. 17
C. 18
D. 19
Correct: Option (C)
Q. Which group in the periodic table does Argon belong to?
A. Halogens
B. Alkali metals
C. Noble gases
D. Transition metals
Correct: Option (C)
Q. Who discovered Argon?
A. Carl Wilhelm Scheele
B. Lord Rayleigh and Sir William Ramsay
C. Dmitri Mendeleev
D. Marie Curie
Correct: Option (B)
Q. In which year was Argon discovered?
A. 1774
B. 1801
C. 1894
D. 1905
Correct: Option (C)
Q. What percentage of Earth's atmosphere is composed of Argon?
A. 0.93%
B. 1.5%
C. 0.45%
D. 2%
Correct: Option (A)
Q. What is one major use of Argon gas?
A. Cooking gas
B. Water purification
C. Welding and light bulbs
D. Rocket fuel
Correct: Option (C)
Q. What color glow does Argon produce in neon lights?
A. Red
B. Blue or violet
C. Green
D. Yellow
Correct: Option (B)
Q. Why is Argon called an inert gas?
A. Because it reacts quickly with other elements
B. Because it is radioactive
C. Because it does not easily react with other elements
D. Because it is a liquid at room temperature
Correct: Option (C)
Q. What is the physical state of Argon at room temperature?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct: Option (C)