Quiz on Scandium
Scandium is a soft, silvery-white metal with the atomic number 21. It is the first element in the transition metals group of the periodic table. Scandium was discovered in 1879 by Lars Fredrik Nilson, a Swedish chemist. It is found in small amounts in minerals like thortveitite and euxenite. Although rare, scandium is valuable because it improves the strength and lightness of aluminum alloys, which are used in aerospace components, sports equipment, and bicycles. Scandium compounds are also used in metal halide lamps to produce bright white light.
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MCQ Questions on Quiz on Scandium
Q. What is the chemical symbol for Scandium?
A. Sd
B. Sc
C. Sn
D. Sm
Correct: Option (B)
Q. What is the atomic number of Scandium?
A. 19
B. 20
C. 21
D. 22
Correct: Option (C)
Q. Who discovered Scandium?
A. Sir Humphry Davy
B. Carl Wilhelm Scheele
C. Lars Fredrik Nilson
D. Antoine Lavoisier
Correct: Option (C)
Q. In which year was Scandium discovered?
A. 1774
B. 1808
C. 1879
D. 1894
Correct: Option (C)
Q. To which group of elements does Scandium belong?
A. Alkali metals
B. Alkaline earth metals
C. Transition metals
D. Noble gases
Correct: Option (C)
Q. What is the appearance of Scandium?
A. Golden metal
B. Soft silvery-white metal
C. Black solid
D. Colorless gas
Correct: Option (B)
Q. Which mineral is Scandium commonly found in?
A. Quartz
B. Thortveitite
C. Halite
D. Galena
Correct: Option (B)
Q. What is one major industrial use of Scandium?
A. Jewelry making
B. Improving aluminum alloys
C. Fuel production
D. Plastic manufacturing
Correct: Option (B)
Q. Which type of lamp uses Scandium compounds?
A. Fluorescent lamps
B. Metal halide lamps
C. LED lamps
D. Incandescent bulbs
Correct: Option (B)
Q. Which of the following industries benefits from Scandium-aluminum alloys?
A. Aerospace and sports equipment
B. Textile and food industries
C. Pharmaceuticals
D. Wood industry
Correct: Option (A)