Q31. What is the symbol for arsenic?
a) As
b) An
c) At
d) Ar
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Correct Answer: a) As
Explanation: Arsenic is represented by the symbol “As” in the periodic table. It is a metalloid element with various industrial uses, although it is highly toxic.
Q32. Which element’s symbol is “Sn”?
a) Tin
b) Titanium
c) Tellurium
d) Thallium
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Correct Answer: a) Tin
Explanation: Tin is represented by the symbol “Sn” in the periodic table. It is a soft, malleable metal with applications in soldering, coatings, and packaging.
Q33. What is the symbol for iodine?
a) Io
b) Id
c) I
d) In
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Correct Answer: c) I
Explanation: Iodine is represented by the symbol “I” in the periodic table. It is a halogen element essential for thyroid hormone production and is used in disinfectants and supplements.
Q34. Which element’s symbol is “K”?
a) Potassium
b) Krypton
c) Kryptonite
d) Kryptonate
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Correct Answer: a) Potassium
Explanation: Potassium is represented by the symbol “K” in the periodic table. It is an essential nutrient for plants and animals and is used in fertilizers and food processing.
Q35. What is the symbol for xenon?
a) Xe
b) Xn
c) X
d) Xn
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Correct Answer: a) Xe
Explanation: Xenon is represented by the symbol “Xe” in the periodic table. It is a noble gas used in various lighting applications, including high-intensity lamps and flash photography.
Q36. Which element’s symbol is “Ca”?
a) Calcium
b) Carbon
c) Californium
d) Cadmium
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Correct Answer: a) Calcium
Explanation: Calcium is represented by the symbol “Ca” in the periodic table. It is essential for bone and teeth health, muscle function, and nerve signaling.
Q37. What is the symbol for beryllium?
a) Be
b) By
c) Br
d) Bl
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Correct Answer: a) Be
Explanation: Beryllium is represented by the symbol “Be” in the periodic table. It is a lightweight metal used in aerospace, defense, and electronic industries.
Q38. Which element’s symbol is “Ni”?
a) Nickel
b) Nitrogen
c) Neodymium
d) Nobelium
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Correct Answer: a) Nickel
Explanation: Nickel is represented by the symbol “Ni” in the periodic table. It is a transition metal used in alloys, batteries, and plating.
Q39. What is the symbol for radium?
a) Ra
b) Rd
c) Ri
d) Rm
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Correct Answer: a) Ra
Explanation: Radium is represented by the symbol “Ra” in the periodic table. It is a radioactive element used in cancer therapy and luminescent paints.
Q40. Which element’s symbol is “Rb”?
a) Rubidium
b) Radium
c) Roentgenium
d) Radon
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Correct Answer: a) Rubidium
Explanation: Rubidium is represented by the symbol “Rb” in the periodic table. It is an alkali metal used in atomic clocks and research applications.