Everyday Science MCQs (page 22 of 51)
Physics, chemistry, biology, the human body, units and the solar system, covering the everyday science section of general-ability tests.
1,014 questions. Select an option to check your answer, or open "Show answer". Showing 421–440.
- 421.
Which element has the atomic number 90?
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Answer: D. Thorium
Atomic number 90 belongs to thorium (Th).
- 422.
What is the chemical symbol of protactinium?
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Answer: C. Pa
The symbol of protactinium is Pa.
- 423.
Which element has the chemical symbol Pa?
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Answer: A. Protactinium
Pa is the symbol of protactinium.
- 424.
What is the atomic number of protactinium?
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Answer: C. 91
Protactinium has 91 protons, so its atomic number is 91.
- 425.
Which element has the atomic number 91?
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Answer: A. Protactinium
Atomic number 91 belongs to protactinium (Pa).
- 426.
What is the chemical symbol of uranium?
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Answer: B. U
The symbol of uranium is U.
- 427.
Which element has the chemical symbol U?
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Answer: A. Uranium
U is the symbol of uranium.
- 428.
What is the atomic number of uranium?
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Answer: C. 92
Uranium has 92 protons, so its atomic number is 92.
- 429.
Which element has the atomic number 92?
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Answer: A. Uranium
Atomic number 92 belongs to uranium (U).
- 430.
What is the chemical symbol of neptunium?
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Answer: C. Np
The symbol of neptunium is Np.
- 431.
Which element has the chemical symbol Np?
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Answer: C. Neptunium
Np is the symbol of neptunium.
- 432.
What is the atomic number of neptunium?
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Answer: B. 93
Neptunium has 93 protons, so its atomic number is 93.
- 433.
Which element has the atomic number 93?
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Answer: B. Neptunium
Atomic number 93 belongs to neptunium (Np).
- 434.
What is the chemical symbol of plutonium?
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Answer: C. Pu
The symbol of plutonium is Pu.
- 435.
Which element has the chemical symbol Pu?
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Answer: B. Plutonium
Pu is the symbol of plutonium.
- 436.
What is the atomic number of plutonium?
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Answer: B. 94
Plutonium has 94 protons, so its atomic number is 94.
- 437.
Which element has the atomic number 94?
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Answer: A. Plutonium
Atomic number 94 belongs to plutonium (Pu).
- 438.
What is the chemical symbol of americium?
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Answer: D. Am
The symbol of americium is Am.
- 439.
Which element has the chemical symbol Am?
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Answer: A. Americium
Am is the symbol of americium.
- 440.
What is the atomic number of americium?
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Answer: C. 95
Americium has 95 protons, so its atomic number is 95.