Everyday Science MCQs (page 5 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 81–100.
- 81.
What is the atomic number of lithium?
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Answer: B. 3
Lithium has 3 protons, so its atomic number is 3.
- 82.
Which element has the atomic number 3?
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Answer: D. Lithium
Atomic number 3 belongs to lithium (Li).
- 83.
What is the chemical symbol of beryllium?
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Answer: B. Be
The symbol of beryllium is Be.
- 84.
Which element has the chemical symbol Be?
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Answer: A. Beryllium
Be is the symbol of beryllium.
- 85.
What is the atomic number of beryllium?
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Answer: C. 4
Beryllium has 4 protons, so its atomic number is 4.
- 86.
Which element has the atomic number 4?
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Answer: B. Beryllium
Atomic number 4 belongs to beryllium (Be).
- 87.
What is the chemical symbol of boron?
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Answer: C. B
The symbol of boron is B.
- 88.
Which element has the chemical symbol B?
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Answer: D. Boron
B is the symbol of boron.
- 89.
What is the atomic number of boron?
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Answer: C. 5
Boron has 5 protons, so its atomic number is 5.
- 90.
Which element has the atomic number 5?
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Answer: A. Boron
Atomic number 5 belongs to boron (B).
- 91.
What is the chemical symbol of carbon?
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Answer: D. C
The symbol of carbon is C.
- 92.
Which element has the chemical symbol C?
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Answer: D. Carbon
C is the symbol of carbon.
- 93.
What is the atomic number of carbon?
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Answer: C. 6
Carbon has 6 protons, so its atomic number is 6.
- 94.
Which element has the atomic number 6?
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Answer: B. Carbon
Atomic number 6 belongs to carbon (C).
- 95.
What is the chemical symbol of nitrogen?
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Answer: D. N
The symbol of nitrogen is N.
- 96.
Which element has the chemical symbol N?
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Answer: A. Nitrogen
N is the symbol of nitrogen.
- 97.
What is the atomic number of nitrogen?
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Answer: C. 7
Nitrogen has 7 protons, so its atomic number is 7.
- 98.
Which element has the atomic number 7?
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Answer: A. Nitrogen
Atomic number 7 belongs to nitrogen (N).
- 99.
What is the chemical symbol of oxygen?
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Answer: C. O
The symbol of oxygen is O.
- 100.
Which element has the chemical symbol O?
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Answer: C. Oxygen
O is the symbol of oxygen.