Everyday Science MCQs (page 7 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 121–140.
- 121.
What is the chemical symbol of silicon?
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Answer: A. Si
The symbol of silicon is Si.
- 122.
Which element has the chemical symbol Si?
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Answer: A. Silicon
Si is the symbol of silicon.
- 123.
What is the atomic number of silicon?
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Answer: B. 14
Silicon has 14 protons, so its atomic number is 14.
- 124.
Which element has the atomic number 14?
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Answer: B. Silicon
Atomic number 14 belongs to silicon (Si).
- 125.
What is the chemical symbol of phosphorus?
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Answer: D. P
The symbol of phosphorus is P.
- 126.
Which element has the chemical symbol P?
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Answer: D. Phosphorus
P is the symbol of phosphorus.
- 127.
What is the atomic number of phosphorus?
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Answer: C. 15
Phosphorus has 15 protons, so its atomic number is 15.
- 128.
Which element has the atomic number 15?
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Answer: C. Phosphorus
Atomic number 15 belongs to phosphorus (P).
- 129.
What is the chemical symbol of sulfur?
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Answer: D. S
The symbol of sulfur is S.
- 130.
Which element has the chemical symbol S?
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Answer: B. Sulfur
S is the symbol of sulfur.
- 131.
What is the atomic number of sulfur?
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Answer: B. 16
Sulfur has 16 protons, so its atomic number is 16.
- 132.
Which element has the atomic number 16?
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Answer: C. Sulfur
Atomic number 16 belongs to sulfur (S).
- 133.
What is the chemical symbol of chlorine?
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Answer: B. Cl
The symbol of chlorine is Cl.
- 134.
Which element has the chemical symbol Cl?
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Answer: C. Chlorine
Cl is the symbol of chlorine.
- 135.
What is the atomic number of chlorine?
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Answer: A. 17
Chlorine has 17 protons, so its atomic number is 17.
- 136.
Which element has the atomic number 17?
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Answer: C. Chlorine
Atomic number 17 belongs to chlorine (Cl).
- 137.
What is the chemical symbol of argon?
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Answer: C. Ar
The symbol of argon is Ar.
- 138.
Which element has the chemical symbol Ar?
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Answer: D. Argon
Ar is the symbol of argon.
- 139.
What is the atomic number of argon?
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Answer: C. 18
Argon has 18 protons, so its atomic number is 18.
- 140.
Which element has the atomic number 18?
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Answer: C. Argon
Atomic number 18 belongs to argon (Ar).