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Q28
(CISF/2017)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following non-metals is present in solid state ?
Result
Your answer:
—
·
Correct:
B
Explanation
Non-metals can exist in solid, liquid, or gaseous states at room temperature (25°C). Based on the options provided:
- Boron (B): It is a solid non-metal (often classified as a metalloid) at room temperature. Other examples of solid non-metals include Carbon, Phosphorus, and Sulfur.
- Bromine (Br): It is the only non-metal that exists in a liquid state at room temperature.
- Krypton (Kr) and Radon (Rn): These are noble gases (Group 18 elements) and exist in the gaseous state at room temperature.
Since the question asks for a non-metal in the solid state, Boron is the correct choice.
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