Class 9 Exam > Class 9 Questions > In which one of the following sets is each on...
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In which one of the following sets is each one a solid under ordinary conditions-
- a)Stone, water, ice
- b)Oxygen, Nitrogen, Sulphur
- c)Mercury, Iron, gold
- d)Salt, sugar, chalk
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
In which one of the following sets is each one a solid under ordinary ...
Solid under Ordinary Conditions
Solid is a state of matter where molecules are closely packed together and have a definite shape and volume. In this question, we have to identify the set of substances that are solids under ordinary conditions.
Salt, Sugar, Chalk
The correct answer is option D, which includes salt, sugar, and chalk. All of these substances are solids at room temperature and atmospheric pressure.
Salt is known as table salt or common salt. It is a crystalline solid that is composed of sodium and chlorine ions. It is used as a seasoning and preservative in food, and also in chemical industries.
Sugar is a sweet-tasting crystalline substance that is found in many plants. It is used as a sweetener in food and drinks. Sugar is also used in the production of ethanol, a type of alcohol used as fuel.
Chalk is a soft, white, porous sedimentary rock that is formed from the accumulation of microscopic marine fossils. It is used in the production of cement, as a filler in products such as paint and rubber, and as a writing tool on blackboards.
Stone, Water, Ice
Option A includes stone, water, and ice. While stone is a solid under ordinary conditions, water and ice are not. Water is a liquid at room temperature and atmospheric pressure, while ice is a solid at temperatures below 0°C.
Oxygen, Nitrogen, Sulphur
Option B includes oxygen, nitrogen, and sulfur. Oxygen and nitrogen are gases at room temperature and atmospheric pressure, while sulfur is a solid. However, sulfur is not a solid under ordinary conditions as it has a melting point of 115°C.
Mercury, Iron, Gold
Option C includes mercury, iron, and gold. Mercury is a liquid at room temperature and atmospheric pressure, while iron and gold are solids. However, mercury is not a solid under ordinary conditions as it has a melting point of -39°C.
Conclusion
In conclusion, the correct answer is option D, which includes salt, sugar, and chalk, as they are all solids under ordinary conditions.
Solid is a state of matter where molecules are closely packed together and have a definite shape and volume. In this question, we have to identify the set of substances that are solids under ordinary conditions.
Salt, Sugar, Chalk
The correct answer is option D, which includes salt, sugar, and chalk. All of these substances are solids at room temperature and atmospheric pressure.
Salt is known as table salt or common salt. It is a crystalline solid that is composed of sodium and chlorine ions. It is used as a seasoning and preservative in food, and also in chemical industries.
Sugar is a sweet-tasting crystalline substance that is found in many plants. It is used as a sweetener in food and drinks. Sugar is also used in the production of ethanol, a type of alcohol used as fuel.
Chalk is a soft, white, porous sedimentary rock that is formed from the accumulation of microscopic marine fossils. It is used in the production of cement, as a filler in products such as paint and rubber, and as a writing tool on blackboards.
Stone, Water, Ice
Option A includes stone, water, and ice. While stone is a solid under ordinary conditions, water and ice are not. Water is a liquid at room temperature and atmospheric pressure, while ice is a solid at temperatures below 0°C.
Oxygen, Nitrogen, Sulphur
Option B includes oxygen, nitrogen, and sulfur. Oxygen and nitrogen are gases at room temperature and atmospheric pressure, while sulfur is a solid. However, sulfur is not a solid under ordinary conditions as it has a melting point of 115°C.
Mercury, Iron, Gold
Option C includes mercury, iron, and gold. Mercury is a liquid at room temperature and atmospheric pressure, while iron and gold are solids. However, mercury is not a solid under ordinary conditions as it has a melting point of -39°C.
Conclusion
In conclusion, the correct answer is option D, which includes salt, sugar, and chalk, as they are all solids under ordinary conditions.
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In which one of the following sets is each one a solid under ordinary ...
In the different sets of substance given above , salt , sugar are solid under ordinary temperature. As mercury, water , oxygen and Nitrogen are not solids.
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In which one of the following sets is each one a solid under ordinary conditions-a)Stone, water, iceb)Oxygen, Nitrogen, Sulphurc)Mercury, Iron, goldd)Salt, sugar, chalkCorrect answer is option 'D'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about In which one of the following sets is each one a solid under ordinary conditions-a)Stone, water, iceb)Oxygen, Nitrogen, Sulphurc)Mercury, Iron, goldd)Salt, sugar, chalkCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In which one of the following sets is each one a solid under ordinary conditions-a)Stone, water, iceb)Oxygen, Nitrogen, Sulphurc)Mercury, Iron, goldd)Salt, sugar, chalkCorrect answer is option 'D'. Can you explain this answer?.
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