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Which of the following statements is true about thermal expansion?a)All substances expand when heated and contract when cooled.b)Only liquids and gases expand when heated.c)Solids expand when heated, but liquids and gases contract.d)Only gases expand when heated.Correct answer is option 'A'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about Which of the following statements is true about thermal expansion?a)All substances expand when heated and contract when cooled.b)Only liquids and gases expand when heated.c)Solids expand when heated, but liquids and gases contract.d)Only gases expand when heated.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is true about thermal expansion?a)All substances expand when heated and contract when cooled.b)Only liquids and gases expand when heated.c)Solids expand when heated, but liquids and gases contract.d)Only gases expand when heated.Correct answer is option 'A'. Can you explain this answer?.

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