A small piece of a certain metal was dropped into a test tube containing an acid. A metal salt was formed with the liberation of a certain gas that burned with a "pop" sound. What could be the gas? A.hydrogen B.nitrogen C.oxygen D.argon
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LINK
Explanation:
http://edudel.nic.in/welcome_folder/question_bank_2009_10/class_X/X-Science(EM)-2009-10(1%E2%80%93192).pdf
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Answer:
hydrogen is a answer and hi to you
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