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X is an element in the form of a powder. X burns in oxygen and the product is soluble in water. The solution is tested with litmus. Write down the answers for the following questions from the above information and give reasons. i) If X is a metal, then which colour will litmus turn ? ii) If X is a non-metal, then which colour will litmus turn ? iii) If X is a reactive metal, what gas will be released with dilute sulphuric acid ? |
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Answer» i) If X is a metal, then the litmus turns into blue because metal reacts with oxygen and forms metallic oxide and aqueous solution of metallic oxide ore basic in nature. ii) Mf X is a non-metal, then the litmus turns into red because non-metal reacts with oxygen and forms non-metallic oxide and aqueous solution of nonmetallic oxide ore acidic in nature. iii) If X is a reactive metal, then it releases hydrogen gas from sulphuric acid because more reactive metal displaces hydrogen from acid. |
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