Shweta took a 5ml sodium hydroxide in a beaker and dipped a red litmus paper into it. She observed red litmus paper turned blue. Again, she added 5 ml hydrochloric acid in the same beaker and dipped a blue litmus paper into it. The blue litmus paper did not turn red. Why
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Explanation:
when acid is added to Base,neutralusation reaction takes place and neutral salt us obtained.
Hence, Blue litmus turns red.
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