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Question
Which of the following can change the colour of red litmus to blue?
Which of the following can change the colour of red litmus to blue?
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Solution
The correct option is A Sodium hydroxide
Red litmus paper turns into blue when dipped in a basic solution.
Among the given options, only sodium hydroxide is a base. Hence, it changes the colour of red litmus to blue.
Rest of the substances are acidic, hence they do not have any effect on red litmus.
Red litmus paper turns into blue when dipped in a basic solution.
Among the given options, only sodium hydroxide is a base. Hence, it changes the colour of red litmus to blue.
Rest of the substances are acidic, hence they do not have any effect on red litmus.
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