A solution turns red litmus into blue; its pH is likely to be (1) 1 (2) 4 (3) 5 (4) 10

Answer: (4)

Changing the colour of red litmus paper to blue is a general property of the alkaline solution. pH scale gives information about the acidic basic and neutral solution.

  • Solutions having a value of pH ranging 0 to 7 on pH scale are termed as an acidic solution.
  • Solutions having a value of pH ranging 7 to 14 on pH scale are known as basic solutions.
  • Solutions having the value of pH equal to 7 on pH scale are known as neutral solutions.

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