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NDA2011General AbilityGeneral ScienceActual

Solutions in test tubes containing H ₂ O and aqueous NaOH can be differentiated with the help of:

Options

  1. Ared litmus.
  2. Bblue litmus.
  3. CNa ₂ CO ₃
  4. DHCl (aqueous)

Correct answer

A. red litmus.

Step-by-step solution

The correct answer is option (A).

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