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प्रश्न
What do you observe when Phenolphthalein is added to sodium hydroxide solution.
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उत्तर
Solution turns pink
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संबंधित प्रश्न
What do you observe when Blue litmus paper is dipped in dilute hydrochloric acid.
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Acidic oxide.
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\[\ce{2Ca[NO3]2->[\Delta]2CaO + 4NO2 + O2}\]
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A peroxide
