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Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsMedium
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Which pair will mainly form salt and water, but gas is not necessarily formed?

Answer and explanation

Correct answer: Acid and base

An acid-base reaction is called neutralisation. In a typical neutralisation, hydrogen ions from the acid combine with hydroxide ions from the base to form water, while the remaining ions form a salt; for example, HCl + NaOH → NaCl + H₂O. Thus option C is correct. Acid with a metal commonly releases hydrogen, and acid with a carbonate or hydrogencarbonate releases carbon dioxide, so those pairs can produce gas.

Related tags

NeutralisationAcid-Base-ReactionSalt-WaterChemical-ReactionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour
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  1. 1What type of substance turns blue litmus paper red?
  2. 2What type of substance turns red litmus paper blue?
  3. 3Which of the following substances acts as a natural indicator?
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  8. 8A student dips red litmus paper into a soap solution. What change will occur in the red litmus paper?
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