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Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsMedium
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In which reaction can salt, water, and carbon dioxide all be formed?

Answer and explanation

Correct answer: Acid and metal carbonate

An acid reacting with a metal carbonate produces all three named products: salt, water, and carbon dioxide. For example, 2HCl + CaCO₃ → CaCl₂ + H₂O + CO₂. An acid and a metal generally produce salt and hydrogen; an acid-base reaction produces salt and water; and an acid-metal oxide also generally produces salt and water. Hence A is the only complete match.

Related tags

Acid Carbonate ReactionSaltWaterCarbon DioxideAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour
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10 more MCQs
  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?
  4. 4What is the general nature of an aqueous soap solution?
  5. 5Which of the following substances turns red litmus paper blue?
  6. 6What is the nature of a solution whose pH is less than 7?
  7. 7At 25°C, a solution with a pH greater than 7 is of which nature?
  8. 8A student dips red litmus paper into a soap solution. What change will occur in the red litmus paper?
  9. 9Which gas is generally produced when dilute acids react with active metals?
  10. 10A student dips red litmus paper into a soap solution. What will be the colour of the litmus paper?
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