Acids, Bases and Salts MCQ Quiz

8 questions

1. Which gas is evolved when a metal reacts with a dilute acid?

   1. Oxygen
   2. Hydrogen
   3. Carbon dioxide
   4. Nitrogen

2. The pH of a neutral solution is:

   1. 0
   2. 7
   3. 14
   4. 10

3. Which indicator turns pink in a basic solution and stays colourless in an acidic solution?

   1. Methyl orange
   2. Litmus
   3. Phenolphthalein
   4. Universal indicator

4. What is the common name for sodium hydrogen carbonate?

   1. Washing soda
   2. Baking soda
   3. Bleaching powder
   4. Caustic soda

5. Plaster of Paris is chemically known as:

   1. Calcium sulfate hemihydrate
   2. Calcium carbonate
   3. Calcium oxide
   4. Calcium hydroxide

6. Which of these is used to test for the presence of CO₂ gas?

   1. Litmus solution
   2. Lime water
   3. Phenolphthalein
   4. Universal indicator

7. The reaction between an acid and a base is called:

   1. Oxidation
   2. Neutralization
   3. Displacement
   4. Decomposition

8. Which of these has the highest pH?

   1. Lemon juice
   2. Pure water
   3. Baking soda solution
   4. Battery acid

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