Acids and Bases

15 Points Per Correct Answer - No time limit  

1. What colour is methyl orange in alkali conditions? Orange Yellow Red Blue

2. Why is universal indicator a better indicator to use than litmus indicator? Litmus indicator can only be used for alkalis. Litmus indicator can only be used for acids. Universal indicator gives the pH of the solution. Universal indicator goes green if something is neutral.

3. Which of the following substances when mixed together will produce table salt (sodium chloride)? Hydrochloric acid and sodium hydroxide. Chlorine and oxygen. Sodium thiosulphate and sulpur dioxide. Nitric acid and sodium hydrogen carbonate.

4. What colour would hydrochloric acid (pH 1) turn universal indicator? Orange Purple Yellow Red

5. If I react magnesium with hydrochloric acid, what gas is produced? Carbon dioxide No gas is produced Oxygen Hydrogen

6. Which of the following is the most accurate way of showing neutralisation? There is no reaction between acids and bases Acid + base ------> neutral solution Acid + base ------> salt + water Acid + base ------> sodium chloride + hydrogen

7. What are the products, if a reaction occurs between nitric acid and sodium hydroxide? No reaction Sodium hydrogenate + water Sodium nitrate + water Sodium nitrate + hydrogen

8. Aluminium will react with Hydrochloric acid. What are the products of this reaction? No reaction Aluminium chloride + hydrogen Hydrogen chloride + aluminium Aluminium + hydrogen

9. What are the products when silver reacts with dilute sulphuric acid? Silver sulphate + hydrogen Silver sulphide + hydrogen Silver sulphate + water Silver doesn't react with dilute sulphuric acid.

10. If a base will dissolve in water, by what name is it better known? Basic Neutralisation Alkali Acid