1) Which of the following contain alkalis? a) baking soda b) toothpaste c) soap  d) all of a-c 2) Which of the following is/are NOT the propert(ies) of acids? a) have a sour taste b) slippery c) can turn blue litmus paper red 3) Which of the following can we use to compare the pH of black coffee and grape juice? a) pH paper b) pH meter c) Universal indicator d) Blue litmus solution 4) Which of the solutions do/does NOT turn blue litmus paper red? a) Hydrochloric acid b) milk  c) vinegar d) oven cleaner 5) Which of the solutions will give a blue colour when it is tested with a piece of pH paper? a) Hydrochloric acid b) milk  c) vinegar d) oven cleaner  6) Which of the following is/are the disadvantage(s) of using universal indicator to measure the pH of a solution?  a) It takes a long time to get the result. b) It is not suitable for dark-coloured solutions. c) Calibration is needed. 7) Which of following is INCORRECT when 2 g of dilute sodium hydroxide solution is added to 2 g of dilute suphuric acid?  a) Neutralization occurs. b) The mass of the resulting solution is about 4 g . c) A gas is produced 8) Which is NOT the products when 2 g of dilute sodium hydroxide solution is added to 2 g of dilute suphuric acid?  a) sodium sulphate b) water c) hydrogen gas 9) Which of the following can be cleaned with acidic cleaners? a) iron pan b) clay tea pot c) copper pot 10) Which of the following statements about acid rain is /are INCORRECT?  a) Acid rain is mainly caused by carbon dioxide in air. b) acid rain harms living things in water. c) The pH of acid rain is lower than 5.6.

Common acids and alkalis

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