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Acids, Bases and Salts - 1

Test your knowledge of acids, bases, salts, and their chemical properties including indicators, ion formation, and characteristic reactions.

10 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the colour of phenolphthalein indicator in a neutral state?

  1. It is blue in colour.
  2. It is pink in colour.
  3. It is colourless.
  4. It is red in colour.
Question 2 Multiple Choice (Single Answer)

Which of the following substances will produce hydrogen ions on dissolving in water?

  1. HCl
  2. NH4OH
  3. NaOH
  4. KOH
Question 3 Multiple Choice (Single Answer)

Which of the following acids is present in tomatoes?

  1. Oxalic acid
  2. Lactic acid
  3. Citric acid
  4. Acetic acid
Question 4 Multiple Choice (Single Answer)

Which of the following statements is not correct?

  1. A base is a compound which contains either oxide or hydroxide ions.
  2. NH3 when dissolved in water, forms an alkaline solution.
  3. A base is an electron acceptor.
  4. An aqueous solution of a base feels soapy to touch.
Question 5 Multiple Choice (Single Answer)

Which of the following is not a property of acids?

  1. All acids have a sour taste.
  2. Acids turn blue litmus red.
  3. Acids turn red litmus blue.
  4. All acids form H+ ions in water.
Question 6 Multiple Choice (Single Answer)

Methyl orange indicator gives _______ colour in strong acid solution.

  1. blue
  2. pink
  3. green
  4. red
Question 7 Multiple Choice (Single Answer)

Addition of methyl orange to sodium bicarbonate produces __________ colour.

  1. red
  2. green
  3. yellow
  4. orange
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/are true with regard to slaked lime?

  1. Does not change the colour of litmus paper
  2. Does not change the colour of red phenolphthalein
  3. Changes red litmus solution to blue
  4. All of the above
Question 9 Multiple Choice (Single Answer)

Which of the following acts as a proton acceptor?

  1. HCl
  2. HNO3
  3. H2SO4
  4. Ca(OH)2
Question 10 Multiple Choice (Single Answer)

Which of the following substances is not an alkali?

  1. Al(OH)3
  2. Mg(OH)2
  3. Ca(OH) 2
  4. KOH
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