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Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below :

Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below : Correct Answer 2 and 3 only

The correct answer is 2 and 3 only.

Key Points

  • A Base is a substance which:
    • Is bitter in taste.
    • Turns red litmus paper into blue.
    • Gives hydroxyl ions (OH–) in aqueous solution.
    • Can accept a proton.
    • Can donate electrons.
  • Oxides and hydroxides of metals are bases.
  • All bases do not dissolve in water.
  • An alkali is a base that dissolves in water. Hence Statement 2 is correct.
  • Alkalis are soapy to touch, bitter, and corrosive. Hence statement 3 is correct.
  • All alkalies are bases but all bases are not alkalies because all bases are not soluble in water. Hence Statement 1 is incorrect.
  • The pH of a solution is the negative logarithm of the concentration of hydrogen ions on a mole per liter.

Related Questions

Identify the incorrect statement. a. Acids are sour in taste whereas bases are bitter in taste and soapy to touch. b. Acids turn blue litmus red and bases turn red litmus blue. c. Solutions of substances tat show different colours in acidic, basic and neutral solutions are called indicators. d. An acid and a base neutralise each other to form a salt and a salt is always neutral.
Which of the following statement(s) is/are CORRECT? I. Bases are soapy to touch. II. Bases generate OH– ions. III. Metal oxides dissolve in water to form Acidic solution.
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH- ions. III. Bases are bitter in taste and generate OH- ions.
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A substance 'X' is bitter in taste and has a soapy feel. It is soluble in water. Which of the following statements is true about 'X'?
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.
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2. Bases are bitter and change the colour of red litmus to blue.
3. Litmus is a natural indicator.
Which of the statements given above is/are correct?
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