Question

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 :

1. 1 only
2. 1 and 3 only
3. 2 and 3 only
4. 3 only

Answer 1

Correct Answer - Option 1 : 1 only

The correct option is option 1, Acid is corrosive in nature, so statement 3 is in correct. 

• 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.
• Water-soluble bases are called alkali.
• All alkalies are bases but all bases are not alkalies because all bases are not soluble in water.
• The pH of a solution is the negative logarithm of the concentration of hydrogen ions on a mole per liter.