Question

Which among the following is not a property of acid?

• A. PH < 7.
• B. They furnish H+ ions in aqueous solutions.
• C.
  • Turning blue litmus indicator red.
• D. Turning red litmus indicator blue

Answer 1

The correct option is D Turning red litmus indicator blue

• Acids change the colour of litmus from blue to red.
• They convert the colour of Methyl Orange from Orange/Yellow to Pink.
• Acids turn the pink colour of Phenolphthalein to colourless.
• Acids can conduct electricity.
• Some Acids are highly corrosive in nature which means that they corrode.
• Acids tend to evolve hydrogen gas whilst reacting with an active metal such as Zn, Mg, etc.
• They furnish $H^{+}$ ions in water.
• Acids lose their acidity when mixed with a base.
• When equal amounts of acid and base are combined the process of neutralization occurs and salt and water is formed,
• The pH value of acid is from 0-7.
• Acids are sour in taste.

Hence option D is incorrect option.