Acidic, Basic and Salts

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed

• Yellow in acid and red in base

• Yellow in both acid and base

• Red in acid and blue in base

• Pink in acid and blue in base

Which of the following set of substances contain acids?

• Grapes, limewater

• Curd, vinegar

• Curd, milk of magnesia

• Vinegar, soap

"Litmus" natural dye is an extract of which of the following

• Beetroot

• Lichen

• China rose

• None of these

Which of the following ion is responsible for the acidic nature of hydrochloric acid?

• Hydroxide ion

• hydrogen ion

• hydrochloride ion

• chloride ion

Ammonia that turns red litmus blue

• Acidic

• basic

• neutral

• can't say

Soap is

• Basic

• Acidic

• Neutral

• Salt

Tartaric acid is found in:

• Vinegar

• Curd

• Amla

• Tamarind

Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution?

• Acid and base

• Acid and neutral

• Base and neutral

• Can't say

Magnesium hydroxide is found in:

• Soap

• lime water

• vegetable

• milk of magnesia

Which of the following is not an an indicator?

• Litmus

• Phenolphthalein

• Turmeric

• None of these