Acids,Bases and Salt

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

• Yellow in both acid and base

• Yellow in acid and red in base

• Pink in acid and yellow in base.

• Red in acid and blue in base.

What is the effect of Common salt in red litmus paper?

• Blue

• Red

• Green

• Remains same

Paheli and Boojho buy two lemon juice. They told that it was sour. What substances it contain

• Acids

• Bases

• Neutral

• None of the above

Latic acid is found in.

• Curd

• Soap

• Salt

• Oil

Litmus’, a natural dye is an extract of which of the following?

• China rose (Gudhal)

• Blue berries (Jamun

• Lichen

• Beetroot

Which of the following is a mineral acid?

• oxalic acid

• carbonic acid

• acetic acid

• citric acid

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are:

• red and blue.

• Blue and red.

• pink and colourless

• colourless and pink

Milk of Magnesia is used an antacid because.

• It is basic

• It is acidic

• it is neutral

• None of these

The correct way of making a solution of acid in water is to

• mix acid and water simultaneously

• Add water to acid in a shallow container.

• Add acid to water.

• add water to acid

Which of the following is false?

• Base turns Turmeric to brick red in colour

• Acid turns blue Litmus red

• Acid turns Methyl orange indicator to Red orange

• Bases turns China rose (Hibiscus) juice into dark pink (Magenta) in colour