Chapter 5 acids ,bases and salts

Curd ,lemon juice ,orange juice and vinegar contains acid and therefore they are

• Sour

• Bitter

• Sweet

• None of the above

Baking soda and soap tastes

• Bitter

• Sour

• Sweet

• None of the above

The substances which are used to test whether a substance is acidic or basic

• Indicators

• Acid

• Base

• Salt

Litmus paper, Turmeric and china rose come under the category of

• Indicators

• Acid

• Base

• Salt

Litmus is extracted from

• Lichen

• Curcumin

• China rose

• phenolphthalein

You are given a solution and red litmus paper. The red litmus paper turns blue when dipped in the sample. This suggest this sample is:

• Acidic

• Basic

• Neutral

• None of the above

You are given a solution and blue litmus paper. The blue litmus paper turns red when dipped in the sample. This suggest this sample is:

• Acidic

• Basic

• Neutral

• None of the above

You are given a acetic acid and turmeric solution. Acetic acid is added to turmeric solution. The turmeric solution colour changes to

• Red

• No change

• Blue

• None of the above

You are given a soap and turmeric solution. Soap is added to turmeric solution. The turmeric solution colour changes to

• Red

• No change in colour

• Blue

• None of the above

You are given a citric acid and china rose solution. citric acid is added to china rose solution. The china rose solution colour changes to

• Dark pink

• Green

• Blue

• Red