What is the chemical nature of acids>

• Basic

• Who knows

• Acidic

• It dosen't have one

Examples of acidic substances

• Curd

• Lemon juice

• Baking Soda

• Cucumber

What are bases?

• The substances which are bitter in taste and soapy in touch.

• The substances which are sour in taste.

• Acidic

• Basic

Indicators are not used to test a substance whether it is acidic or basic: True or False?

• True

• False

Which of these is a base?

• Hydrochloric acid

• Citric acid

• Oxalic acid

• Sodium hydroxide

Ascorbic acid is found in citrus fruits, ________ , etc.

In a substance, if the blue litmus paper turns red, then the substance is said to be _________.

• Basic

• Acidic

• Neither

• Both

Which of these are natural indicators?

• Turmeric

• China rose

• Litmus paper

• Phenolphthalein

• Methyl orange

If china rose extract is added to a substance and it turns to dark pink (magenta), what kind of substance is that?

• Neutral

• Acidic

• Basic

• Both

What is neutralisation?