Acid,base and salt

Acids taste

• sour

• sweet

• bitter

• salty

Bases taste

• sweet

• sour

• bitter

• salty

Which of the following feel soapy on touching?

• Acid

• Base

• Salt

• None of these

Which of the following is a natural indicator?

• China rose petal

• Turmeric

• Litmus

• All of these

Which of the following is basic in nature?

• Lime water

• Baking soda

• Both (a) and (b)

• Lemon juice

Litmus is extracted from

• curd

• grapes

• lichens

• cabbage

When a drop of vinegar solution is put on the blue litmus paper, it turns

• red

• purple

• yellow

• orange

When we suffer from acidity, we should take

• iron tonic

• vitamins

• antacid

• lactocalamine

Calcium hydroxide is found in

• window cleaner

• lime water

• soap

• lime juice

Neutralisation reaction is a

• physical and reversible change

• physical and irreversible change

• chemical and reversible change

• chemical and irreversible change