Sience fun

Acid turns

• red litmus blue

• Blue litmus red

• both the limus papers change colour

• does not change

Neutralization reaction is

• reaction with acid and water

• reaction with base and water

• reaction with acid and base

• reaction with base and salts

The antacid normally prescribed by the doctor is

• calcium hydroxide

• aluminium hydroxide

• iron chloride

• magnesium hydroxide

The chemical name for vinegar is

• Acetic acid

• oxalic acid

• tartaric acid

• lactic acid

Milk contains

• citric acid

• lactic acid

• Acetic acid

• oxalic acid

Why does the clothes turn red when the soap is applied on turmeric stain?

• soap is an acid

• soap is a base

• soap is neutral

• turmeric is acid

Mostly salts are

• acidic

• basic

• neutral

• none of these

Acid rain is due to

• presence of toxic gases

• presence of hydrogen gas

• presence of dust and smoke

• presence of storm

lemon contains

• Acetic acid

• citric acid

• sodium hydroxide

• calcium hydroxide

Phenolphthalein is an

• acid

• base

• salt

• indicator