acid and alkali 1

Is it acid or alkali when the pH is 4 pH

• Acid

• Alkali

• Neutral

Lemon contains acid or alkali or neutral

• Acid

• Alkali

• Neutral

What is an example of neutral

• Vinegar

• Water

• Milk

• Drain cleaner

What is the meaning of the above hazard warning symbol?

• Corrosive

• Explosive

• Toxic

• Radioactive

The color of litmus in acid:

• Red

• Blue

• Purple

• Green

What colour does red litmus paper turn when added to an alkali?

• Blue

• Red

• Green

• Colourless

Which of the following about properties of acid is not true?

• pH less than 7

• Tastes bitter

• Corrosive

• Turns blue litmus paper to red

Which of the following will change the red litmus paper to blue?

• Sodium hydroxide

• Hydrochloric acid

• Sulphuric acid

• Nitric acid

Which of the following indicator will show different colour in acid, neutral and alkali?

• Phenolphtalein

• Universal indicator

• Methyl orange

• Litmus paper

What is the name of this object?

• blue paper

• litmus paper

• red paper