6.2 NEUTRALISATION

How to neutralise bacteria in the teeth?

• Rinse

• Using fertiliser

• Using face cleanser

• Using toothpaste

Which of the following solutions is suitable to be used to indicate neutralisation between acid and alkali?

• Iodine solution

• Sodium hydroxide solution

• Colour paper

• Universal indicator

The method used to carry out the neutralisation reaction is called ________________

The reaction between an acid and alkali produces ____________

• salt

• acidic solution

• water

• alkaline solution

Which of the following alkaline is used to neutralise acidic soil?

• Soap solution

• Potassium hydroxide

• Sodium hydroxide

• Calcium hydroxide

.............................. + sodium hydroxide --> sodium chloride + water

• Nitric acid

• Sulphuric acid

• Hydrochloric acid

• Ethanoic acid

Tags

NGSS.MS-PS1-2

Conditioners contain ........................ that neutralize shampoo on hairs.

• acid

• alkali

• vinegar

• natrium hydroxide

Bee sting contain ............................ and can be neutralize using bicarbonate soda.

• alkali

• acid

• vinegar

• soda

..................................... is used to treat water to reduce the acidity of water.

• alkali

• slaked lime

• antacid

• vinegar

In a neutralisation reaction, dilute hydrochloric acid is slowly added to a sodium hydroxide solution. What is the colour change at the end point if the indicator used is phenolphthalein?

• From colourless to pink
• From blue to green
• From pink to colourless
• From green to blue