Chapter 6 Acids and Alkalis form 2

What is the taste of acid ?

Neutralisation is the reaction between acid and alkali to form.......and......

What is the observation obtained if the lemon juice is tested with blue litmus paper ?

• Remain unchanged

• Blue to green

• Blue to red

• Blue to white

The diagram shows the pH values of some substances.

Which substances can be used to relief the pain of bee sting ?

• Lemon and tooth paste

• Egg and tooth paste

• Lemon and carbonated drink

• Mineral water and carbonated drink

The diagram shows the apparatus set up to ditermined the process of neutralisation between acids and alkali.

The word equation of the process of neutralisation is

Hydrochloric acid + .............. ------------> natrium chloride + water

Which of the following property is correct about the juice of these fruit ?

• Turns red litmus paper to blue

• Has pH value more than 7

• React with metal to produce nitrogen

• Turns hydrogen carbonate indicator from red to yellow

When an acid and alkali react , a solution which has pH value _______ is produced

A few drop of __________ acid might formed a hole on filter paper.

Which sense organ used to detect the product of neutralisation reaction ?