Q37. Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?

 

Q38. Complete the following table.

Found in

Name of acid

Vinegar

 

Ant’s sting

 

Citrus fruits such as oranges, lemons, etc.

 

Curd

 

Spinach

 

Amla, Citrus fruits

 

Tamarind, grapes, unripe mangoes, etc.

 

 

Q39. State few properties of base.

 

Q40. State few properties of acids.

 

Q41 State the differences between acids and bases.

 

Q42. Three liquids are given to you. One is hydrochloric acid; another is sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.

 


Last modified: Sunday, 6 January 2019, 4:42 PM