TOPIC : Acids Bases and Salts.
1. Name the acid/base present in the following.
a) Apple e) Tamarind
b) Calamine lotion f) curd
c) Soda g) Urine
d) Eno h) Vinegar
2. Give reasons:
a) Calamine solution is rubbed on the skin when ant bites.
__________________________________________________________________________________________
__________________________________________________________________________________________
b) Vinegar is used as a preservative in pickles, sauces etc.
__________________________________________________________________________________________
__________________________________________________________________________________________
c) Acids are generally stored in glassware.
__________________________________________________________________________________________
__________________________________________________________________________________________
d) We should wear gloves while handling bleach.
__________________________________________________________________________________________
__________________________________________________________________________________________
3. What is neutralization reaction?
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
4. Complete the table given below:
5. Explain how neutralization is helpful in treating indigestion.
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
__________________________________________________________________________________________
6. Name two natural indicators and two synthetic indicators.
__________________________________________________________________________________________
_________________________________________________________________________________________
7.Complete the following word equations:
a) Hydrochloric Acid + Potassium Hydroxide -----------> __________________ + _______________
b) Hydrochloric Acid + Sodium Hydroxide -----------> ____________________ + _______________
Please click on below link to download CBSE Class 7 Science Acid Bases And Salts Worksheet Set C