HARD
7th CBSE
IMPORTANT
Earn 100

Read the information given and answer the questions.
The pH scale shows us how acidic or basic a substance is.

Question Image

As you can see from the pH scale given above, 7 corresponds to neutral (that is, substances that are neither acidic or basic). The pH values of some common substances are given below. Draw a table with pH values as column headings. Write the name of each substance in the proper columns in the pH scale.

Stomach acid - 1

Pure water - 7

Sodium hydroxide - 14

Milk of Magnesia - 10

Milk - 6

Ammonia - 12

vinegar - 5

orange juice - 3

toothpaste - 9

Find out the pH of bleaching powder and tomato juice, and enter them to the pH scale!

Which is the most acidic substance in the list?

Important Questions on Acids, Bases and Salts

HARD
7th CBSE
IMPORTANT

Read the information given and answer the questions.
The pH scale shows us how acidic or basic a substance is.

Question Image

As you can see from the pH scale given above, 7 corresponds to neutral (that is, substances that are neither acidic nor basic). The pH values of some common substances are given below.

Stomach acid - 1

Pure water - 7

Sodium hydroxide - 14

Milk of Magnesia - 10

Milk - 6

Ammonia - 12

vinegar - 5

orange juice - 3

toothpaste - 9

Which is the most basic substance in the list?