1
Question
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the litmus paper reddish. Which of the following would change the colour of this litmus paper to bluish?
(correct answer +1, wrong answer -0.25)
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the litmus paper reddish. Which of the following would change the colour of this litmus paper to bluish?
(correct answer +1, wrong answer -0.25)
Open in App
Solution
The correct option is D An antacid
As the color of litmus paper is turning to blue means that the substance is basic in nature as basic substances turn litmus paper from red to blue.
As we know lemon juice contain citric acid and hence it is acidic in nature.
Vinegar is a mixture of acetic acid and water, hence it is acidic in nature.
Common salt is a neutral salt.
Antacids are basic in nature as they are used to neutralise the acidity. Hence, an antacid is basic in nature and it will turn litmus paper to blue color.
As the color of litmus paper is turning to blue means that the substance is basic in nature as basic substances turn litmus paper from red to blue.
As we know lemon juice contain citric acid and hence it is acidic in nature.
Vinegar is a mixture of acetic acid and water, hence it is acidic in nature.
Common salt is a neutral salt.
Antacids are basic in nature as they are used to neutralise the acidity. Hence, an antacid is basic in nature and it will turn litmus paper to blue color.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
