The concept of pH was first introduced in 1909 by Soren Peder Lauritz Sorensen, a Danish chemist at Carlsberg Laboratory. If an electrode is calibrated with a solution of known hydrogen ion concentrations, pH can be measured. It measures the acidity or basicity of a solution. It is defined as the co-logarithm of the activity of liquefied hydrogen ions (H +). Let's know more about Pouvoir Hydrogene (pH) Quiz.
1. What is the pH value of pure alcohol?
A. 7.44
B. 7.33
C. 7.8
D. 8
2. Kw is the ionization constant for water and its value is...
A. 1 x 10-7
B. 1 x 107
C. 1 x 1014
D. 1 x 10-14
3. What is the pH value of saliva after the meal?`
A. 4.8
B. 5.8
C. 6.8
D. Less than 4
4. What is the pH value of pure water?
A. Less than 7
B. Greater than 7
C. Equal to 7
D. Greater than 14
5. How we will come to know that a given solution is acidic?
A. If its pH value is less than 7
B. If its pH value is greater than 7
C. If its pH value is less than 5
D. If its pH value is 5
6. What will be the litmus test if the solution is basic?
A. Red litmus will turn to blue
B. Blue litmus will turn to red
C. No change in color
D. It will change into orange pink.
7. What is the neutral value of pH scale?
A. Less than 5
B. Equal to 7
C. Less than 8
D. Less than 10
8. In which of the following field pH scale is important for measurements?
A. Medicine
B. Forestry
C. Food Science
D. All of the above
9. What is the pH value of a strong acid solution?
A. Around 5 to 7
B. Around 3 to 5
C. Around 2 to 1
D. Around 0 to 1
10. Why we measure the pH of seawater?
A. It helps in corrosion research
B. It helps in agricultural activity
C. It helps in fermentation
D. It helps in sterilization
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