Question

6. On a pH scale, pH of blood is 7.4. What is the nature of blood ? [ ]

a) Neutral b) Highly alkaline c) Slightly alkaline d) Slightly acidic

7. When pH of rain water is less than 5.6, it is called [ ]

a) Acid rain b) Basic rain c) Both a and b d) None

8. Write the formula of household bleach [ ]

a) NaOH b) NaOCl c) Mg(OH)2

d) NH3

9. Tooth decay starts when the pH of the mouth is lower than [ ]

a) 5.5 b) 5.6 c) 6 d) 7.0

10. During indigestion the stomach produces too much acid and this causes pain and irritation. To get

rid of this pain, people use bases called [ ]

a) Antacids b) Antibiotics c) Antiinflamatories d) All​

Answer 1

Answer:

c)

a)

b)

d)

a)

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