TEST 8 ( X - ACIDS BASES AND SALTS )

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EFFORTS NEVER FAIL

NAME : *

1. If the pH of a solution is 13. This means that it is *

1 point

Strongly acidic

Strongly basic

Weakly acidic

Weakly basic

2. Water soluble bases are known as *

1 point

Neutral

base

acid

alkali

3. Tooth decay starts when the pH of the mouth is lower than *

1 point

5.8

5.5

5.7

6.5

4. The process of dissolving an acid or a base in water is an *

1 point

Exothermic process

Endothermic process

A and B

None of these

5. Bases which are soluble in water are called *

1 point

Alkalies

Acidic

Basic

Neutral

6. Substances whose odour changes in acidic or basic are called which are soluble in water are called *

1 point

pH paper

Synthetic indicators

Olfactory indicators

Litmus test

7. Sodium hydrogen carbonate is an ingredient in *

1 point

Sugar

Antacids.

Vinegar

Washing soda

8. Which of the following substance has the lowest PH value? *

1 point

Sugar

Tomato juice

Vinegar

Washing soda

9. In neutralization reaction is formed with water. *

1 point

acid

base

salt

ice

10 . H2O + ...... → H3O+ *

1 point

H+

OH-

H2O

H3O+

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