2025 First term mid-term test on Chemistry Jss3

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Welcome to your 2025 First term mid-term test on Chemistry Jss3

1. Substances that have bitter taste are said to be

2. Acidity means

3. The range of PH meter is

4. When little amount of water is present in an acid, it is called

5. Acids found in apple is called

6. Litmus is used to test either the substance is

7. The chemical formula of hydrogen tetraoxosulphate (vi) acid is

8. Which of the following alkalis is corrosive?

9. Find the PH, if the hydrogen concentration is 1.8*10-4M

10. What is the value of basicity in H3PO4?

Subjectives

1. .........and2. ........are the classes of acids.

3. ............is the number of hydroxide ions in one mole of a base.

4. .........and 5. .........are types of titrations.

Essay. Answer Only 2 Questions

1a. Define an Acid. 1b. List and explain 2 types of acids. 1c. State 2 physical properties of an acid.

2a. What is a PH meter? 2a. Draw and label a PH scale.

3a. Explain Basicity of an acid. 3b. Mention 2 examples of dibasic acids. 3c. State 2 physical properties of a base.

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