2025 2nd term Exam on Chemistry JSS 2

Welcome to your 2025 2nd term Exam on Chemistry JSS 2

Liquids that do NOT mix are said to be

Air is a mixture of

Which one of the following techniques would best be used to separate soil and water?

Two or more substances mingled together, but not chemically combined are known as a

Dyes in water soluble markers may be separated by means of

The process of evaporating a liquid and then condensing the vapour by cooling it is known as ?

Which one of the following is NOT a mixture?

Miscible liquids that have different boiling points can be separated by

magnet could be used to separate

The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as

Liquids that do not mix may be separated by using

The depletion of metal parts due to the reaction between moisture and oxygen is called

The burning of materials in the presence of air is called

All physical changes are

The method of separation used in refining crude oil is known as

The coating of zinc on iron.

The type of weighing balance used in a modern laboratory is called

Which of the following pieces of chemistry lab equipment produces a flame from gas that is used for heating substances?

What is a mortar and pestle used for?

Which of the following pieces of chemistry lab equipment is used to transfer liquids from one place to another?

Subjective

1.......and 2.........are types of litmus paper.

3.......... lab equipment is used to hold the burette

..........is used to turn or stir a mixture.

5............is used to check the temperature of a substance during heating.

6. The liquid gotten distillation is called.......

7. ........and 8.........are common accidents in a chemistry laboratory.

9.............and 10...........are types of solutions

Essay. Answer All

1a. Explain the process of Fractional distillation 1b. Mention 2 areas where Fractional distillation is used.

2a. What is a Solution? 2b List and explain 3 types of solutions

3.In a tabular form, mention 8 laboratory equipment and their uses.

4a.Explain Chromatography 4b. Mention 2 types of chromatographic methods 4c Draw a paper chromatography

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