lesson 1 - unit 1 - senior 1

To make 0.1 g/mL salt solution exactly you can use

• digital balance

• graduated cylinder

• volumetric flask

• round bottom flask

To calculate the concentration of an acid by using alkali with known concentration and volume, we can use

• dropper

• burette

• pipette

• beaker

When adding 10 mL of concentrated sodium hydroxide solution on the same quantity of lemon juice which contains diluted ascorbic acid, the pH value will be

• 1

• 4

• 7

• 9

To transfer 10 mL of a solution from one place to another, we can use

• pipette

• burette

• digital balance

• volumetric flask

Which of the following tools can resist heat

• round bottom flask

• dropper

• graduated cylinder

• burette

The science that is interested in studying the chemical composition of the rocks is

• physical chemistry

• astronomy

• geochemistry

• Nano chemistry

To measure 2.22 g it’s better to use a digital balance with accuracy

of ............g

• ± 5

• ± 1

• ± 0.1

• ± 0.01

In agricultural field chemistry can be used

• to detect acidity

• in leather tanning

• in energy production

• to filter the air from pollution