Chemistry and Mearsurement

The photosynthesis is one of the important biological processes that occurs in plants, bacteria and algae, and the science that contributes to understanding this process is ..........

• Analytical chemistry.

• physical chemistry

• Biochemistry.

• Nuclear chemistry.

The science that contributes to explain the following change: A_(g) +596.16 KJ/mol → A⁺ _(S)

• Nuclear chemistry

• physical chemistry

• Biochemistry

• environmental chemistry

Yellow spots appear on the leaves of some plants due to manganese deficiency, which is essential in the photosynthesis process and to treat this imbalance, manganese sulphate is used .This is an example of integration between the science of chemistry and---------------

• Environmental Chemistry

• Analytical Chemistry

• Physical chemistry

• Agriculture.

The return back of the blood from the lower limbs of the body to the heart, carrying the combustion wastes is explained by the following branches of science-------

• A

• B

• C

• D

In titration process , we need---------------

• burette and volumetric flask

• burette and conical flask

• pipette and conical flask

• burette and round bottom flask

To determine the density of water we need-------------

• round bottom flask and sensitive balance

• burette and sensitive balance

• graduated cylinder and sensitive balance

• pipette and sensitive balance

Water can be separated from the dissolved sodium chloride solution by the distillation process, which is used

• volumetric flask

• burette

• graduated cylinder

• round bottom flask

6;,,

]

]

]

]

Which of the following tools is used to prepare a solution of sodium hydroxide, its concentration 0.5 mol/l.

• round bottom flask

• burette

• volumetric flask

• conical flask

During the titration process of sodium hydroxide solution, a volume of 10ml of it must be transferred to the conical flask, which of the following tools is most appropriate for this

• beaker

• pipette

• round bottom flask

• graduated cylinder

To determine the concentration of H⁺ ion in solution accurately , Which is the suitable tool?

• PH test paper

• burette

• graduated cylinder

• PH-meter