Chemistry Terminal Review

Components of blood is separated by using _________ method.

• fractional distillation

• centrifugation

• sublimation

• evaporation

The type of bonding seen in a molecule of Oxygen is.

• covalent bond

• electrovalent bond

• metallic bond

• ionic bond

The formula of metal M with atomic number 11 and oxide ion is:

• MO

• MO2

• M2O

• M2O3

Which of the following is a heterogeneous mixture?

• Petroleum

• Pepper water

• Air

• Brass

The number of protons, electrons and neutrons respectively for the element ₁₈X⁴⁰ are:

• 18, 18, 22

• 18, 22, 22

• 18, 22, 40

• 22, 22, 40

Which of the following chemical formula is correctly represented?

• K2CO3

• Mg2O

• Al(SO4)2

• CaCl3

Which of the following methods is used to separate common salt from water?

• Evaporation

• Sublimation

• Filtration

• Solvent extraction

In an electrovalent bond, transfer of electrons takes place from.

• Non-metal to metal

• Metal to cation

• Metal to non-metal

• Metal to anion

The name of HSO4 radical is:

• Carbonate

• Bicarbonate

• Sulphate

• Bisulphate

Assertion: Sodium ion is electronegative. Reason: Sodium loses an electron to have a stable electronic configuration.

• Both assertion and reason are true and reason is the correct explanation of the assertion.

• Both assertion and reason are true but reason is not the correct explanation of the assertion.

• Assertion is true and reason is false.

• Assertion is false and reason is true.