FORM 1 CHEMISTRY QUIZ 1 O'LEVEL

FORM 1 CHEMISTRY QUIZ 1

1. A solution is formed when

A) A solvent is dissolved in a solute.
B) A solute is dissolved in a solvent.
C) A mixture is dissolved in a solvent.
D) Water dissolved a crystal.

... Answer is B)
A solution is formed when "A solute is dissolved in a solvent". "Chromatography"

2. Separation of the constituents for a mixture by fractional distillation is possible when the constituents in the mixture differ in their

A) Boiling point
B) Solubility
C) Melting point
D) Freezing point

... Answer is A)
Separation of the constituents for a mixture by fractional distillation is possible when the constituents in the mixture differ in their "Boiling point".

3. Three states of matter are

A) Element, gas and mixture
B) Element, gas and liquid
C) Solid, liquid and compound
D) Solid, liquid and gas

... Answer is D)
Three states of matter are Solid, liquid and gas.

4. Electrovalent bond is formed by

A) Sharing of electrons
B) Vibration of electrons
C) Transferring of electrons
D) Arrangement of electrons

... Answer is C)
Electrovalent bond is formed by "Transferring of electrons".

5. A luminous flame is formed when

A) The air holes of the Bunsen burner are opened
B) No heat and light is given out
C) The gas does not burn
D) The air holes of the Bunsen burner are closed

... Answer is D)
A luminous flame is formed when "The air holes of the Bunsen burner are closed".

6. The valency of an element with atomic number 10 is

A) 2
B) 3
C) 0
D) 1

... Answer is C)
The valency of an element with atomic number 10 is "0"

7. Chemicals which can easily catch fire are best termed as.

A) Flammable
B) Toxic
C) Explosive
D) Corrosive

... Answer is A)
Chemicals which can easily catch fire are best termed as Flammable

8. The total number of protons and neutrons in the nucleus of an atom is called

A) Valency number
B) Atomic number
C) Molecular number
D) Mass number

... Answer is D)
The total number of protons and neutrons in the nucleus of an atom is called "Mass number".

9. A mixture of ammonium chloride and sodium can be separated by

A) Fractional distillation
B) Sublimation
C) Evaporation
D) Magnetization

... Answer is B)
A mixture of ammonium chloride and sodium can be separated by "Sublimation" .

10. Air is

A) A mixture
B) A compound
C) A solid
D) Corrosive

... Answer is A)
Air is "A mixture".