FORM 1 CHEMISTRY QUIZ 2 O'LEVEL

FORM 1 CHEMISTRY QUIZ 2

1. The components of the ink are best separated by

A) Filtration
B) Sublimation
C) Chromatography
D) Evaporation

... The answer is C)
The components of the ink are best separated by "Chromatography"

2. The Element Q of atomic number 15 is found in:

A) Group III and period 3
B) Group I and period 2
C) Group III and period 4
D) Group IV and period 1

... The answer is A)
The Element Q of atomic number 15 is found in Group III and period 3.

3. The electronic configuration of Al is

A) 2:7:1
B) 2:8.2
C) 2:8:3
D) 2:8:4

... The answer is C)
The electronic configuration of Al is 2:8:3.

4. A certain liquid dissolves copper (11) sulfate to form a blue solution. This liquid is likely to be

A) Hydrochloric acid
B) Liquefied Oxygen
C) Water
D) Nitric acid

... The answer is C)
A certain liquid dissolves copper (11) sulfate to form a blue solution. This liquid is likely to be "Water".

5. Milk is a mixture of water and fals. The mixture of this type is called

A) Solution
B) Suspension
C) Solvent
D) Solute

... The answer is B)
Milk is a mixture of water and fals. The mixture of this type is called Suspension

6. Flammable chemicals are the ones which can

A) Catch fire easily
B) Explode easly
C) Poison you
D) Burn your skin

... The answer is A)
Flammable chemicals are the ones which can Catch fire easily

7. How many Protons, Neutrons, and Electrons are there in an atom represented by the symbol Cl respectively.

A) 35,17,18
B) 17,18,17
C) 17,35,18
D) 18,17,35

... The answer is B)
How many Protons, Neutrons, and Electrons are there in an atom represented by the symbol Cl respectively "17,18,17"

8. Permanent hardness of water can be caused by

A) Presence of bicarbonates of calcium and magnesium
B) Sulfates of magnesium and calcium
C) Sulfates of sodium and magnesium
D) Sulfates and bicarbonates of magnesium and calcium

... The answer is B)
Permanent hardness of water can be caused by Sulfates of magnesium and calcium

9. The valency of an element with atomic number 8 is

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

... The answer is C)
The valency of an element with atomic number 8 is 2

10. Which of the following sets of symbols represents isotopes?

A) ¹⁶ ₈ X , ¹⁷ ₈ X , ¹⁸ ₈ X .
B) ¹⁶ ₈ Z , ¹⁷ ₈ Z , ¹⁸ ₉ Z .
C) ¹⁶ ₇ W , ¹⁶ ₈ W , ¹⁶ ₉ W .
D) ¹⁶ ₇ Y , ¹⁷ ₈ Y , ¹⁸ ₉ Y .

... The answer is A)
The following sets of symbols represent isotopes ¹⁶ ₈ X , ¹⁷ ₈ X , ¹⁸ ₈ X .