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MODEL ENTRANCE TEST PAPER
BRITISH SECTION
SUBJECT: CHEMISTRY
GRADE: 11
TOTAL MARKS: 30
I. Choose the one you consider correct...
[10 M]
1. Which observation provides the best evidence that a solid is a pure substance?
A. It all dissolves in water
C.It is all one color
B .It has a crystalline structure
D.It melts at a fixed temperature
2. Which are the correct symbols for the elements chlorine, Nitrogen and bromine?
Chlorine
Nitrogen
Bromine
A
C
N
B
B
C
N1
Br
C
Cal
N
Br
D
Cl
Ni
B
3. Water is formed when 48 g of oxygen combine with 6g of hydrogen? What mass of oxygen
combines with 1.5 g of hydrogen?
A
8g
B 12g
C
42g
D 54g
4. In the electrolytic manufacture of aluminium which substance is used to dissolve aluminium
oxide?
A
Acid
B
Alkali
C
Cryolite
D
Graphite
5. A salt is formed when there is a reaction between
A. Copper (11) oxide and carbon
B. Hydrogen and oxygen
C. Magnesium and steam
D. Sodium hydroxide and hydrochloric acid
6. Which substance is not an atmospheric pollutant?
A. Argon
B. Carbon monoxide
C. An oxide of nitrogen
D. Sulphur dioxide
7. Which of the following contains only carbon and hydrogen?
A. Ethanoic acid
B.Ethanol
C. Graphite
D. methane
8. The atoms of the isotopes of an element all contain the same number of
A. Protons
B.Neutrons
C.Electrons and neutrons
D.Protons neutrons and electrons
9. Which gas is released when magnesium reacts with hydrochloric acid?
A. Carbon dioxide
B. Chlorine
C. Hydrogen
D. Oxygen
10. A television news programme shows an explosion at a flour mill. What could have
increased the risk of such an explosion?
A. Adding salt to the flour
B. Employing more staff in the mill
C. Grinding the flour more finely
D. Opening the windows
II. Fill in the blanks
[5 M]
1) An element in Group ………………. Can easily be cut with a knife
2) ……………….. Gas is produced by heating limestone.
3) Nitrogen and hydrogen react together to form …………….
4) Elements are arranged in the increasing order of their …………………………. in the
periodic Table.
5) Chalk can be separated from a mixture of chalk and water by ……………
2
III. Match the following
[5 M]
1. Ink
polyethene
2. Ethene
Iron
3. Halogens
Fermentation
4. Ethanol
Chromatography
5. Hematite
Group VII
IV) Answer the following questions
[5 M]
1) Give two Uses of each
[2 M]
a) Copper
…………………………………………………………………………………
b) Aluminium
…………………………………………………………………………………
2) Give a balanced chemical equation for the complete combustion of methane in air?
……………………………………………………………………………………. [1M]
3) the products of electrolysis of concentrated aqueous sodium chloride solution are
………………, ………………. and ………………
3
[2 M]