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Science Grade 8
Test Description: Science
Instructions: Answer all questions to get your test result.
1) This formula C6H12O6 is -
A
Water, Hydrogen Carbon
B
Oxygen, Carbon and Hydrogen
C
Hydrogen, Oxygen Carbon
D
Carbon, Hydrogen and Oxygen
2) The random movement of particles of gas and a liquid is known as
A
diffusion
B
sublimation
C
brownian motion
D
kinetic energy
3) The chemical property of matter is
A
the state in which it is found in its natural state
B
the correctness
C
the boiling point
D
the ability to react with oxygen gas
4) Which causes the high density of solids
A
The forces are weak
B
The energy of the particles are very high
C
The forces between particles are weak
D
The particles are packed closely together
5) Mixture
A
none
B
copper
C
Iron ore only
D
copper and iron ore
6) Increases pressure
A
heating only
B
none
C
cooling
D
cooling and heating
7) Compound
A
KMnO4 only
B
None
C
O2 and KMnO4
D
O2
8) Separated by physical means
A
None
B
KMnO4
C
O2
D
Cooling
9) Physical property
A
Boiling point
B
none
C
both
D
Density
10) Product of combustion reaction
A
All
B
Carbon monoxide only
C
Iron
D
Ore
11) Yellow element
A
Sulfur only
B
Carbon
C
Carbon and Sulfur
D
Neither
12) Choose either - Element, Compound, Mixture or Alloy: ring made of 24 carat gold
A
Element
B
Mixture
C
Compound
D
Alloy
13) Choose either - Element, Compound, Mixture or Alloy: Air we breathe
A
compound
B
Element
C
Alloy
D
Mixture
14) Choose either - Element, Compound, Mixture or Alloy: brass paper weight
A
Compound
B
Element
C
Mixture
D
Alloy
15) Choose either - Element, Compound, Mixture or Alloy: the gas produced when a metal reacts with an acid
A
Compound
B
Element
C
Mixture
D
Alloy
16) Choose either - Element, Compound, Mixture or Alloy: The earth's most common solvent
A
Element
B
Alloy
C
Mixture
D
Compound
17) Following elements Ne and B
A
Boron
B
Neither
C
Neon and boron
D
boron
*select an answer for all questions
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