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Physics — Second Secondary

Physics — Second Secondary

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Physics — Second Secondary 2026/2027

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Question bank: Chapter 4: Hydrodynamics

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  • Questions count: 5
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1.
Which statement is correct?
Liquids are easily compressed, gases are not
Gases are easily compressed, liquids are almost incompressible
Both are incompressible
Both are easily compressed
2.
When a car battery discharges, the density of the electrolyte:
increases
decreases
stays the same
becomes zero
3.
The normal density of human blood is about:
500 kg/m3
1050 kg/m3
2500 kg/m3
13 600 kg/m3
4.
A blood density lower than normal may indicate:
a higher concentration of blood cells
a lower concentration of blood cells (anaemia)
high pressure
a normal state
5.
Gold of 14 carat is less dense than pure gold because:
gold is lighter when heated
it is mixed with lighter metals
its volume is smaller
it contains water
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