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Name the instrument used for checking the purity of milk. Explain its making.

Important Questions on Buoyant Force

EASY
Science>Physics>Buoyant Force>Relative Density
If the density of aluminium is 2700 kg/m3, then its value in CGS system is
EASY
Science>Physics>Buoyant Force>Relative Density
A body weighs W1 in air and W2 in water. What is its relative density?
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Science>Physics>Buoyant Force>Relative Density
The volume of 50 g of a substance is 20 cm3. If the density of water is 1 g/cm3, will the substance float or sink?
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Science>Physics>Buoyant Force>Relative Density
The SI unit of relative density is
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Science>Physics>Buoyant Force>Relative Density
The unit of specific gravity is
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Science>Physics>Buoyant Force>Relative Density
What does this statement mean: Relative density of gold is 19.3?
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Science>Physics>Buoyant Force>Relative Density
The relative density of iron is 7.8. What does this statement mean?
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Science>Physics>Buoyant Force>Relative Density
What is the meaning of the statement, the relative density of gold is 19.3?
EASY
Science>Physics>Buoyant Force>Relative Density
Relative density of silver is 10.8. The density of water is 103 kg m-3. What is the density of silver in S.I. units?
EASY
Science>Physics>Buoyant Force>Relative Density
The mass of an object is 70 kg. When completely immersed in water it displaces 2000 cm3 of water. What is the relative density of the material of the object?
EASY
Science>Physics>Buoyant Force>Relative Density
Define relative density. What is the SI unit of relative density?
EASY
Science>Physics>Buoyant Force>Relative Density
Define density. What is the SI unit of density?
EASY
Science>Physics>Buoyant Force>Relative Density
Oil floats on water. This shows that the density of oil is greater than the density of water.
MEDIUM
Science>Physics>Buoyant Force>Relative Density
A piece of cork of mass 4 kg floats in water with 40% of its volume underwater. What is the specific gravity of the cork?
MEDIUM
Science>Physics>Buoyant Force>Relative Density
How does the relative density of a solid substance determine whether it will float or sink in water?
EASY
Science>Physics>Buoyant Force>Relative Density
An oil of relative density 1.1 and volume 2 litre is poured on water. (a) What is the mass of oil, (b) Suppose the oil does not mix with water, which will form the lower layer?
EASY
Science>Physics>Buoyant Force>Relative Density
How does the relative density of a solid substance determine whether it will float or sink in water?
EASY
Science>Physics>Buoyant Force>Relative Density
The relative density of mercury is 13.6. State its density in the SI unit.
HARD
Science>Physics>Buoyant Force>Relative Density
Madhu noted following observations in her notebook:
(i) Weight of the stone in the air =272 gwt
(ii) Weight of the stone in water =192 gwt
(iii) Weight of the stone in salt solution =176 gwt
The relative density of the salt solution is
EASY
Science>Physics>Buoyant Force>Relative Density
What is the unit of relative density ?