Online TestScience
Liquids
Unit – VII Liquids - PHYSICS
Congratulations - you have completed Unit – VII Liquids - PHYSICS.
You scored %%SCORE%% out of %%TOTAL%%.
Your performance has been rated as %%RATING%%
Your answers are highlighted below.
Question 1 |
Pick the odd one from the following with respect to the properties of a liquid.
They have definite volume | |
Liquids are incompressible | |
They have their own shape | |
They have definite mass |
Question 2 |
Every liquid exerts an upward force on the objects immersed in it. The upward force is called………….
Gravitational force | |
Buoyant force | |
Mechanical force | |
Magnetic force |
Question 3 |
The upward thrust is equivalent to ……………..
hg | |
mg | |
pg | |
hp |
Question 4 |
If the density of a liquid increases, the upthrust will…………
increase | |
Decrease | |
increases or decreases | |
Remain the same |
Question 5 |
Buoyant force acting on an object is equal to the…………..
mass of the solid | |
Weight of the solid | |
Weight of liquid displaced by the object | |
Mass of the liquid displaced by the object |
Question 6 |
…………… take the shape of the container.
solids | |
Liquids | |
Gases | |
None |
Question 7 |
The pressure inside a liquid increases with ……………
mass | |
area | |
volume | |
depth |
Question 8 |
…………. Is equal to the weight of the liquid displaced.
Buoyant force | |
Wt. of the solid | |
Gravitional force | |
Wt. of the liquid |
Question 9 |
A bucket under water in a well is …………….
heavier | |
lighter | |
without change | |
twice as heavy |
Question 10 |
Archimedes discovered
electricity | |
principle of moments | |
gravitational force | |
principle of lever |
Question 11 |
The formula for pressure p=……………..
hg | |
ha | |
hdg | |
ahd |
Question 12 |
Loss of Wt.in water=
Wt. of the immersed solid | |
Wt. of the displaced liquid | |
Zero | |
Wt. of the beaker |
Question 13 |
An iron piece floats in mercury but sinks in water because of
greater density of mercury | |
greater density of water | |
greater density of iron | |
lesser density of iron |
Question 14 |
…………. Is used to test the purity of milk.
Hydrometer | |
Lactometer | |
Test Tube Float | |
Measuring Jar |
Question 15 |
The weight of the body in air is 20 N. Wt. in water is 16N what is its relative density
4 | |
8 | |
1.5 | |
5 |
Question 16 |
A body floats when the upthrust is……….. the weight of the body
lesser than | |
greater than | |
equal to | |
half |
Question 17 |
The principle used in hydrometer is………….
Law of floatation | |
Archimedes principle | |
Bovle’s law | |
Charles Law |
Question 18 |
The ratio of density of the body to the density of water is …………..
Relative density | |
Buoyancy | |
Viscosity | |
Density of body |
Question 19 |
When a body is immersed in a fluid, it experiences an apparent loss of
volume | |
pressure | |
weight | |
Matter |
Question 20 |
A lactometer is a
test tube float | |
constant immersion hydrometer | |
variable immersion hydrometer | |
manometer |
Question 21 |
…………. Has no unit.
Density | |
Relative Density |
Question 22 |
……………. Is used to test the purity of milk.
Lactometer | |
Common hydrometer |
Question 23 |
If the density of a liquid increases, the upthrust will………
increase | |
decrease |
Question 24 |
- Assertion (A) : Liquids are incompressible
- Reason (R) : They show little change in volume even when large compressive forces are applied.
A is correct R is wrong | |
R is correct A is wrong | |
A is correct R does not explain A | |
R explains A |
Question 25 |
- Assertion (A) : when a body floats or immerses in a liquid, the upward force is called buoyant force
- Reason (R) : Density has no limit
A is correct R is wrong | |
A is wrong R is correct | |
Both A and R are wrong | |
R explains A |
Question 26 |
- Assertion (A) : An iron piece floats in mercury but sinks in water
- Reason (R) : The density of mercury is greater than the density of water.
A is correct R is wrong | |
R is correct A is wrong | |
R explains A | |
R does not explain A |
Question 27 |
- Assertion (A) : When a body is immersed in water, its weight in water is greater than its weight in air.
- Reason (R) : Lactometer is used to test the purity of milk.
A is correct R is wrong | |
A is wrong R is correct | |
A is correct R explains A | |
Both A and R are wrong |
Question 28 |
- Assertion (A) : A common hydrometer is of variable immersion type
- Reason (B) : Lactometer is of constant immersion type
A is correct R is wrong | |
R is correct A is wrong | |
R explains A | |
Both A and R are wrong |
Once you are finished, click the button below. Any items you have not completed will be marked incorrect.
There are 28 questions to complete.