MCQ on Pressure Class 8. We covered all the MCQ on Pressure Class 8 content in this post for free. This MCQ is not just for 8th class students but for all who are looking for fluid pressure MCQ.
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Fluid Pressure MCQ for School Students
The relative density of a liquid can be determined using :
1. Boyle’s law
2. Newton’s law
3. Archimedes principle
4. Pascal’s law
Option 3 – Archimedes principle
As we go to higher altitudes the atmospheric pressure
1. remains constant
2. increases
3. decreases
4. none of these
Option 3 – decreases
Bramah press works on the principle of
1. Pascal’s law
2. Archimedes principle
3. Boyle’s law
4. Bernouli’s principle
Option 1 – Pascal’s law
The widely used instrument to press the bales of cotton is
1. Hydraulic machine
2. Barometer
3. Altimeter
4. Spring balance
Option 1 – Hydraulic machine
The unit of pressure in S.I. system
1. Dyne
2. Pascal
3. Newton
4. Erg
Option 2 – Pascal
An iron sphere of density 8 gm/ce weighs 20 gm in air. Find the weight in water.
1.17
2. 1.75
3. 17.5 gm
4. None of the above
Option 3 – 17.5 gm
Hydraulic machines work under the principle of
1. Boyle’s law
2. Archimedes law
3. Bernouli’s law
4. Pascal’s law
Option 4 – Pascal’s law
Who was able to find the purity of the Gold ?
1. Boyle
2. Pascal
3. Archimedes
4. Bernouli
Option 3 – Archimedes
A stone weighs 15 g in air and 12 g in water. What is its Relative density ?
1.3
2.5
3.27
4.43
Option 2 – 5
Choose the physical quantity difference from others.
1. Density
2. Pressure
3. Thrust
4. Volume
Option 4 – Volume
Choose the correct statement.
1. If the air flows with high speed the pressure exerted by it is larger.
2. If the pressure exerted on an enclosed gas increases density of the gas increases.
3. Density of humid air is greater than of dry air.
4. As altitude increases pressure of atmosphere increases
Option 2 – If the pressure exerted on an enclosed gas increases density of the gas increases.
As altitude increases
1. Pressure increases
2. Density increases.
3. Density decreases
4. Both pressure and density increases
Option 3 – Density decreases
The pair of physical quantities having the same unit is
1. Thrust and pressure
2. Thrust and weight
3. Force and pressure
4. Weight and pressure
Option 2 – Thrust and weight
1 kg.wt = ………
1.9.8 Newtons
2. 0.98 Newtons
3.8.9 Newtons
4. None
Option 1 – 9.8 Newtons
1k pa = ……. pa
1.100
2. 1000
3.10
4. 10,000
Option 2 – 1000
The liquid used in Barometer is
1. water
2. alcohol
3. oil
4. mercury
Option 4 – mercury
The force acting normal to the surface of a body is called
1. Pressure
2. Density
3. Weight
4. Thrust
Option 4 – Thrust
The instrument used in aircraft to measure altitudes is
1. Barometer
2. Thermometer
3. Altimeter
4. Anemometer
Option 3 – Altimeter
Blowing up of that ched roofs is an application of
1. Boyle’s law
2. Pascal’s law
3. Bernouli’s principle
4. Archimedes principle
Option 3 – Bernouli’s principle
We covered all the MCQ on pressure class 8 above in this post for free so that you can practice well for the exam.
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