Refer to JEE Physics Mechanical Properties Of Fluids MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Mechanical Properties Of Fluids are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Mechanical Properties Of Fluids
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Mechanical Properties Of Fluids in Full Syllabus.
Mechanical Properties Of Fluids MCQ Questions Full Syllabus Physics with Answers
Question: The term ‘fluid’ is used for
- a) Both liquids and gases
- b) Gases only
- c) Liquids only
- d) A mixture of liquid and gas only
Answer: Both liquids and gases
Question: Select wrong statement about pressure
- a) None of these
- b) Pressure is always compressive in nature
- c) Pressure is a scalar quantity
- d) Pressure at a point is same in all directions
Answer: None of these
Question: Gauge pressure
- a) All of these
- b) May be zero
- c) May be negative
- d) May be positive
Answer: All of these
Question: Figure shows two containers P and Q with same base area A and each filled upto same height with same liquid. Select the correct alternative
- a) px = py
- b) px > py
- c) py > px
- d) None of these
Answer: px = py
Question: The pressure of confined air is p. If the atmospheric pressure is P, then
- a) P is less than p
- b) P is equal to p
- c) P is greater than p
- d) P may be less or greater than p depending on the mass of the confined air
Answer: P is less than p
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) 10
- b) 15
- c) 20
- d) 25
Answer: 10
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A barometer kept in an elevator reads 76 cm when it is at rest. If the elevator goes up with some acceleration, the reading will be
- a) < 76 cm
- b) Zero
- c) > 76 cm
- d) 76 cm
Answer: < 76 cm
Question:
- a) 0.8 N
- b) 1 N
- c) 8 N
- d) 16 N
Answer: 0.8 N
Question: A wooden cube just floats inside water with a 200 gm mass placed on it. When the mass is removed, the cube floats with its top surface 2 cm above the water level. What is the side of the cube ?
- a) 10 cm
- b) 12 cm
- c) 8 cm
- d) 6 cm
Answer: 10 cm
Question: A block of steel of size 5 × 5 × 5 cm3 is weighed in water. If relative density of steel is 7, its apparent weight is
- a) 6 × 5 × 5 × 5 g wt
- b) 5 × 5 × 5 × 7 g wt
- c) 4 × 4 × 4 × 7 g wt
- d) 4 × 4 × 4 × 6 g wt
Answer: 6 × 5 × 5 × 5 g wt
Question:
- a) 800
- b) 1000
- c) 1250
- d) 750
Answer: 800
Question: A cubical block is floating in a liquid with one fourth of its volume immersed in the liquid. If whole of the system accelerates upward with acceleration g/4, the fraction of volume immersed in the liquid will be
- a) 1/4
- b) 1/2
- c) 3/4
- d) 2/3
Answer: 1/4
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A boat carrying a number of stones is floating in a water tank. If the stones are unloaded into water, the water level in the tank will
- a) Fall
- b) Rise
- c) Remain unchanged
- d) Rise or fall depends on the number of stones unloaded
Answer: Fall
Question: A block of ice is floating in a liquid of specific gravity 1.2 contained in a beaker. When the ice melts completely, the level of liquid in the vessel
- a) Increases
- b) Decreases
- c) First increases then decreases
- d) Remain unchanged
Answer: Increases
Question: Two liquids having densities d1 and d2 are mixed in such a way that both have same mass. The density of the mixture is
- a)
- b)
- c)
- d)
Answer:
Question: A barometer tube reads 75 cm of Hg. If tube is gradually inclined at an angle of 30° with horizontal, keeping the open end in the mercury container, then find the length of mercury column in the barometer tube
- a) 150 cm
- b) 75 cm
- c) 92.5 cm
- d) 86.7 cm
Answer: 150 cm
Question: A metallic sphere weighing 3 kg in air is held by a string so as to be completely immersed in a liquid of relative density 0.8. The relative density of metallic is 10. The tension in the string is
- a) 27.6 N
- b) 32.7 N
- c) 42.5 N
- d) 18.7 N
Answer: 27.6 N
More Questions........................................
Question:
- a) Remain same
- b) Rise
- c) Fall
- d) Change according to density of block
Answer: Remain same
Question: Two cubical blocks identical in dimensions float in water in such a way that 1st block floats with half part immersed in water and second block floats with 3/4 of its volume inside the water. The ratio of densities of blocks is
- a) 2 : 3
- b) 3 : 4
- c) 1 : 3
- d) 1 : 4
Answer: 2 : 3
Question: On putting a capillary tube in a pot filled with water, the level of water rises upto a height of 4 cm in the tube. If a tube of half the diameter is used instead, the water will rise to a height of nearly
- a) 8 cm
- b) 11 cm
- c) 4 cm
- d) 2 cm
Answer: 8 cm
Question: A flat plate of area 0.1 m2 is placed on a flat surface and is separated from it by a film of oil 10–5 m thick whose coefficient of viscosity is 1.5 N sm–2. The force required to cause the plate to slide on the surface at constant speed of 1 mm s–1 is
- a) 15 N
- b) 10 N
- c) 20 N
- d) 25 N
Answer: 15 N
Question:
- a)
- b)
- c)
- d)
Answer:
Question: Viscous drag force depends on
- a) All of these
- b) Velocity with which it moves
- c) Size of body
- d) Viscosity of fluid
Answer: All of these
Question: The terminal velocity of a small sized spherical body of radius r falling vertically in a viscous liquid is given by the proportionality
- a)
- b)
- c)
- d)
Answer:
Question: A spherical ball is dropped in a long column of viscous liquid. The speed v of the ball varies as function of time as
- a)
- b)
- c)
- d) None of these
Answer:
Question: Which of the following is not the property of an ideal fluid?
- a) Fluid is viscous
- b) Fluid flow is streamline
- c) Fluid flow is irrotational
- d) Fluid is incompressible
Answer: Fluid is viscous
Question: Water is flowing through a channel (lying in a vertical plane) as shown in the figure. Three sections A, B and C are shown. Sections B and C have equal area of cross section. If PA, PB and PC are the pressures at A, B and C respectively then
- a)
- b)
- c)
- d) None of these
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A tank is filled with water to a height H. A hole is made in one of the walls at a depth D below the water surface. The distance x from the foot of the wall at which the stream of water coming out of the tank strikes the ground is given by
- a) x = 2 [D (H – D)]1/2
- b) x = 2 (gD)1/2
- c) x = 2 [D (H + D)]1/2
- d) None of these
Answer: x = 2 [D (H – D)]1/2
Question:
- a) 1
- b) 2
- c)
- d)
Answer: 1
Question: Water is filled in a tank upto 3 m height. The base of the tank is at height 1 m above the ground. What should be the height of a hole made in it, so that water can be sprayed upto maximum horizontal distance on ground?
- a) 2 m from ground
- b) 1.5 m from ground
- c) 3 m from ground
- d) 1.5 m from base of tank
Answer: 2 m from ground
Question: Soap helps in cleaning clothes, because
- a) It decreases the surface tension of water
- b) It increases the cohesive force between water molecules
- c) It increases the angle of contact
- d) It attracts the dirt particles
Answer: It decreases the surface tension of water
Question: On increasing temperature of a liquid, its surface tension generally
- a) Decreases
- b) Increases
- c) Remains constant
- d) First increases and then decreases
Answer: Decreases
Question: The raincoats are made water proof by coating it with a material, which
- a) Increase the angle of contact
- b) Absorb water
- c) Increase surface tension of water
- d) Decreases the density of water
Answer: Increase the angle of contact
Question: An iron needle slowly placed on the surface of water floats because
- a) Of surface tension
- b) Of its shape
- c) The density of material of needle is less than that of water
- d) It displaces water more than its weight
Answer: Of surface tension
Question: Two water droplets merge with each other to form a larger droplet. In this process
- a) Energy is liberated
- b) Energy is neither liberated nor absorbed
- c) Energy is absorbed
- d) Some mass is converted into energy
Answer: Energy is liberated
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MCQs for Mechanical Properties Of Fluids Physics Full Syllabus
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