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Physics - Mechanical Properties of Fluids

Practise 45 AIIMS previous year questions on Mechanical Properties of Fluids, compiled from papers spanning 2001 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AIIMS tests.

Mechanical Properties of Fluids has been asked in 19 of the 19 years of AIIMS papers analysed (2001–2019), with 45 questions in all. 56% of them were easy, 36% moderate and 9% tough. Most of its questions came from 2019, with 5 questions that year. In the last three years (2017–2019) it had 12 questions across 5 papers, about 2.4 per paper.

The chapter's 7 topics are not weighted equally: Surface tension (15 questions, 33%), Viscosity (9 questions, 20%), and Archmidies Principle (8 questions, 18%) have been asked the most. Surface tension has produced the most tough questions (3).

  1. 1An object floats in water with of its volume outside and in oil of its volume outside. The specific gravity of the oil is26 May, 2019Archmidies Principle
  2. 2A cylinder of height is filled with water. If a small orifice is made at a height of from the ground, the horizontal range of water stream w26 May, 2019Efflux of liquid
  3. 3Assertion : A water drop sticks to the glass surface. Reason : Water have properties of surface tension.26 May, 2019Surface tension
  4. 4If is the surface tension of the liquid, the change in surface energy by splitting a liquid drop of radius into 125 droplets of radius is25 May, 2019Surface tension
  5. 5Assertion : Water drops take spherical shape when falling freely. Reason : Water has minimum surface tension among all liquids.25 May, 2019Surface tension
  6. 6A ring of radius is kept on water surface. Surface tension of water is and mass is . What force required to lift the ring from water surface27 May, 2018Surface tension
  7. 7Assertion : Viscous force is measurement of resistance of a liquid. Reason : Work done by viscous force converts kinetic energy into heat en27 May, 2018Viscosity
  8. 8Assertion : A needle placed carefully on the surface of water may float, whereas a ball of the same material will always sink. Reason : The 26 May, 2018Archmidies Principle
  9. 9Assertion : Surface tension decreases with increases in temperature. Reason : On increasing temperature kinetic energy increases and intermo26 May, 2018Surface tension
  10. 10A solid sphere of volume and density floats at the interface of two immiscible liquids of densities and respectively. If , then the ratio of2017Archmidies Principle
  11. 11Assertion : A piece of ice, with a stone frozen inside it, floats on water in a beaker. When the ice melts, the level of water in the beaker2017Archmidies Principle
  12. 12Assertion : A needle placed carefully on the surface of water may float, whereas the ball of the same material will always sink. Reason : Th2017Archmidies Principle
  13. 13A cylindrical tank is filled with water to level of . A hole is opened at height of from bottom. The ratio of the area of the hole to that o2016Efflux of liquid
  14. 14Viscous force exerted by the liquid flowing between two plates in a streamline flow depends upon the2015Viscosity
  15. 15Assertion: When height of a tube is less than liquid rise in the capillary tube, the liquid does not overflow. Reason: Product of radius of 2014Surface tension
  16. 16Assertion : If optical density of a substance is more than that of water then the mass density of substance can be less than water. Reason :2013Pressure and thrust
  17. 17A spherical body of diameter is falling in viscous medium. Its terminal velocity is proportional to2012Viscosity
  18. 18Assertion : Surface energy of an oil drop is same whether placed on glass or water surface. Reason : Surface energy is dependent only on the2012Surface tension
  19. 19Assertion : Turbulence is always dissipative. Reason : High reynold number promotes turbulence.2012Viscosity
  20. 20Water is flowing with velocity in a cylinder of diameter , it is connected to a pipe with it end tip of diameter , calculate the velocity of2011Hydrodynamics
  21. 21Pressure head in Bernoulli's equation is2011Hydrodynamics
  22. 22Two spherical soap bubbles of radii and in vacuum coaleasce under isothermal conditions. The resulting bubbles has a radius given by2010Surface tension
  23. 23A liquid is kept in a cylindrical vessel which is being rotated about a vertical axis through the centre of the circular base. If the radius2010Hydrodynamics
  24. 24A capillary tube of radius is immersed in water and water rises in it to a height . The mass of water in the capillary tube is . Another cap2010Surface tension
  25. 25Neglecting the density of air, the terminal velocity obtained by a raindrop of radius falling through air of viscosity will be2009Viscosity
  26. 26A thread is tied slightly loose to a wire frame as in figure and the frame is dropped into a soap solution and taken out. The frame is compl2008Surface tension
  27. 27Assertion : A needle placed carefully on the surface of water may float, whereas a ball of the same material will always sink. Reason : The 2008Archmidies Principle
  28. 28In old age arteries carrying blood in the human body become narrow resulting in an increase in the blood pressure. This follows from2007Hydrodynamics
  29. 29Work of \(3.0 10^{-4}\) joule is required to be done in increasing the size of a soap film from \(10 {~cm} 6 {~cm}\) to \(10 {~cm} 11 {~cm}\2007Surface tension
  30. 30If the water falls from a dam into a turbine wheel \(19.6 {~m}\) below, then the velocity of water at the turbines, is (Take \(g=9.8 {~m} / 2007Efflux of liquid
  31. 31Assertion : Machine parts are jammed in winter. Reason : The viscosity of lubricant used in machine parts increase at low temperatures.2007Viscosity
  32. 32By sucking through a straw, a student can reduce the pressure in his lungs to of (density ). Using the straw, he can drink water from a glas2006Pressure and thrust
  33. 33Assertion : A thin stainless steel needle can lay floating on a still water surface. Reason : Any object floats when the buoyancy force bala2006Archmidies Principle
  34. 34A candle of diameter is floating on a liquid in a cylindrical container of diameter as shown in figure. If it is burning at the rate of hour2005Archmidies Principle
  35. 35A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the t2005Pascal's Law
  36. 36Assertion : For Reynold number , the flow of fluid is turbulent. Reason : Inertial forces are dominant compared to the viscous forces at suc2005Viscosity
  37. 37A sphere of mass and radius is falling in a viscous fluid. The terminal velocity attained by the falling object will be proportional to2004Viscosity
  38. 38In old age arteries carrying blood in the human body become narrow resulting in an increase in the blood pressure. This follows from2004Hydrodynamics
  39. 39Assertion : Smaller drops of liquid resist deforming forces better than the larger drops. Reason : Excess pressure inside a drop is directly2004Surface tension
  40. 40Bernoulli's equation is a consequence of conservation of2003Hydrodynamics
  41. 41Two small drops of mercury, each of radius , coalesce to form a single large drop. The ratio of the total surface energies before and after 2003Surface tension
  42. 42A lead shot of diameter falls through a long column of glycerine. The variation of its velocity with distance covered is represented by2003Viscosity
  43. 43Scent sprayer is based on2002Hydrodynamics
  44. 44The property utilized in the manufacture of lead shots is2002Surface tension
  45. 45For liquid to rise in a capillary tube, the angle of contact should be2001Surface tension

Frequently Asked Questions

1.How many questions are available for Mechanical Properties of Fluids?

This chapter includes 45 questions compiled from AIIMS papers spanning 2001 to 2019.

2.Are these questions only from AIIMS, or from other exams too?

These are AIIMS questions specifically for the Mechanical Properties of Fluids chapter. Questions from other exams like NEET or JIPMER are organised separately under their respective exam sections.

3.Is Mechanical Properties of Fluids an important chapter for AIIMS Physics?

Mechanical Properties of Fluids has appeared in 19 of the 19 years of AIIMS papers covered here, with 45 questions across 21 papers - about 2 per paper it appears in.

4.What is the difficulty level of Mechanical Properties of Fluids questions in AIIMS?

Of the 45 questions analysed for this chapter, 56% are easy, 36% moderate and 9% tough. 2019 had the most, with 5 questions.

5.Which topics in Mechanical Properties of Fluids should I focus on?

These topics have carried the most weightage in Mechanical Properties of Fluids:

  • Surface tension - 15 questions (33%)
  • Viscosity - 9 questions (20%)
  • Archmidies Principle - 8 questions (18%)
  • Surface tension has produced the most tough questions (3).
6.Is Mechanical Properties of Fluids's weightage in AIIMS going up or down?

Across all 21 papers analysed, Mechanical Properties of Fluids has averaged about 2.1 questions per paper. In the last three years (2017–2019), that average has stayed about the same, at about 2.4 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.