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Physics - Mechanical Properties of Fluids

Practise 28 BITSAT previous year questions on Mechanical Properties of Fluids, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Mechanical Properties of Fluids has been asked in 16 of the 16 years of BITSAT papers analysed (2009–2024), with 28 questions in all. 32% of them were easy, 39% moderate and 29% tough. Most of its questions came from 2010, with 3 questions that year. In the last three years (2022–2024) it had 5 questions across 5 papers, about 1 per paper.

The chapter's 6 topics are not weighted equally: Surface tension (12 questions, 43%), Archmidies Principle (5 questions, 18%), and Viscosity (5 questions, 18%) have been asked the most. Surface tension has also led over the last five years, with 4 questions. Surface tension has produced the most tough questions (3).

  1. 1A cube of ice floats partly in water and partly in kerosene oil. The radio of volume of ice immersed in water to that in kerosene oil (speci2024 (Memory Based Paper 1)Archmidies Principle
  2. 2Pressure inside two soap bubbles are 1.01 and 1.02 atmosphere, respectively. The ratio of their volumes is :2024 (Memory Based Paper 2)Surface tension
  3. 3If 1000 droplets of water of surface tension 0.07 . having same radius each, combine to from a single drop. In the process the released surf2023 (Memory Based Paper 1)Surface tension
  4. 4Eight equal drops of water are falling through air with a steady speed of . If the drops coalesce, the new velocity is:2023 (Memory Based Paper 2)Viscosity
  5. 5A capillary tube is attached horizontally to a constant heat arrangement. If the radius of the capillary tube is increased by , then the rat2022Surface tension
  6. 6A U - shaped tube contains a liquid of density rho and it is rotated about the left dotted line as shown in the figure. Find the difference 2021Hydrodynamics
  7. 7A spherical drop of radius is divided into eight equal droplets. If surface tension is , then the work done in this process is2021Surface tension
  8. 8A body of density is dropped from rest at a height h into a lake of density where neglecting all dissipative forces, calculate the maximum d2020Archmidies Principle
  9. 9A vessel with water is placed on a weighing pan and it reads . Now a ball of mass and density is sunk into the water with a pin of negligibl2020Archmidies Principle
  10. 10Two separate soap bubbles of radii 3 10 - 3 m and 2 10 - 3 m respectively, formed of same liquid (surface tension 65 10 - 2 N m - 1 ) come t2019Surface tension
  11. 11A block of wood floats in water with ( 4 / 5 ) th of its volume submerged. If the same block just floate in a liquid, the density of liquid 2018Archmidies Principle
  12. 12If a drop of liquid breaks into smaller droplets, it results in lowering of temperature of the droplets. Let a drop of radius R , break into2018Surface tension
  13. 13An ice-berg of density 900 kgm - 3 is floating in water of density 1000 kgm - 3 . The percentage of volume of ice-berg outside the water is2017Archmidies Principle
  14. 14Work done in increasing the size of a soap bubble from radius of ( 3 to 5 ) cm is nearly (surface tension of soap solution = 0 . 03 Nm - 1 )2017Surface tension
  15. 15The approximate depth of an ocean is . The compressibility of water is and density of water is . What fractional compression of water will b2016Pressure and thrust
  16. 16A capillary tube of radius is immersed vertically in a liquid such that liquid rises in it to height (less than the length of the tube). Mas2016Surface tension
  17. 17Water is flowing on a horizontal fixed surface, such that its flow velocity varies with (vertical direction) as If coefficient of viscosity 2015Viscosity
  18. 18A glass capillary tube of internal radius is immersed in water. The top end of the tube projected by above the surface of the water. At what2015Surface tension
  19. 19The work done in blowing a soap bubble of surface tension from radius to radius is2014Surface tension
  20. 20A ball whose density is falls into water from a height of . To what depth does the ball sink?2013Pascal's Law
  21. 21An ice block floats in a liquid whose density is less than water. A part of block is outside the liquid. When whole of ice has melted, the l2012Pascal's Law
  22. 22A large drop of oil (density and viscosity ) floats up through a column of another liquid (density and viscosity ). Assuming that the two li2012Viscosity
  23. 23Viscosity is the property of a liquid due to which it :2011Viscosity
  24. 24An air bubble of volume is released by a fish at a depth in a lake. The bubble rises to the surface. Assume constant temperature and standar2011Pressure and thrust
  25. 25A spherical ball is dropped in a long column of a viscous liquid. The speed (v) of the ball as a function of time (t) may be best represente2010Viscosity
  26. 26Two mercury drops (each of radius ) merge to form a bigger drop. The surface energy of the bigger drop, if is the surface tension, is2010Surface tension
  27. 27Two circular plates of radius each, have a 0.01 mm thick water film between them. Then what will be the force required to separate these pla2010Surface tension
  28. 28A liquid is flowing through a non-sectional tube with its axis horizontally. If two points and on the axis of tube has a sectional area and 2009Hydrodynamics

Frequently Asked Questions

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

This chapter includes 28 questions compiled from BITSAT papers spanning 2009 to 2024.

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

These are BITSAT questions specifically for the Mechanical Properties of Fluids chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

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

Mechanical Properties of Fluids has appeared in 16 of the 16 years of BITSAT papers covered here, with 28 questions across 18 papers - about 2 per paper it appears in.

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

Of the 28 questions analysed for this chapter, 32% are easy, 39% moderate and 29% tough. 2010 had the most, with 3 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 - 12 questions (43%)
  • Archmidies Principle - 5 questions (18%)
  • Viscosity - 5 questions (18%)
  • Surface tension has produced the most tough questions (3).
6.Is Mechanical Properties of Fluids's weightage in BITSAT going up or down?

Across all 18 papers analysed, Mechanical Properties of Fluids has averaged about 1.6 questions per paper. In the last three years (2022–2024), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.