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A2G MASTERSTROKE COACHING, MECHANICAL PROPERTIES OF FLUID, (ALL IMP FAQ MCQ ), EACH MCQ CARRAY 4 MARKS, , total marks : 100, , Obtain marks, Time : 60 min, , 1. which one is not the property of Ideal fluid, a ) incompressible b ) non viscous c ) irrotational d ) non steady, 2. the shear modulus of fluid is, a ) zero, b)1, c ) greater than 1 d ) infinity, 3. which of the following isNOT the unit used for measurement of pressure, a ) gauge b) bar, c ) N/m, d ) newton, 4. 1 bar = ….. Pa, a ) 103, b ) 104, c ) 105, d ) 106, 5. which of the following is not the unit of pressure, a ) torr, b ) bar, c ) pascal d ) dyne, 6. the branch of Physics which deals with the properties of fluid at rest is, called …., a ) hydromechanics b ) hydrodynamics c ) hydrostatics d ) hydrofluids, 7. the atmospheric pressure at sea level is called as, a ) normal atmospheric pressure b ) critical atmospheric pressure, c ) specific atmospheric pressure d ) absolute atmospheric pressure, 8. the region where gas pressure is less than atmospheric pressure is, treated as ….., a ) space, b ) vaccum c ) forbidden energy gap d ) none, 9. the difference between absolute pressure and atmospheric pressure is, called as …., a ) critical pressure b ) specific pressure c ) gauge pressure d ) none, 10.a liquid does not wet the surface of solid if the angle of contact is, a ) exactly zero b ) acute c ) obtuse d ) 90 degree, 11.raindrops are spherical because of, a ) gravity b ) surface tension c ) air resistance d ) none

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12.excess pressure inside a bubble of radius R and of a liquid of surface, tension t is, a ) T/r b ) 2T/r c ) 3T/r, d ) 4T/r, 13.meniscus of mercury in capillary is, a ) Concave b ) plane c ) convex d ) cylindrical, 14.surface tension of a liquid is independent of the, a ) temperature of liquid, b ) area of the liquid surface, c ) nature of liquid, d ) impurity, 15.for a liquid which is rising in a capillary the angle of contact is, a ) obtuse, b ) acute c ) 180 d ) 90, 16.dimension of surface tension is, a ) M1 T-2. L0 b ) M1 T-1 L3 c ) M2 T-2.L2 d ) none, 17. Two soap bubbles have radii in the ratio of 4:3. What is the ratio of, work done to blow these bubbles?, , a ) 4:3, b ) 16:9, c ) 9:16, d )3:5, 18.if common salt is dissolved in water then the surface tension of water is, a ) increased b) decreased, c ) not change d ) first increase then drecreased, 19.plants get water through the roots because of, a ) capillarity, b )gravity c ) viscosity d ) elasticity, 20.in a capillary tube fall of liquid is possible when angle of contact is, a ) acute, b ) 90, c ) obtuse, d)0, 21.when the angle of contact between solid and a liquid is 90 degree then, a ) cohesive force > adhesive force b ) cohesive force < adhesive force, c ) cohesive force = adhesive force d ) cohesive force >> adhesive force, 22.The height of water in a capillary tube of radius 2cm is 4cm. What, should be the radius of capillary, if the water rises to 8cm in tube?, , a ) 1 cm, b ) 2cm, c ) 3 cm, d ) 4 cm, 23.the intermolecular force of attraction between molecules of the same, substance is called, a ) nuclear force, b ) cohesive force, c ) molecular force, d ) adhesive force, 24.as the temperature of liquid increases its surface tension, a ) increase b ) decrease c ) remain same d )increase & then decrease, 25.at critical temperature the surface tension of liquid is, a ) zero b ) infinity c ) unpredictable d ) same as at other temperature, , Do study like torties , it took some time to reach to your goal but you win, definitely

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ANSWER KEY, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, , D, A, D, C, D, C, A, B, C, C, B, D, C, B, B, A, B, A, A, C, C, A, B, B, A