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1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ 6. Units of surface tension are both of the above [other wrong options] [Discuss in forum] energy/unit area distance it has no units none of the above. |
Q22 ⇒ 7. Which of the following meters is not associated with viscosity Orsat [other wrong options] [Discuss in forum] Red wood Say bolt Engler none of the above. |
Q23 ⇒ 8. Choose the correct relationship dynamicviscosity = kinematicviscosity x density [other wrong options] [Discuss in forum] specific gravity = gravity x density gravity = specific gravity x density kinematicviscosity = dynamicviscosity x density hydrostaticforce = surface tension x gravity. |
Q24 ⇒ 9. Dimensions of surface tension are MlL°T2 [other wrong options] [Discuss in forum] MlL°Tx MlL r2 MlL2T2 MlL°t. |
Q25 ⇒ 0. For manometer, a better liquid combination is one having higher surface tension [other wrong options] [Discuss in forum] lower surface tension surface tension is no criterion high density and viscosity low density and viscosity. |
Q26 ⇒ 1. If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water 51 cm [other wrong options] [Discuss in forum] 50 cm 52 cm 52.2 cm 51.7 cm. |
Q27 ⇒ Increase in pressure at the outer edge of a drum of radius R due to rotation at corad/sec, full of liquid of density p will be pco2/?2/2 [other wrong options] [Discuss in forum] pco2/?2 2pa2R2 pa2R/2 none of the above. |
Q28 ⇒ 4. The property of fluid by virtue of which it offers resistance to shear is called viscosity [other wrong options] [Discuss in forum] surface tension adhesion cohesion all of the above. |
Q29 ⇒ 5. Choose the wrong statement when in equilibrium, fluids can sustain shear forces [other wrong options] [Discuss in forum] fluids are capable of flowing fluids conform to the shape of the con-taining vessels when in equilibrium, fluids cannot sus-tain tangential forces fluids have some degree of compres-sibility and offer little resistance to form. |
Q30 ⇒ 7. If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be wh [other wrong options] [Discuss in forum] h w/h h/w h/wh. |
Q31 ⇒ 8. Choose the wrong statement Viscosity of liquids is appreciably af-fected by change in pressure [other wrong options] [Discuss in forum] Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force Viscosity is due primarily to interaction between fluid molecules Viscosity of liquids decreases with in-crease in temperature Viscosity is expressed as poise, stoke, or saybolt seconds. |
Q32 ⇒ 9. The units of kinematic viscosity are metres2 per sec [other wrong options] [Discuss in forum] kg sec/metre newton-sec per metre newton-sec per metre none of the above. |
Q33 ⇒ The ratio of absolute viscosity to mass den-sity is known as kinematic viscosity [other wrong options] [Discuss in forum] specific viscosity viscosity index coefficient of viscosity coefficient of compressibility. |
Q34 ⇒ 2. Which of the following is the unit of kinematic viscosity stoke [other wrong options] [Discuss in forum] pascal poise faraday none of the above. |
Q35 ⇒ Alcohol is used in manometers because it can provide longer column due to low density [other wrong options] [Discuss in forum] it has low vapour pressure it is clearly visible it has low surface tension is provides suitable meniscus. |
Q36 ⇒ 5. A pressure of 25 m of head of water is equal to 245 kN/m2 [other wrong options] [Discuss in forum] 25 kN/m2 2500 kN/m2 2.5kN/m2 12.5 kN/m2. |
Q37 ⇒ 6. Specific weight of sea water is more that of pure water because it contains all of the above [other wrong options] [Discuss in forum] dissolved air dissolved salt suspended matter heavy water. |
Q38 ⇒ 7. If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its specific gravity [other wrong options] [Discuss in forum] specific weight specific mass specific density none of the above. |
Q39 ⇒ 9. Free surface of a liquid tends to contract to the smallest possible area due to force of surface tension [other wrong options] [Discuss in forum] viscosity friction cohesion adhesion. |
Q40 ⇒ 0. A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will remain same [other wrong options] [Discuss in forum] increase decrease increase/decrease depending on depth of immersion unpredictable. |
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