ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 The liquid which conduct current is known as heating effect chemical energy electrolyte ohm's law
2 A carnot cycle consists of One step two step three steps four steps
3 The application of Bernoulli's equation is Torricelli's theorem Venture relation Binomial theorem Both a and b
4 Bernoulli's equation is important in the field of Electrical circuit Magnetism Photoelectric effect Flow of fluids
5 Bernoulli's equation is based upon law of conservation Mass Momentum Energy None of these
6 With increase of temperature, the viscosity of liquid and gases Increases for both Decreases for both Increases for liquids and decreases for gases Decreases for liquids and increases for gases
7 The velocity of falling raindrop attains limited value because of Up trust of air Viscous force exerted by air Surface tension effect Air currents atmosphere
8 The SI unit of viscosity is kg m<sup>-1</sup>s<sup>-1</sup> kg ms<sup>-1</sup> kg m<sup>-1</sup>s<sup>-2</sup> kg m<sup>-1</sup>s
9 Matter is made up of very tiny particles called Atoms Molecules Ions None of these
10 A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is 125 J 90 J 160 J 85 J
11 The equation of continuity
A1V1= A2V2is for the flow of
 an ideal fluid an incompressible fluid a non visconcous fluid all of the above
12 What is another name for laminar flow? streamline unsteady flow turbulent flow both (a) and (b)
13 Blood pressure is measured in torr. Which of the following units could belong to torr? N m<sup>-1</sup> N m<sup>-2</sup> N m N<sup>-1</sup>m<sup>-2</sup>
14 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid? potential energy pressure energy strain energy (a) and (b) only
15 The flow of an ideal fluid is streamline flow incompressible flow non-viscous all of the above
16 Which of the following is a characteristic of an ideal fluid? it is non-viscous it is incompressible it's motion is steady all of the above
17 The value for systolic blood pressure for a normal healthy person is 140 torr 80 torr 90 torr 120 torr
18 Which of the following options correctly states the equation of continuity for an ideal fluid? A<sub>1</sub>A<sub>2</sub>= V<sub>1</sub>V<sub>2</sub> A<sub>1</sub>/A<sub>2</sub>= V<sub>2</sub>/V<sub>1</sub> A<sub>1</sub>/A<sub>2</sub>= V<sub>1</sub>/V<sub>2</sub> none of the above
19 Which of the following has the greatest coefficient of viscosity? water gasoline honey tar
20 What are the SI base units of the coefficient of viscosity Kg m s<sup>-2</sup> kgm<sup>2</sup> s<sup>-2</sup> Kg m s<sup>-1</sup> kg m<sup>-1</sup>s<sup>-1</sup>
21 Which of the following options states the names of fluids in the order of increasing viscosity? mercury, motor oil, methanol methanol, mercury, motor oil motor oil, mercury, methanol methanol, motor oil, mercury
22 Viscosity is defined as the friction between fluid and its container's walls the internal friction between two layers of fluid the resistance to flow a fluid experiences the extent to which outside factors effect the fluid's flow
23 Bernoulli's equation is applicable for turbulent flow streamline flow both (a) and (b) all kinds of flows
24 The value of viscosity of a fluid is dependent on (at constant temperature) the fluid itself the fluid and its container anything in contact with the fluid all of the above
25 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C? fluid B fluid A both take the same time not possible to determine from given information
26 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is stethoscope thermometer manometer barometer
27 According to the Bernoulli's theorem the pressure velocity are equal to each other proportional to each other inversely proportional to each other none of them
28 The blood pressure of a person decrease with age increase with age has no effect with age none of them
29 Blood pressure is measured by the instrument stethoscope sphygmomanometer barometer none of them
30 One torr is equal to 13.33 N/m<sup>2</sup> 760 N/m<sup>2</sup> 760 mm Hg 133.3 N/m<sup>2</sup>
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