ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 6 Fluid Dynamics MCQ`s Test

Sr.#	Question	Answer
1	Matter is made up of very tiny particles called	A. Atoms B. Molecules C. Ions D. None of these
2	If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm²will be	A. 1 cm B. 2 cm C. 8 cm D. None
3	An object moving through a fluid experiences a retarding force called a	A. frictional force B. terminal force C. opposing force D. drag force
4	Substances that flow easily have	A. large coefficient of viscosity B. small coefficient of viscosity C. either of them D. none of them
5	The study of fluid in motion basically involves law of conservation of:	A. Mass B. Energy C. Change D. Both A and C
6	According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area	A. decreases B. increases C. becomes zero D. none of them
7	Above a certain velocity of a fluid is called	A. turbulent flow B. steady flow C. either of them D. both of them
8	Which of the following is a characteristic of an ideal fluid?	A. it is non-viscous B. it is incompressible C. it's motion is steady D. all of the above
9	A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms^-1then velocity at second cross-section is	A. 5000 cms^-1 B. 500 cms^-1 C. 50 cms^-1 D. 0.5 cm/s
10	The irregular and unsteady flow of the fluid is called	A. turbulent flow B. steady flow C. either of them D. both of them