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	The pressure will change in the pipe, as the fluid moves through that pipe of varying	A. cross-section B. height C. none of them D. both of them
2	The density of blood is nearly equal to that of	A. mercury B. sodium C. water D. honey
3	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
4	A massive object falls through a fluid:	A. Faster B. Slower C. Slowest D. None
5	With the increase of temperature viscosity	A. Increase B. Decrease C. Remains same D. Doubles
6	Fog droplets are suspended in air when their weight is balanced by:	A. Force of gravity B. Upward trust due to air C. Surface tension D. None of these
7	Which of the following has the greatest coefficient of viscosity?	A. water B. gasoline C. honey D. tar
8	When the speed of a body in a fluid increases then the drag force	A. decreases B. becomes zero C. increases D. non of them
9	If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term	A. P B. 1/2 fv² C. pgh D. none of them
10	Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:	A. Not affected due to its size B. Twice that of small size ball C. Four times that of small size ball D. 1/4th of that of small size ball