MCQ on Fluid Flow. We covered all the MCQ on Fluid Flow in this post for free so that you can practice well for the exam.
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MCQ on Fluid Flow for Students
Why do two ice blocks join to form one block when pressed together?
(a) The melting point of ice is lowered with an increase in pressure
(b) Melting point of ice increases with an increase in pressure
(c) Melting point of ice remains unchanged with an increase in pressure
(d) Melting point of ice is 0°C
Option a – The melting point of ice is lowered with an increase in pressure
If a body is charged by rubbing it, its weight
(a) remains precisely constant
(b) increases slightly
(c) decreases slightly
(d) may increase slightly or may decrease slightly
Option d – may increase slightly or may decrease slightly
An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil then
(a) remains horizontal.
(b) is inclined horizontally with a smaller depth at the rear end.
(c) is inclined horizontally with a larger depth at the rear end.
(d) assumes parabolic curves.
Option c – is inclined horizontally with a larger depth at the rear end
Which one of the following is not the result of surface tension?
(a) Vapor formation above the liquid surface
(b) Convex shape of the liquid meniscus
(c) Liquid rising in a capillary
(d) Spherical shape of mercury fallen on the floor
Option c – Liquid rising in a capillary
Which one of the following statements is correct?
(a) The angle of contact of water with glass is acute while that of mercury with glass is obtuse
(b) The angle of contact of water with glass is obtuse, while that of mercury with glass is acute
(c) Both the angle of contact of water with glass and that of mercury with glass are acute
(d) None of the above
Option a – The angle of contact of water with glass is acute while that of mercury with glass is obtuse
Which one of the following petroleum refinery products has the lowest boiling point?
(a) Kerosene
(b) Diesel
(c) Gasoline
(d) Lubricating oil
Option c – Gasoline
When a pinch of salt or any other salt which is soluble in water is added to water, its surface tension
(a) increases
(b) decreases
(c) may increase or decrease depending on salt
(d) None of these
Option a – increases
A drop of oil is placed on the surface of the water. Which of the following statements is correct?
(a) It will remain on it as a sphere
(b) It will spread as a thin layer
(c) It will partly be a spherical droplet and partly a thin film
(d) It will float as a distorted drop on the water’s surface
Option b – It will spread as a thin layer
If two soap bubbles of different radii are in communication with each other then
(a) air flows from the larger bubble into the smaller one until the two bubbles are of equal size
(b) the size of the bubbles remains the same
(c) air flows from the smaller bubble into the larger one and the larger one grows at the expense of the smaller one
(d) the air flows from the larger into the smaller bubble until the radius of the smaller one becomes equal to that of the larger one and of the larger one equal to that of the smaller one.
Option c – air flows from the smaller bubble into the larger one and the larger one grows at the expense of the smaller one
Fevicol is added to paint to be painted on the walls, because
(a) it increases the adhesive force between paint and wall.
(b) it decreases adhesive force between paint and wall molecules.
(c) it decreases the cohesive force between paint molecules
(d) None of these
Option a – it increases the adhesive force between paint and wall
A liquid is contained in a vessel. The liquid-solid adhesive force is very weak compared to the cohesive force in the liquid. The shape of the liquid surface will be
(a) horizontal
(b) vertical
(c) concave
(d) convex
Option d – convex
Which of the following statement(s) is/are true?
(a) For gases, in general, viscosity increases with temperature
(b) For liquids, viscosity varies directly with pressure
(c) For gases, viscosity is independent of pressure
(d) All of the above
Option d – All of the above
We covered all the MCQ on fluid flow above in this post for free so that you can practice well for the exam.
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