Description : Falling drops of water become spheres due to the property of (A) Surface tension of water (B) Compressibility of water (C) Capillarity of water (D) Viscosity of water
Last Answer : Answer: Option A
Description : The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called (A) Surface tension (B) Compressibility (C) Capillarity (D) Viscosity
Last Answer : Answer: Option D
Description : The variation in the volume of a liquid with the variation of pressure is called its (A) Surface tension (B) Compressibility (C) Capillarity (D) Viscosity
Last Answer : Answer: Option B
Description : Poise is the unit of (A) Surface tension (B) Capillarity (C) Viscosity (D) Shear stress in fluids
Last Answer : Answer: Option C
Description : Bulking of sand takes place due to [ A ] Surface tension [ B ] Viscosity [ C ] Capillarity [ D ] None of the above
Last Answer : [ A ] Surface tension
Description : Pieces of camphor placed on water move about rapidly. This is because of - (1) diffusion (2) viscosity (3) surface tension (4) capillarity
Last Answer : (3) surface tension Explanation: The Camphor slowly dissolves in the water lowering the latter's surface tension in the immediate neighbourhood. When after sometime the whole surface settles for the reduced tension, the movement of the camphor too short.
Last Answer : (3) surface tension Explanation: The Camphor slowly dissolves in the water lowering the latter’s surface tension in the immediate neighborhood. The stronger pull exerted by the uncontaminated portion of water brings about a movement of the surface and the camphor particles are carried along with it.
Description : Which one of the following statements is correct ? (a) Dynamic viscosity is the property of a fluid which is not in motion (b) Surface energy is a fluid property giving rise to the phenomenon ... results from the action of very high pressure (d) Real fluids have lower viscosity than ideal fluids
Last Answer : (d) Real fluids have lower viscosity than ideal fluids
Description : 16. Surface tension force is the product of surface tension per unit length and cross-sectional area of flow. A) Correct B) Incorrect
Last Answer : B
Description : Surface tension (A) Acts in the plane of the interface normal to any line in the surface (B) Is also known as capillarity (C) Is a function of the curvature of the interface (D) Decreases with fall in temperature
Description : The oil in the wick of lamp rises due to (1) Pressure difference (2) Pheonomenon of capillarity (3) Low viscosity of oil (4) Force of cohesion
Last Answer : (2) Pheonomenon of capillarity Explanation: The oil in the wick of lamp rises due to phenomenon of capillarity. This phenomenon is called molecular property of matter.
Last Answer : Pheonomenon of capillarity
Description : The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called (A) Density of liquid (B) Specific gravity of liquid (C) Compressibility of liquid (D) Surface tension of liquid
Description : The property of a fluid which enables it to resist tensile stress is known as (A) Compressibility (B) Surface tension (C) Cohesion (D) Adhesion
Description : The force per unit length across such a line in the surface is called _________. a. force per length b. surface tension c. Pressure d. Density
Last Answer : surface tension
Description : Define surface tension and capillarity with sketch. Give practical example of each.
Last Answer : Surface tension: The property of liquid which enables it to resist tensile stress is called surface tension .In the following figure we can see the surface tension between water and air also between mercury and ... ground water in the bushes. ii) Water moving up a straw when deep in water glass.
Description : A flow in which __________ force is dominating over the viscosity is called turbulent flow. (A) Elastic (B) Surface tension (C) Viscous (D) Inertia
Description : Free surface of a liquid tends to contract to the smallest possible area due to force of (A) Surface tension (B) Viscosity (C) Friction (D) Cohesion
Description : For similarity, in addition to models being geometrically similar to prototype, the following in both cases should also be equal (A) Ratio of inertial force to force due to viscosity (B) ... the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity
Description : Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by ... it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water
Last Answer : c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions
Description : The sensitiveness of a level tube decreases if (A) Radius of curvature of its inner surface is increased (B) Diameter of the tube is increased (C) Length of the vapour bubble is increased (D) Both viscosity and surface tension are increased
Last Answer : (D) Both viscosity and surface tension are increased
Description : The tension coefficient of any member is (A) Force divided by the length (B) Tension divided by the length (C) Tension per unit area (D) Tension in the member
Last Answer : (B) Tension divided by the length
Description : Surface energy per unit area of a surface is numerically equal to (A) Atmospheric pressure (B) Surface tension (C) Force of adhesion (D) Force of cohesion
Description : The buoyancy depends upon the (A) Weight of the liquid displaced (B) Pressure with which the liquid is displaced (C) Viscosity of the liquid (D) Compressibility of the liquid
Description : Property of a fluid by which its own molecules are attracted is called (A) Adhesion (B) Cohesion (C) Viscosity (D) Compressibility
Description : Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called (A) Adhesion (B) Cohesion (C) Viscosity (D) Compressibility
Description : Plants get water through the roots because of — (1) elasticity (2) capillarity (3) viscosity (4) photosynthesis
Last Answer : (2) capillarity Explanation: Plants absorb water from their root hairs on the root via osmosis. It is then transported to other parts of the plant (through the network of xylem vessels) ... of capillary action and "transiprational pull." Water moves through the plant by means of capillary action.
Description : Plants get water through the roots because of— (1) elasticity (2) capillarity (3) viscosity (4) photosynthesis
Last Answer : capillarity
Description : A liquid disturbed by stirring comes to rest due to – (1) density (2) surface tension (3) viscosity (4) centripetal force
Last Answer : (3) viscosity Explanation: It happens because of viscosity. The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. It is due to friction between neighboring parcels of the fluid that are moving at different velocities.
Description : A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force
Last Answer : (1) Surface tension Explanation: The pin or needle floats because of an invisible elastic skin on the surface of the water. This elastic skin is called surface tension. Surface tension of the water leads to forces strong enough to support the needle's weight.
Description : Ball pen functions on the principle of : (1) Viscosity (2) Boyle's Law (3) Gravitational force (4) Surface tension
Last Answer : (4) Surface tension Explanation: The ballpoint pen is one of the most simple and yet ubiquitous devices whose function depends on surface tension. With a pen held upright, gravity and surface tension act in concert to get ink onto the ball.
Description : A falling drop of rain water ac-quires the spherical shape due to – (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force
Last Answer : (2) Surface Tension Explanation: Raindrops start out as round high in the atmosphere as water collects on dust and smoke particles in clouds. But as raindrops fall, they lose their rounded ... the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules.
Description : The buoyant force acting on a floating body is dependent on the (A) Viscosity of the liquid (B) Weight of the liquid displaced (C) Depth of immersion of the body (D) Surface tension of the liquid
Last Answer : (B) Weight of the liquid displaced
Description : A needle or a pin floats on the surface of water because of (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force
Last Answer : Surface tension
Description : A liquid disturbed by stirring comes to rest due to (1) density (2) surface tension (3) viscosity (4) centripetal force
Last Answer : viscosity
Description : Ball pen functions on the principle of : (1) Viscosity (2) Boyle’s Law (3) Gravitational force (4) Surface tension
Description : A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force
Last Answer : Surface Tension
Description : Pick up the correct statement from the following: (A) Coefficient of compressibility is the decrease in void ratio per unit increase of pressure (B) The percent settlement at any time is called degree of consolidation (C) Time factor is a dimensionless quantity (D) All the above
Description : For high sensivity of the bubble tube (A) A liquid of low viscosity is used (B) A liquid of low surface tension is used (C) The bubble space should be long (D) All the above
Last Answer : (D) All the above
Description : The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion
Description : The mercury does not wet the glass. This is due to the property of the liquid known as (A) Cohesion (B) Adhesion (C) Viscosity (D) Surface tension
Description : Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure
Description : Mercury does not wet glass. This is due to property of liquid known as (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity
Description : Falling drops of water become spheres due to the property of (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity
Description : For manometer, a better liquid combination is one having (A) Higher surface tension (B) Lower surface tension (C) Surface tension is no criterion (D) High density and viscosity
Description : The tendency of a liquid surface to contract is due to the following property (A) Cohesion (B) Adhesion (C) Viscosity (D) Surface tension
Description : The property of fluid by virtue of which it offers resistance to shear is called (A) Surface tension (B) Adhesion (C) Cohesion (D) Viscosity
Description : called (A) Surface tension (B) Coefficient of viscosity (C) Viscosity (D) Osmosis
Description : Which one of the following is correct? [IES-2008] A hydrodynamic slider bearing develops load bearing capacity mainly because of- (a) Slider velocity (b) wedge shaped oil film (c) Oil compressibility (d) oil viscosity
Last Answer : (b) wedge shaped oil film
Description : The continuity equation (A) Is independent of the compressibility of the fluid (B) Is dependent upon the viscosity of the fluid (C) Represents the conservation of mass (D) None of these
Last Answer : (C) Represents the conservation of mass