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 : 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 force per unit length is the unit of (A) Surface tension (B) Compressibility (C) Capillarity (D) Viscosity
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 : 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
Last Answer : Answer: Option B
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 : 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 : 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 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 property of a fluid which enables it to resist tensile stress is known as (A) Compressibility (B) Surface tension (C) Cohesion (D) Adhesion
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 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 : Mercury does not wet glass. This is due to property of liquid known as (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity
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 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 : 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 : Pressure exerted by a liquid depends upon its (A) Surface tension (B) Density (C) Viscosity
Last Answer : Option B
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 : Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure
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 : The intensive properties are (A) Molar volume, density, viscosity and boiling point (B) Refractive index and surface tension (C) Both (A) and (B) (D) None of these
Last Answer : (C) Both (A) and (B)
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 : Power consumption during turbulent flow in agitation tank is proportional to the __________ of the liquid. (A) Viscosity (B) Thermal conductivity (C) Surface tension (D) Density
Last Answer : (D) Density
Description : What is the effect of temperature on surface tension and viscosity of a liquid?
Last Answer : Ans. Both decrease by increasing temperature.
Description : Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface? (A) Liquid density (B) Liquid viscosity (C) Hot surface temperature (D) Interfacial tension
Last Answer : (D) Interfacial tension
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 : Which of the following is the term used for the resistance of a liquid system to flow? w) surface tension x) diffusion y) viscosity
Last Answer : ANSWER: Y -- VISCOSITY
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 : 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 flow in which __________ force is dominating over the viscosity is called turbulent flow. (A) Elastic (B) Surface tension (C) Viscous (D) Inertia
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 : 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 : Falling drops of water become spheres due to the property of (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity
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 : The fluid property which matters for falling rain drops to acquire spherical shape is its (A) Pressure (B) Height of descend (C) Viscosity (D) Surface tension
Last Answer : (D) Surface tension
Description : If there were no gravity, which of the following will not be there for a fluid? (1) Viscosity (2) Surface Tension (3) Pressure (4) Upward Thrust
Last Answer : (4) Upward Thrust Explanation: If there is no gravity, there will not be any upward thrust to keep a liquid buoyant. Whenever a body is placed in a fluid, the fluid applies resultant up ... gravity at the given place. Up thrust increases with increase in acceleration due to gravity and vice versa.
Description : A solid needle placed horizon-tally on the surface of the water floats due to – (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water
Last Answer : (3) surface tension of water Explanation: A solid needle placed horizontally on the surface of water floats due to surface tension of water.
Description : Rise of oil a wick is due to – (1) density of the oil (2) viscosity of the oil (3) surface tension of the oil (4) pressure of the oil
Last Answer : (3) surface tension of the oil Explanation: The phenomenon of rise or fall of liquid in a capillary tube is called capillarity. Oil rises through a wick due to capillarity. The narrow ... tiny capillaries, through which oil rises. Capillary action is the result of adhesion and surface tension.
Description : Small bubbles are perfectly spherical because of – (1) Gravity (2) Pressure (3) Viscosity (4) Surface tension
Last Answer : (4) Surface tension Explanation: Surface tension is responsible for the shape of liquid droplets. Although easily deformed, droplets of water tend to be pulled into a spherical shape by the cohesive ... shape minimizes the necessary "wall tension" of the surface layer according to Laplace's law.
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 : Dimension of mass diffusivity is the same as that of (A) Kinematic viscosity (B) Dynamic viscosity (C) Surface tension (D) Pressure
Last Answer : (A) Kinematic viscosity