A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force

A falling drop of rain water acquires the spherical shape due to (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force 
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Surface Tension
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A falling drop of rain water ac-quires the spherical shape due to – (1) Viscosity (2) Surface Tension (3) Atmospheric pressure (4) Gravitational force

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.

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

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

Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Description : Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Last Answer : (2) surface tension Explanation: The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area.

Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Description : Rain drops acquire spherical shape due to - (1) viscosity (2) surface tension (3) friction (4) elasticity

Last Answer : (2) surface tension Explanation: The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area.

Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure

Description : Rain drops are spherical because of (A) Viscosity (B) Air resistance (C) Surface tension forces (D) Atmospheric pressure

Last Answer : Answer: Option C

Rain drops falling through atmospheric air attain limited terminal velocity, because of (A) Upward thrust due to air (B) Viscous force exerted by air (C) Surface tension effects of water (D) Force of gravity

Description : Rain drops falling through atmospheric air attain limited terminal velocity, because of (A) Upward thrust due to air (B) Viscous force exerted by air (C) Surface tension effects of water (D) Force of gravity

Last Answer : Option B

Spherical shape of mercury droplets is due to its (A) High viscosity (B) Low surface tension (C) High density (D) High surface tension

Description : Spherical shape of mercury droplets is due to its (A) High viscosity (B) Low surface tension (C) High density (D) High surface tension

Last Answer : Option D

Surface tension of a liquid (A) Is due to intermolecular forces of cohesion (B) Decreases with rise in temperature (C) Is responsible for the spherical shape of an isolated liquid drop (D) All (A), (B) & (C)

Description : Surface tension of a liquid (A) Is due to intermolecular forces of cohesion (B) Decreases with rise in temperature (C) Is responsible for the spherical shape of an isolated liquid drop (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Ball pen functions on the principle of : (1) Viscosity (2) Boyle's Law (3) Gravitational force (4) Surface tension

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.

Ball pen functions on the principle of : (1) Viscosity (2) Boyle’s Law (3) Gravitational force (4) Surface tension

Description : Ball pen functions on the principle of : (1) Viscosity (2) Boyle’s Law (3) Gravitational force (4) Surface tension

Last Answer : Surface tension

Small bubbles are perfectly spherical because of – (1) Gravity (2) Pressure (3) Viscosity (4) 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.

Small bubbles are perfectly spherical because of (1) Gravity (2) Pressure (3) Viscosity (4) Surface tension

Description : Small bubbles are perfectly spherical because of (1) Gravity (2) Pressure (3) Viscosity (4) Surface tension

Last Answer : Surface tension

The force responsible for drops of liquid assuming a spherical shape is known as: w) strong nuclear force x) Van der Waals attraction y) surface tension z) osmotic pressure

Description : The force responsible for drops of liquid assuming a spherical shape is known as: w) strong nuclear force x) Van der Waals attraction y) surface tension z) osmotic pressure

Last Answer : ANSWER: Y -- SURFACE TENSION

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 the force of adhesion between liquid molecules c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

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

When a small spherical body falls in a viscous fluid, its speed increases first, then deceases and eventually it acquires a constant speed called the terminal speed. The terminal speed depends upon (a) The density and viscosity of the fluid (b) The density of the body (c) The diameter of the body (d) All the above parameters

Description : When a small spherical body falls in a viscous fluid, its speed increases first, then deceases and eventually it acquires a constant speed called the terminal speed. The terminal speed depends upon (a) The ... ) The density of the body (c) The diameter of the body (d) All the above parameters

Last Answer : Ans:(d)

Water drops are spherical because of - (1) viscosity (2) density (3) polarity (4) surface tension

Description : Water drops are spherical because of - (1) viscosity (2) density (3) polarity (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 ... absence of other forces, including gravity, drops of virtually all liquids would be approximately spherical.

Which of the following is a result of Surface tension? (1) Gravitational pull (2) Viscosity (3) Capillary action (4) Radiation

Description : Which of the following is a result of Surface tension? (1) Gravitational pull (2) Viscosity (3) Capillary action (4) Radiation

Last Answer : (3) Capillary action Explanation: Capillary action is the result of adhesion and surface tension. Adhesion of water to the walls of a vessel will cause an upward force on the liquid at the edges ... intact, so instead of just the edges moving upward, the whole liquid surface is dragged upward.

Which of the following is a result of Surface tension ? (1) Gravitational pull (2) Viscosity (3) Capillary action (4) Radiation

Description : Which of the following is a result of Surface tension ? (1) Gravitational pull (2) Viscosity (3) Capillary action (4) Radiation

Last Answer : Capillary action

Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules

Description : Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules

Last Answer : (2) Cohesive force between molecules Explanation: Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.

Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules.

Description : Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules.

Last Answer :  Cohesive force between molecules

A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation? (A) Inertial and drag forces are important (B) Drag, gravitational and buoyancy forces are important (C) Drag force and gravitational forces are important (D) None of the above

Description : A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation? (A) Inertial and drag forces are important (B) Drag ... forces are important (C) Drag force and gravitational forces are important (D) None of the above

Last Answer : (B) Drag, gravitational and buoyancy forces are important

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

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

Falling drops of water become spheres due to the property of (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

Last Answer : Answer: Option C

A small drop of oil spreads over water because : (1) oil has a higher surface tension (2) water has a higher surface tension (3) oil has a higher viscosity (4) water has a higher viscosity

Description : A small drop of oil spreads over water because : (1) oil has a higher surface tension (2) water has a higher surface tension (3) oil has a higher viscosity (4) water has a higher viscosity

Last Answer : (2) water has a higher surface tension Explanation: Dispersion is used to separate a beam of white light into its constituent spectrum of colours. This phenomenon leads to rainbow.

A small drop of oil spreads over water because : (1) oil has a higher surface tension (2) water has a higher surface tension (3) oil has a higher viscosity (4) water has a higher viscosity

Description : A small drop of oil spreads over water because : (1) oil has a higher surface tension (2) water has a higher surface tension (3) oil has a higher viscosity (4) water has a higher viscosity

Last Answer : water has a higher surface tension

The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Description : The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Last Answer : (1) capillary action Explanation: The oil in the wick of an oil lamp rises up due to capillary action.

The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Description : The oil in the wick of an oil lamp rises up due to: (1) capillary action (2) low viscosity of oil (3) gravitational force (4) pressure difference

Last Answer : capillary action

A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Description : A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Last Answer : (2) A sphere has the least surface area for a given volume Explanation: A drop of liquid assumes spherical shape because a sphere has the least surface area for a given volume.

A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Description : A drop of liquid assumes spherical shape because: (1) Intermolecular forces are strong in liquids (2) A sphere has the least surface area for a given volume (3) A sphere has the largest surface area for a given volume (4) Inter molecular forces are weak in liquids

Last Answer : A sphere has the least surface area for a given volume

A liquid disturbed by stirring comes to rest due to – (1) density (2) surface tension (3) viscosity (4) centripetal force

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.

A liquid disturbed by stirring comes to rest due to (1) density (2) surface tension (3) viscosity (4) centripetal force

Description : A liquid disturbed by stirring comes to rest due to (1) density (2) surface tension (3) viscosity (4) centripetal force

Last Answer : viscosity

Materials for rain proof coats and tents owe their water proof properties to – (1) Surface tension (2) Viscosity (3) Specific gravity (4) Elasticity

Description : Materials for rain proof coats and tents owe their water proof properties to – (1) Surface tension (2) Viscosity (3) Specific gravity (4) Elasticity

Last Answer : (1) Surface tension Explanation: Materials for rain proof coats and tents owe their water proof properties to Surface Tension. The surface of a liquid behaves like an elastic membrane and therefore, has a tendency to contract. This property of liquid is called Surface Tension.

Materials for rain proof coats and tents owe their water proof properties to (1) Surface tension (2) Viscosity (3) Specific gravity (4) Elasticity

Description : Materials for rain proof coats and tents owe their water proof properties to (1) Surface tension (2) Viscosity (3) Specific gravity (4) Elasticity

Last Answer : Surface tension

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

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.

A solid needle placed horizontally on the surface of the water floats due to (1) capillary action (2) water pressure (3) surface tension of water (4) viscosity of water

Description : A solid needle placed horizontally 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 : surface tension of water

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

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.

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

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 : surface tension of the oil

Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules

Description : Surface tension in a liquid is due to : (1) Adhesive force between molecules (2) Cohesive force between molecules (3) Gravitational force between molecules (4) Electrical force between molecules

Last Answer : (2) Cohesive force between molecules Explanation: Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. This property is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.

A needle or a pin floats on the surface of water because of – (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

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.

A needle or a pin floats on the surface of water because of (1) Surface tension (2) Surface energy (3) Viscosity (4) Adhesive force

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

In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop

Description : In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop

Last Answer : ANSWER: Z -- ELECTRIC FIELD AND THE CHARGE ON THE DROP 

The oil in the wick of an oil lamp rises up due to (a) Pressure difference (b) Capillary action (c) Low viscosity of oil (d) Gravitational force

Description : The oil in the wick of an oil lamp rises up due to (a) Pressure difference (b) Capillary action (c) Low viscosity of oil (d) Gravitational force

Last Answer : Ans:(b)

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 : 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

Last Answer : Answer: Option A

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) Ratio of inertial force to force due to gravitation (C) Ratio of inertial force to force due to surface tension (D) All the four ratios of inertial force to force due to viscosity, gravitation, surface tension, and elasticity

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

Last Answer : Answer: Option D

The hair of shaving brush clings together when removed from water due to – (1) Surface tension (2) Viscosity (3) Elasticity (4) Friction

Description : The hair of shaving brush clings together when removed from water due to – (1) Surface tension (2) Viscosity (3) Elasticity (4) Friction

Last Answer : (1) Surface tension Explanation: Surface tension is a contractive tendency of the surface of a liquid that allows it to resist an external force. It is revealed, for example, in the floating of ... is caused by cohesion of similar molecules, and is responsible for many of the behaviors of liquids.

Materials for rain-proof coats and tents owe their water proof properties to _____? A. Surface tension B. Viscosity C. Elasticity D. Specific gravity

Description : Materials for rain-proof coats and tents owe their water proof properties to _____? A. Surface tension B. Viscosity C. Elasticity D. Specific gravity

Last Answer : ANSWER: A

Material for rain-proof coats and tents owe their water proof properties to ----? A. Surface tension (Answer) B. Viscosity C. Specific gravity D. Elasticity

Description : Material for rain-proof coats and tents owe their water proof properties to ----? A. Surface tension (Answer) B. Viscosity C. Specific gravity D. Elasticity

Last Answer : A. Surface tension (Answer)

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 : 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

Last Answer : Answer: Option B

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

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.

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

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 : Upward Thrust