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

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

1 Answer

Answer :

Answer: Option C
by

Related questions

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

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.

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

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

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.

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.

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

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

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

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

Existence of boundary layer in fluid flow is because of the (A) Surface tension (B) Fluid density (C) Fluid viscosity (D) Gravity forces

Description : Existence of boundary layer in fluid flow is because of the (A) Surface tension (B) Fluid density (C) Fluid viscosity (D) Gravity forces

Last Answer : (C) Fluid viscosity

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)

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

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

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 : The property of fluid by virtue of which it offers resistance to shear is called (A) Surface tension (B) Adhesion (C) Cohesion (D) Viscosity

Last Answer : Answer: Option D

Rain drops (assumed to be spherical) of radii R1, 2R1, 3R, 4R, a.all of them will be zero b.all of them will be same c.drops of radius R will be maximum d.drops of radius R will be minimum e.107 dynes

Description : Rain drops (assumed to be spherical) of radii R1, 2R1, 3R, 4R, a.all of them will be zero b.all of them will be same c.drops of radius R will be maximum d.drops of radius R will be minimum e.107 dynes

Last Answer : d. drops of radius R will be minimum

Spherical shape of rain drops can be ex- plained by?

Description : Spherical shape of rain drops can be ex- plained by?

Last Answer : Surface tension of water

Why the rain drops acquired the spherical shape?

Description : Why the rain drops acquired the spherical shape?

Last Answer : Surface tension

Why the rain drops acquired the spherical shape?

Description : Why the rain drops acquired the spherical shape?

Last Answer : Surface tension

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

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.

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)

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

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

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

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

Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces(B) A hydrometer used for the determination of specific gravities of liquidsworks on the principle of buoyant forces(C) In case of unsteady fluid flow, the velocity at any given point does notchange with time(D) Turbulent fluid flow is characterised by the rapid fluctuation ofinstantaneous pressure & velocity at a poin

Description : Pick out the wrong statement. (A) Surface tension of a liquid is because of the difference in magnitude of adhesive & cohesive forces (B) A hydrometer used for the determination of ... Turbulent fluid flow is characterised by the rapid fluctuation of instantaneous pressure & velocity at a poin

Last Answer : (C) In case of unsteady fluid flow, the velocity at any given point does not change with time

Which of the following properties of a fluid is responsible for offering resistance to shear? (A) Surface tension (B) Viscosity (C) Specific gravity (D) All (A), (B), and (C)

Description : Which of the following properties of a fluid is responsible for offering resistance to shear? (A) Surface tension (B) Viscosity (C) Specific gravity (D) All (A), (B), and (C)

Last Answer : (B) Viscosity

Which of the following is the term used for the resistance of a liquid system to flow? w) surface tension x) diffusion y) viscosity

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

The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as (A) Hip (B) Gable (C) Ridge (D) Eaves

Description : The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as (A) Hip (B) Gable (C) Ridge (D) Eaves

Last Answer : Answer: Option D

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

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

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

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

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

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 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

Last Answer : Answer: Option B

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 : 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

Last Answer : Answer: Option D

Poise is the unit of (A) Surface tension (B) Capillarity (C) Viscosity (D) Shear stress in fluids

Description : Poise is the unit of (A) Surface tension (B) Capillarity (C) Viscosity (D) Shear stress in fluids

Last Answer : Answer: Option C

A flow in which __________ force is dominating over the viscosity is called turbulent flow. (A) Elastic (B) Surface tension (C) Viscous (D) Inertia

Description : A flow in which __________ force is dominating over the viscosity is called turbulent flow. (A) Elastic (B) Surface tension (C) Viscous (D) Inertia

Last Answer : Answer: Option D

Mercury does not wet glass. This is due to property of liquid known as (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity

Description : Mercury does not wet glass. This is due to property of liquid known as (A) Adhesion (B) Cohesion (C) Surface tension (D) Viscosity

Last Answer : Answer: Option C

The force per unit length is the unit of (A) Surface tension (B) Compressibility (C) Capillarity (D) Viscosity

Description : The force per unit length is the unit of (A) Surface tension (B) Compressibility (C) Capillarity (D) Viscosity

Last Answer : Answer: Option A

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 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 : 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

Last Answer : Answer: Option A

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 tendency of a liquid surface to contract is due to the following property (A) Cohesion (B) Adhesion (C) Viscosity (D) Surface tension

Last Answer : Answer: Option D

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

called (A) Surface tension (B) Coefficient of viscosity (C) Viscosity (D) Osmosis

Description : called (A) Surface tension (B) Coefficient of viscosity (C) Viscosity (D) Osmosis

Last Answer : Answer: Option C

Bulking of sand takes place due to [ A ] Surface tension [ B ] Viscosity [ C ] Capillarity [ D ] None of the above

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

The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is (A) Greater for heavy rain (B) Greater for lighter rain (C) Greater for large drops (D) Lesser for small rain drops

Description : The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is (A) Greater for heavy rain (B) Greater for lighter rain (C) Greater for large drops (D) Lesser for small rain drops

Last Answer : Answer: Option B

Presence of high concentration of ozone and smog in atmospheric air causes the(A) Embrittlement & decrease of folding resistance of paper(B) Cracking of rubber products(C) Fading of dye on textiles(D) Damage of electrical insulator on high tension power line

Description : Presence of high concentration of ozone and smog in atmospheric air causes the (A) Embrittlement & decrease of folding resistance of paper (B) Cracking of rubber products (C) Fading of dye on textiles (D) Damage of electrical insulator on high tension power line

Last Answer : (B) Cracking of rubber products