When the temperature increases, what does the angle of contact of a liquid? -Do You Know?

When the temperature increases, what does the angle of contact of a liquid? -Do You Know?
by

1 Answer

Answer :

With the increase in temperature , the surface tension of liquid decreases. Due to it, the liquid surface on the solid surface becomes more flat, consequently the angle of contact of a liquid increases with the increase in temperature.
by

Related questions

When the temperature increases, what does the angle of contact of a liquid?

Description : When the temperature increases, what does the angle of contact of a liquid?

Last Answer : Decreases

A liquid will not wet the surface of solid if the angle of contact is which angle? -Do You Know?

Description : A liquid will not wet the surface of solid if the angle of contact is which angle? -Do You Know?

Last Answer : 90o . A liquid does not wet the solid surface if the angle of contact is obtuse ie, greater than 90o . In this case cohesive forces will be greater than adhesive forces and so, the liquid does not wet the surface of solid.

If a liquid wets a solid surface, what is the angle of contact?

Description : If a liquid wets a solid surface, what is the angle of contact?

Last Answer : Less than 90°

The angle of contact in case of a liquid depends upon (A) The nature of the liquid and the solid (B) The material which exists above the free surface of the liquid (C) Both of die above (D) Any one of the above

Description : The angle of contact in case of a liquid depends upon (A) The nature of the liquid and the solid (B) The material which exists above the free surface of the liquid (C) Both of die above (D) Any one of the above

Last Answer : Answer: Option C

Back-trapping in a distillation column (A) Increases tray efficiency (B) Decreases tray efficiency (C) Reduces pressure drop (D) Is desirable, as it provides improved vapour-liquid contact

Description : Back-trapping in a distillation column (A) Increases tray efficiency (B) Decreases tray efficiency (C) Reduces pressure drop (D) Is desirable, as it provides improved vapour-liquid contact

Last Answer : (B) Decreases tray efficiency

In the converter of the contact process for the manufacture of H2SO4 the equilibrium conversion of SO2__________ (i) __________ with increase in temperature and __________ (ii) __________ with increase in the mole ratio of SO2 to air. (A) (i) increases (ii) decreases (B) (i) decreases (ii) increases (C) (i) increases (ii) increases (D) (i) decreases (ii) decreases

Description : In the converter of the contact process for the manufacture of H2SO4 the equilibrium conversion of SO2__________ (i) __________ with increase in temperature and __________ (ii) __________ with increase in the mole ratio ... increases (C) (i) increases (ii) increases (D) (i) decreases (ii) decreases

Last Answer : (B) (i) decreases (ii) increases

__________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid. (A) Dew point (B) Bubble point (C) Dry bulb temperature (D) Wet bulb temperature

Description : __________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid. (A) Dew point (B) Bubble point (C) Dry bulb temperature (D) Wet bulb temperature

Last Answer : (A) Dew point

If temperature rises, what will be the coefficient of viscosity of liquid? -Do You Know?

Description : If temperature rises, what will be the coefficient of viscosity of liquid? -Do You Know?

Last Answer : As temperature increases, coefficient of viscosity decreases.

Which is a non-metal that remains liquid at room- temperature? -Do You Know?

Description : Which is a non-metal that remains liquid at room- temperature? -Do You Know?

Last Answer : answer:

With the rise of temperature, what will be the surface tension of a liquid? -Do You Know?

Description : With the rise of temperature, what will be the surface tension of a liquid? -Do You Know?

Last Answer : Viscosity and surface tension are the physical properties of the liquid. As the temperature increases, viscosity decreases. Surface tension decreases with increase in the temperature.

The critical angle of a glass slab increases with (a) Increase in the refractive index of glass (b) Decrease in the refractive index of glass (c) Increase in temperature (d) None of these

Description : The critical angle of a glass slab increases with (a) Increase in the refractive index of glass (b) Decrease in the refractive index of glass (c) Increase in temperature (d) None of these

Last Answer : Ans:(d)

Pick out the correct statement. (A) Higher is the temperature of the radiating body, higher is the wavelength of radiation (B) Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder (C) The wavelength corresponding to maximum mono-chromatic emissive power increases with rise in temperature (D) Solid angle subtended by the finite surface at the radiating element is called the angle of incidence

Description : Pick out the correct statement. (A) Higher is the temperature of the radiating body, higher is the wavelength of radiation (B) Logarithmic mean area is used for calculating the heat flow rate ... ) Solid angle subtended by the finite surface at the radiating element is called the angle of incidence

Last Answer : (B) Logarithmic mean area is used for calculating the heat flow rate through a thick walled cylinder

Molecular diffusivity of a liquid (A) Increases with temperature (B) Decreases with temperature (C) May increase or decrease with temperature (D) Is independent of temperature

Description : Molecular diffusivity of a liquid (A) Increases with temperature (B) Decreases with temperature (C) May increase or decrease with temperature (D) Is independent of temperature

Last Answer : (A) Increases with temperature

With increase in temperature, the leaching rate increases because of the (A) Increased diffusivity (B) Decreased viscosity of liquid (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : With increase in temperature, the leaching rate increases because of the (A) Increased diffusivity (B) Decreased viscosity of liquid (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

With increase in temperature, the leaching rate increases due to (A) Decreased liquid viscosity (B) Increased diffusivity (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : With increase in temperature, the leaching rate increases due to (A) Decreased liquid viscosity (B) Increased diffusivity (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Thermal conductivities of most of the liquids __________ with rise in temperature.(A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the liquid

Description : Thermal conductivities of most of the liquids __________ with rise in temperature. (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the liquid

Last Answer : (B) Decreases

Pick out the wrong statement. (A) The controlling resistance in case of heating of air by condensing steam is in the air film (B) The log mean temperature difference (LMTD) for counter flow and parallel flow can be theoretically same when any one of the fluids (hot or cold fluid) passes through the heat exchanger at constant temperature (C) In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs (D) Phase change in case of a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature

Description : Pick out the wrong statement. (A) The controlling resistance in case of heating of air by condensing steam is in the air film (B) The log mean temperature difference (LMTD) for ... a pure fluid at a given pressure from liquid to vapor or vice-versa occurs at saturation temperature

Last Answer : (C) In case of a 1 - 2 shell and tube heat exchanger, the LMTD correction factor value increases sharply, when a temperature cross occurs

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because (A) Convection becomes important (B) Conduction becomes important (C) Radiation becomes important (D) Sub-cooled boiling occurs

Description : Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because (A) Convection becomes important (B) Conduction becomes important (C) Radiation becomes important (D) Sub-cooled boiling occurs

Last Answer : (C) Radiation becomes important

With increase in the temperature, viscosity of a liquid (A) Increases (B) Decreases (C) Remain constant (D) May increase or decrease; depends on the liquid

Description : With increase in the temperature, viscosity of a liquid (A) Increases (B) Decreases (C) Remain constant (D) May increase or decrease; depends on the liquid

Last Answer : (B) Decreases

The bulk modulus of elasticity of a liquid (A) Is zero for incompressible liquid (B) Decreases with pressure (C) Is independent of temperature & pressure (D) Increases with pressure

Description : The bulk modulus of elasticity of a liquid (A) Is zero for incompressible liquid (B) Decreases with pressure (C) Is independent of temperature & pressure (D) Increases with pressure

Last Answer : (D) Increases with pressure

. Pick out the wrong statement. (A) The eddy viscosity is a function of(B) The eddy viscosity is a fluid property(C) The viscosity of gas increases with increase in temperature(D) The viscosity of a liquid increases with decrease in temperature the type of turbulence involved

Description : . Pick out the wrong statement. (A) The eddy viscosity is a function of the type of turbulence involved (B) The eddy viscosity is a fluid property (C) The viscosity of gas increases with increase in temperature (D) The viscosity of a liquid increases with decrease in temperature

Last Answer : (B) The eddy viscosity is a fluid property

A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length (A) Decreases (B) Increases (C) Is at the highest allowable temperature throughout (D) First increases and then decreases

Description : A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length (A) ... Increases (C) Is at the highest allowable temperature throughout (D) First increases and then decreases

Last Answer : (C) Is at the highest allowable temperature throughout

If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as (A) Solubility increases as temperature increases (B) Solubility increases as temperature decreases (C) Solubility is independent of temperature (D) Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Description : If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as (A) Solubility increases as temperature ... (D) Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution

Last Answer : (B) Solubility increases as temperature decreases

Pick out the wrong statement. (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature (B) Normally, the gases which are easily liquefied are more soluble in common solvents (C) The gases which are capable of forming ions in aqueous solution are much more soluble in water than in other solvents (D) At constant pressure, solubility of a gas in a liquid increases with rise in temperature

Description : Pick out the wrong statement. (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature (B) Normally, the gases which are easily liquefied are more soluble ... (D) At constant pressure, solubility of a gas in a liquid increases with rise in temperature

Last Answer : (A) At constant pressure, solubility of a gas in a liquid diminishes with rise in temperature

The dynamic viscosity of the liquid __________ with rise in temperature. (A) Remain unaffected (B) Increases (C) Decreases (D) None of these

Description : The dynamic viscosity of the liquid __________ with rise in temperature. (A) Remain unaffected (B) Increases (C) Decreases (D) None of these

Last Answer : Answer: Option C

When gas changes to liquid through the process of condensation, the temperature A] Increases. B] Decreases C] Remains constant. D] None of the mentioned

Description : When gas changes to liquid through the process of condensation, the temperature A] Increases. B] Decreases C] Remains constant. D] None of the mentioned

Last Answer : C] Remains constant.

The boiling point of normal paraffinic (pron: pair-ah-FIN-ik) hydrocarbons increases with the number of carbon atoms per molecule. What is the smallest number of carbon atoms a normal paraffinic hydrocarbon can have and still be a liquid at room temperature (70-75 degrees Fahrenheit) and 1 atmosphere pressure.

Description : The boiling point of normal paraffinic (pron: pair-ah-FIN-ik) hydrocarbons increases with the number of carbon atoms per molecule. What is the smallest number of carbon atoms a normal paraffinic ... and still be a liquid at room temperature (70-75 degrees Fahrenheit) and 1 atmosphere pressure.

Last Answer : ANSWER: FIVE

What is the plane of contact of the troposphere and stratosphere? -Do You Know?

Description : What is the plane of contact of the troposphere and stratosphere? -Do You Know?

Last Answer : answer:

What do the contact of two air masses differing sharply in humidity originate? -Do You Know?

Description : What do the contact of two air masses differing sharply in humidity originate? -Do You Know?

Last Answer : answer:

Something that spreads through actual contact -Do You Know?

Description : Something that spreads through actual contact -Do You Know?

Last Answer : Contagious, literally communicable by contact, describes a very easily transmitted disease as influenza or the common cold. Infectious refers to a disease involving a microorganism that can be ... person to another only by a specific kind of contact; venereal diseases are usually infectious.

Contact force always acts at A. acute angles to the surface producing it B. right angles to the surface producing it C. obtuse angle to the surface producing it D. parallel to the surface producing it

Description : Contact force always acts at A. acute angles to the surface producing it B. right angles to the surface producing it C. obtuse angle to the surface producing it D. parallel to the surface producing it

Last Answer : right angles to the surface producing it

In case of partial bearing, the angle of contact of the bushing with the journal is (A) 270° (B) More than 180° (C) Less than 180° (D) 360°

Description : In case of partial bearing, the angle of contact of the bushing with the journal is (A) 270° (B) More than 180° (C) Less than 180° (D) 360°

Last Answer : (C) Less than 180°

In case of full journal bearing, the angle of contact of the bushing with the journal is (A) 60° (B) 90° (C) 180° (D) 360°

Description : In case of full journal bearing, the angle of contact of the bushing with the journal is (A) 60° (B) 90° (C) 180° (D) 360°

Last Answer : (D) 360°

In case of partial bearing, the angle of contact of the bushing with the journal is usually (A) 120° (B) 180° (C) 45° (D) 360°

Description : In case of partial bearing, the angle of contact of the bushing with the journal is usually (A) 120° (B) 180° (C) 45° (D) 360°

Last Answer : (A) 120°

Function of idler pully are a. to increase the angle of contact of belt on pully b. maintain belt tension as belt stretches c. canter to centre distance remain same d. all the above

Description : Function of idler pully are a. to increase the angle of contact of belt on pully b. maintain belt tension as belt stretches c. canter to centre distance remain same d. all the above

Last Answer : d. all the above

Select the INCORRECT statement concerning the muscular system. a) Bones contact other bones at joints. b) Flexors decrease the angle of a joint. c) Adductors move a limb away from the midline. d) Tendons attach muscle to bone.

Description : Select the INCORRECT statement concerning the muscular system. a) Bones contact other bones at joints. b) Flexors decrease the angle of a joint. c) Adductors move a limb away from the midline. d) Tendons attach muscle to bone.

Last Answer : ANSWER: C -- ADDUCTORS MOVE A LIMB AWAY FROM THE MIDLINE. 

If one wants to throw a cricket ball to the maximum distance, then at which angle should he throw it ? -Do You Know?

Description : If one wants to throw a cricket ball to the maximum distance, then at which angle should he throw it ? -Do You Know?

Last Answer : answer:

A small weight put on the pressure cooker increases the pressure of the steam because (a) It is air tight (b) The area of contact is very small (c) The density of metal is very high (d) The pressure builds up irrespective of the weight placed

Description : A small weight put on the pressure cooker increases the pressure of the steam because (a) It is air tight (b) The area of contact is very small (c) The density of metal is very high (d) The pressure builds up irrespective of the weight placed

Last Answer : Ans:(b)

A problem encountered by service companies that change high -contact services into low - contact services is that the A)service becomes more expensive to deliver. B)quality of the service usually declines. C)service becomes less personalised. D)time required to deliver the service increases.

Description : A problem encountered by service companies that change high-contact services into low-contact services is that the A)service becomes more expensive to deliver. B)quality of the service usually declines. C)service becomes less personalised. D)time required to deliver the service increases.

Last Answer : C)service becomes less personalised.

According to the law of demand, what happens when price increases? -Do You Know?

Description : According to the law of demand, what happens when price increases? -Do You Know?

Last Answer : answer:

How can the quantity of water vapour the atmosphere hold increases? -Do You Know?

Description : How can the quantity of water vapour the atmosphere hold increases? -Do You Know?

Last Answer : answer:

A small weight is put on the pressure cooker. It increases the pressure of the steam. Why? -Do You Know?

Description : A small weight is put on the pressure cooker. It increases the pressure of the steam. Why? -Do You Know?

Last Answer : answer:

Which one is olive drab and chemically treated to change color when it comes in contact with liquid nerve or blister?

Description : Which one is olive drab and chemically treated to change color when it comes in contact with liquid nerve or blister?

Last Answer : M9

Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. Bile salts are detergents, amphiphilic molecules, i.e., molecules with a polar water-soluble portion and a non-polar fat-soluble portion. This feature allows bile salts to enclose fats inside water-soluble micelles in a process called emulsification for them to be in contact with intestinal lipases, enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder

Last Answer : What is the adnexal organ of the digestive system in which bile is stored?

Spirit in contact with body gives cool sensation because it is – (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Description : Spirit in contact with body gives cool sensation because it is – (1) liquid (2) transparent (3) highly volatile (4) a good conductor

Last Answer : (3) highly volatile Explanation: Spirit is very volatile. So when it is exposed, it evaporates rapidly to the air if released into the environment, producing a cool effect.

Stage efficiency in a leaching process depends on the (A) Time of contact between the solid and the solution (B) Rate of diffusion of the solute through the solid and into the liquid (C) Both (A) and (B) (D) Vapour pressure of the solution

Description : Stage efficiency in a leaching process depends on the (A) Time of contact between the solid and the solution (B) Rate of diffusion of the solute through the solid and into the liquid (C) Both (A) and (B) (D) Vapour pressure of the solution

Last Answer : (C) Both (A) and (B)

For absorbers, high pressure drop results in (A) Increased efficiency (B) Decreased efficiency (C) High operating cost (D) Better gas liquid contact

Description : For absorbers, high pressure drop results in (A) Increased efficiency (B) Decreased efficiency (C) High operating cost (D) Better gas liquid contact

Last Answer : (C) High operating cost

The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

Description : The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) ... contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty? (A) Sieve plate column (B) Bubble cap column (C) Randomly packed column (D) Wetted wall column

Description : Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty? (A) Sieve plate column (B) Bubble cap column (C) Randomly packed column (D) Wetted wall column

Last Answer : (D) Wetted wall column