When does diffusion of gases takes place?

When does diffusion of gases takes place?
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1 Answer

Answer :

Diffusion of gases takes place when the gases do not react with one another.
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Related questions

What is the relationship between rate of diffusion and mass of gas?

Description : What is the relationship between rate of diffusion and mass of gas?

Last Answer : Rate of diffusion is inversely proportional to mass of gas.

State Graham’s law of diffusion.

Description : State Graham’s law of diffusion.

Last Answer : “The rate of diffusion of a gas is inversely proportional to the square root of its density”.

What is rate of diffusion?

Description : What is rate of diffusion?

Last Answer : The rate of diffusion of a gas is the volume of gas diffusing per unit time.

What is meant by diffusion?

Description : What is meant by diffusion?

Last Answer : The random movement of gaseous molecules from the region of higher concentration to the region of lower concentration is known as diffusion.

What is the relationship between volume and temperature of gases when pressure is kept constant?

Description : What is the relationship between volume and temperature of gases when pressure is kept constant?

Last Answer : Volume of a fixed mass of gas is directly proportional to its absolute temperature.

Mention the features of gases.

Description : Mention the features of gases.

Last Answer : a) Gases are highly compressible. b) Gases exert pressure equally in all directions. c) Gases mix evenly in all proportions without any mechanical aid. d) Gases are least dense than other two states of matter.

Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Description : Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.

Last Answer : a) Soda bottles are often labelled store in cool and dry place . The carbon dioxide filled in soda bottles on exposure to heat, expands because the gas inside the bottle expands as temperature ... . When football is taken out, its temperature decreases so the volume to gas filled also decreases.

Give reason: a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived.

Description : Give reason: a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived. b) When there is L.P.G leakage, one is advised to open all doors and windows.

Last Answer : a) During the Bhopal gas tragedy, cockroaches, ants and mosquitoes survived. Methyl Isocyanate is a gas denser than air. Hence it was unable diffuse in the crevices. So these animals survived. b) ... diffusion of the LPG with air molecules is faster. Hence any damage by explosion can be prevented.

Name the gas responsible for Bhopal gas tragedy.

Description : Name the gas responsible for Bhopal gas tragedy.

Last Answer : Methyl Isocyanate which is produced by the chemical combination of phosgene gas and methyl cyanide.

Give reason: a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. b) Smell of hot food reaches faster then that of cold food.

Description : Give reason: a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. b) Smell of hot food reaches faster then that of cold food.

Last Answer : a) Burning of kerosene does not produce much smell but when the burning ceases, it produces strong smell. When kerosene is burnt, only few molecules diffuse with air after combustion. But when the ... . Smell of hot food reaches faster because rate of diffusion is faster. Cold food diffuses slowly.

Mention some applications of Boyle’s law in our daily life.

Description : Mention some applications of Boyle’s law in our daily life.

Last Answer : a) Deep sea fishes die when suddenly brought to surface due to low pressure. b) Scuba diver's life is under threat when they suddenly come to surface quickly. c) It is used in daily life situations ... to vehicle tyres. d) We feel pain in the ears when in an aeroplane during take off or landing.

Give reasons: a) Deep sea fishes die when suddenly brought to surface.

Description : Give reasons: a) Deep sea fishes die when suddenly brought to surface.b) Scuba diver’s life is under threat when they suddenly come to the surface quickly. c) Balloons pop when squeezed. d) We feel uneasy pain in the ears during take off and landing of aeroplanes.

Last Answer : a) Deep sea fishes die when suddenly brought to surface. The pressure at the bottom of the sea is more, but the pressure at the surface is less. So due to low pressure the fish dies. ... aeroplanes. When the aeroplane takes off or lands, there is imbalance in pressure inside and outside of eardrum.

How are pressure, volume and mass of a gas related?

Description : How are pressure, volume and mass of a gas related?

Last Answer : The product of the volume and pressure of a given mass of dry gas is a constant.

Give reason: When you exert pressure on air pillow, its size gets reduced.

Description : Give reason: When you exert pressure on air pillow, its size gets reduced.

Last Answer : The volume of air filled in the air pillow decreases as we increase the pressure.

State Boyle’s law

Description : State Boyle’s law

Last Answer : “At constant temperature, the volume of a given mass of dry gas is inversely proportional to its pressure”.

Why are the air bubbles smaller in size in lower layers but grows bigger as they rise up when water is boiled?

Description : Why are the air bubbles smaller in size in lower layers but grows bigger as they rise up when water is boiled?

Last Answer : Lower layers of water exert a lot of pressure on air bubbles. Hence they are smaller in size. But the pressure decreases as bubbles rise to the top. Hence they grow bigger.

What happens to the volume when the temperature is reduced to one-half according to Charles’s law?

Description : What happens to the volume when the temperature is reduced to one-half according to Charles’s law?

Last Answer : If the temperature is reduced to one-half, the volume would also be reduced to one-half.

What happens to the volume when the temperature is doubled according to Charles’s law?

Description : What happens to the volume when the temperature is doubled according to Charles’s law?

Last Answer : If the temperature is doubled, the volume would also be doubled.

State Charles’s law.

Description : State Charles’s law.

Last Answer : “At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature (Kelvin)”.

What is meant by absolute zero temperature?

Description : What is meant by absolute zero temperature?

Last Answer : The temperature -273^oC is called absolute zero or zero Kelvin.

What happens when a balloon with little air is tied to the mouth of a bottle with hot water? Why?

Description : What happens when a balloon with little air is tied to the mouth of a bottle with hot water? Why?

Last Answer : The balloon increases in size because temperature increases kinetic energy of gas molecules of balloon. This increases the random movement of gas molecules. Hence the volume increases gradually.

The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

Description : The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

Last Answer : d) simple diffusion.

What are the tiny vessels through which diffusion takes place between the blood and the body tissues?

Description : What are the tiny vessels through which diffusion takes place between the blood and the body tissues?

Last Answer : The capillaries. Check Wiki for "Capillary action".

The absorption of intact protein from the gut in the foetal and newborn animals takes place by (A) Pinocytosis (B) Passive diffusion (C) Simple diffusion (D) Active transport

Description : The absorption of intact protein from the gut in the foetal and newborn animals takes place by (A) Pinocytosis (B) Passive diffusion (C) Simple diffusion (D) Active transport

Last Answer : A

The exchange of material takes place (A) Only by diffusion (B) Only by active transport (C) Only by pinocytosis (D) All of these

Description : The exchange of material takes place (A) Only by diffusion (B) Only by active transport (C) Only by pinocytosis (D) All of these

Last Answer : D

Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids (C) Particles movement from higher concentration to lower concentration takes place in diffusion process (D) According to Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Description : Pick out the wrong statement. (A) The binary diffusivity in liquids is of the order of 10 -5 cm2 /sec (B) Molecular diffusion in solid is much faster than that in liquids ( ... Poiseuille's law, the permeability decreases with increase in temperature for flow of a gas through a given capillary

Last Answer : (B) Molecular diffusion in solid is much faster than that in liquids

The exchange of material takes place (A) Only by diffusion (B) Only by active transport (C) Only by pinocytosis (D) All of these

Description : The exchange of material takes place (A) Only by diffusion (B) Only by active transport (C) Only by pinocytosis (D) All of these

Last Answer : (D) All of these

The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized tissues perform different functions in the organism. (iv) Entire surface of the organism is in contact with the environment for taking in food. (a) (i) and (iii) (b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Description : The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized ... b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Last Answer : Answer: (c)

In single celled organisms diffusion is sufficient to meet all their requirements of food, exchange of gases or removal of wastes but it is not in case of multicellular organisms. Explain the reason for this difference. -Biology

Description : In single celled organisms diffusion is sufficient to meet all their requirements of food, exchange of gases or removal of wastes but it is not in case of multicellular organisms. Explain the reason for this difference. -Biology

Last Answer : Unicellular organisms can absorb sufficient oxygen because of its complete contact with the atmosphere, but in multicellular organisms the rate of absorption and diffusion becomes very less because all ... of oxygen to sustain life processes which cannot be fulfilled by the process of diffusion.

Why the process of diffusion is important in exchange of gases and water in the animal and plant cell ? -Biology

Description : Why the process of diffusion is important in exchange of gases and water in the animal and plant cell ? -Biology

Last Answer : Diffusion is an important in exchange of gases and water in the life of a cell, in addition to this the cell also obtain nutrition from its environment.

The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the deoxygenated blood through diffusion bec

Description : The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the deoxygenated blood through diffusion bec

Last Answer : The respiratory membranes facilitates the exchange of respiratory gases through diffusion . Oxygen enters the ... it 40mm Hg and 46 mm Hg respectively

Which of the following factor can affect the rate of diffusion of gases `?`

Description : Which of the following factor can affect the rate of diffusion of gases `?`

Last Answer : Which of the following factor can affect the rate of diffusion of gases `?` A. Thickness of the ... . Pressure of the gases D. All fo the these

Normal diffusion capacity of gases in human lungs in order is :-

Description : Normal diffusion capacity of gases in human lungs in order is :-

Last Answer : Normal diffusion capacity of gases in human lungs in order is :- A. `O_(2) gt N_(2) gt CO_(2)` B. `CO_(2) gt ... CO_(2)` D. `O_(2) gt CO_(2) gt N_(2)`

Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is nonlinear in the case of steady state unimolal unidirectional diffusion (C) Azeotropes obey Raoult's law at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Description : Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

Last Answer : (C) Azeotropes obey Raoult's law at all temperature

The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is (A) 1 (B) ∞ (C) 0.5

Description : The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is (A) 1 (B) ∞ (C) 0.5

Last Answer : (B) ∞

Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is important in problems involving gas absorption without chemical reaction (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion (D) Total reflux in case of distillation operation requires infinite number of plates for a binary system separation

Description : Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is ... reflux in case of distillation operation requires infinite number of plates for a binary system separation

Last Answer : (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion

The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp= M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.) (A) Kc = Kp = Km (B) Kc = Kp /RT = Km . RT/P (C) Kc = Kp . RT = Km . RT/p (D) None of these

Description : The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving ... (C) Kc = Kp . RT = Km . RT/p (D) None of these

Last Answer : (C) Kc = Kp . RT = Km . RT/p

Explain diffusion & its law. Also explain diffusion in gases & liquids.

Description : Explain diffusion & its law. Also explain diffusion in gases & liquids.

Last Answer : Ans : Diffusion : The spreading of a substance through medium like air or liquid is called diffusion. The rate of diffusion of a substance depends upon its molar mass or density. Example : When ... the available space due to their kinetic energy. This spreading of gas is called diffusion in gas.

Which of the following vacuum pumps operates by using a very cold surface to trap the gases on the cold surface? Is it a: w) sublimation pump x) turbo pump y) cryopump z) diffusion pump.

Description : Which of the following vacuum pumps operates by using a very cold surface to trap the gases on the cold surface? Is it a: w) sublimation pump x) turbo pump y) cryopump z) diffusion pump.

Last Answer : ANSWER: Y -- CRYOPUMP

The exchange of gases in mammals takes place in the (a) larynx (b) trachea (c) alveoli (d) bronchi

Description : The exchange of gases in mammals takes place in the (a) larynx (b) trachea (c) alveoli (d) bronchi

Last Answer : Ans:(c)

(a) “The breathing cycle is rhythmic whereas exchange of gases is a continuous process”. Justify this statement. (b) What happens if conducting tubes of circulatory system develops a leak? State in brief, how could this be avoided? (c) How opening and closing of stomata takes place? -Biology

Description : (a) “The breathing cycle is rhythmic whereas exchange of gases is a continuous process”. Justify this statement. (b) What happens if conducting tubes of circulatory system develops a leak? State in brief, how could this be avoided? (c) How opening and closing of stomata takes place? -Biology

Last Answer : (a) The breathing cycle involves inhalation and exhalation of air due to alternate expansion and contraction of thoracic cavity. Thus it is a rhythmic process. But exchange of gases is a continuous process ... pore opens up. When water moves out the guard cells shrinks and the stomatal pore closes.

(a) Draw a diagram of human respiratory system and label the following: (i) part where air is filtered by fine hair and mucus (ii) part which terminates in balloon – like structures (iii) balloon – like structures where exchange of gases takes place. (iv) part which separates chest cavity from abdominal cavity. (b) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms? -Biology

Description : (a) Draw a diagram of human respiratory system and label the following: (i) part where air is filtered by fine hair and mucus (ii) part which terminates in balloon - like structures (iii) ... (b) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms? -Biology

Last Answer : (a) (b) Quantity of dissolved oxygen is fairly low in water as compared to the amount of oxygen in air. Aquatic organisms therefore have to breath faster than terrestrial organisms to absorb the required amount of oxygen from the water.

after atoms and molecules of gases and liquids are heated they move away from the heat . what takes their place?

Description : after atoms and molecules of gases and liquids are heated they move away from the heat . what takes their place?

Last Answer : ions

The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part, A,

Description : The figure given below shows a small part of human lung where exchange of gases takes place. In which one of the options given below, the one part, A,

Last Answer : The figure given below shows a small part of human lung where exchange of gases takes place. In which ... red blood cell-transport of `CO_(2)` mainly

The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above

Description : The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above

Last Answer : (2) Stomata Explanation: Stomata are tiny pores present on the surface of the leaves via which exchange of gases takes place in the leaves for the purpose of photosynthesis. However, exchange of gases also occurs across the surface of stems, roots and leaves as well.

How excretion of gases, water & material takes place in plants?

Description : How excretion of gases, water & material takes place in plants?

Last Answer : Removal of Gases: - Green plants give off oxygen as waste in the daytime and carbon dioxide at night. Removal of Water: - Excess water is removed as water vapour by the process of ... ducts and canals present in the body of plants. They trickle out with the damaged parts. 

How exchange of gases takes place in terrestrial animals?

Description : How exchange of gases takes place in terrestrial animals? 

Last Answer : Through Trachea: - Insects and other land arthropods use tracheal tubes for exchange of gases. This is very simple and effective method. These animals have network of tracheal tubes. These tubes on ... In them the respiratory system consists of alveoli. Birds have air sacs in addition to lungs. 

The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. (a) C : Arterial capillary - Passes oxygen to tissues (b) A : Alveolar cavity - Main site of exchange of respiratory gases (c) D : Capillary wall - Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly

Description : The figure given below shows a small part of human lung where exchange of gases takes place. Select the option which represents labelled part (A, B, C or D) correctly identified along with its function. ... Exchange of O2 and CO2 takes place here (d) B : Red blood cells - Transport of CO2 mainly

Last Answer : (b) A : Alveolar cavity - Main site of exchange of respiratory gases

Thyroid gland takes up circulating iodine (A) By simple diffusion (B) By facilitated diffusion (C) By active uptake (D) In exchange for chloride

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Why does diffusion of light in the atmosphere take place? -Do You Know?

Description : Why does diffusion of light in the atmosphere take place? -Do You Know?

Last Answer : answer: