What is the normal concentration of carbon dioxide in the air?

What is the normal concentration of carbon dioxide in the air?
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Description : Which of the following causes death by asphyxiation, if its presence inatmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? (A) Benzopyrene (B) Peroxyacetyl nitrate (C) Carbon monoxide (D) Sulphur dioxide

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Why normal rain is slightly acidic? A. due to presence of dust in air B. carbon dioxide and water in clouds react to form carbonic acid (Answer) C. Ozone depletion D. All of these

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Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates

Description : Which of the following is NOT a means of preparing carbon dioxide? w) burning coke in the absence of air x) combustion of methane y) heating certain normal carbonates z) action of acids on carbonates

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What is The atmospheric concentration of carbon dioxide is regulated by?

Description : What is The atmospheric concentration of carbon dioxide is regulated by?

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What effect would a low carbon dioxide concentration have on the rate of photosynthesis?

Description : What effect would a low carbon dioxide concentration have on the rate of photosynthesis?

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How does the pulmonary ventilation affect the carbon dioxide concentration in blood?

Description : How does the pulmonary ventilation affect the carbon dioxide concentration in blood?

Last Answer : What happens to the carbon dioxide concentration and to the blood pH when the respiratory frequency is either lowered or increased?

An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is: (A) 9.21 (B) 4.605 (C) 100 (D) 0.001

Description : An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is: (A) 9.21 (B) 4.605 (C) 100 (D) 0.001

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The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

Description : The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

Last Answer : (B) 30 ppm

The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

Description : The average concentration of carbon dioxide in the atmosphere is : (A) 0.03 ppm (B) 30 ppm (C)0.3 ppm (D) 300 ppm

Last Answer : (D) 300 ppm

Pick out the wrong statement. (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions (B) Inhalation of pollutant carbon monoxide results in death by asphyxiation (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles (D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere

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Last Answer : (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles

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Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

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Fruit stored in a cold chamber exhibit longer storage life because – a. exposure to sunlight is prevented b. the concentration of carbon dioxide in the environment is increased c. the rate of respiration is decreased d. there is increase in humidity

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Last Answer : c. the rate of respiration is decreased

The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Description : The concentration of carbon dioxide in the atmosphere is in the range of: w) 1-10 parts per million x) 10-100 parts per million y) 100-1000 parts per million z) 1000-10,000 parts per million

Last Answer : ANSWER: Y -- 100-1000 PARTS PER MILLION (the exact number is 350 ppm as of the time of this article)

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

Fluorosis (a bone disease) is caused by the presence of high concentration of __________ in atmospheric air. (A) Hydrocarbons (B) Hydrogen fluoride (C) Hydrogen sulphides (D) Nitrogen dioxide

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Higher concentration of nitrogen dioxide in atmospheric air causes (A) Cancer (B) Bronchitis (C) Asphyxiation (D) Corrosion

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From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Last Answer : (A) 5

What is the normal amount of carbon dioxide in the atmosphere ?

Description : What is the normal amount of carbon dioxide in the atmosphere ?

Last Answer : The normal amount of carbon dioxide in the atmosphere is 0.03 percent.

Which of the following statement(s) is/are true concerning CO2 transfer in the lung? a. Carbon dioxide excretion is a direct function of alveolar ventilation b. Normally end tidal CO2 should be identical to PaCO2 c. The gradient between end tidal and arterial CO2 can be an indirect measure of nonperfused alveoli d. Positive pressure ventilation under normal airway pressures creates a significant end tidal PaCO2 gradient

Description : Which of the following statement(s) is/are true concerning CO2 transfer in the lung? a. Carbon dioxide excretion is a direct function of alveolar ventilation b. Normally end tidal ... d. Positive pressure ventilation under normal airway pressures creates a significant end tidal PaCO2 gradient

Last Answer : Answer: a, b, c The amount of carbon dioxide excretion is directly related to alveolar ventilation. While oxygenation is a function of matching blood flow to alveoli, carbon dioxide excretion is ... high (over 30 cm H2O) and the compression volume is a significant component of each exhaled breath

A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure ofabout 67 kg/cm. The refrigerant used is (a) Ammonia (b) Carbon dioxide (c) Freon (d) Brine

Description : A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure ofabout 67 kg/cm. The refrigerant used is (a) Ammonia (b) Carbon dioxide (c) Freon (d) Brine

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The carbon dioxide level of the blood level is higher than normal. Does the brain:

Description : The carbon dioxide level of the blood level is higher than normal. Does the brain:

Last Answer : increase the rate of breathing and pulse rate

How does carbon dioxide from the air enter the leaves of a plant to be used in photosynthesis ? -Science

Description : How does carbon dioxide from the air enter the leaves of a plant to be used in photosynthesis ? -Science

Last Answer : The carbon dioxide gas enters the leaves of the plants through the stomata present on their surface. (b) The water required by the plants for photosynthesis is absorbed by the roots of ... the xylem vessels to the leaves where it reaches the photosynthetic cells and utilized in photosynthesis.

Partial pressure of carbon dioxide in Alveoli , atmospheric air and tissures will be `:-`

Description : Partial pressure of carbon dioxide in Alveoli , atmospheric air and tissures will be `:-`

Last Answer : Partial pressure of carbon dioxide in Alveoli , atmospheric air and tissures will be `:-` A. 0.3,40,45 B. 40,0.3,45 C. 0.3,104,28 D. 104,159,40

Why is carbon dioxide pulled out of the air?

Description : Why is carbon dioxide pulled out of the air?

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Who "People breathe in oxygen molecules from the air and exhale carbon dioxide molecules. Because of this, the air is full of carbon dioxide and oxygen mixed together. What is this an example of"?

Description : Who "People breathe in oxygen molecules from the air and exhale carbon dioxide molecules. Because of this, the air is full of carbon dioxide and oxygen mixed together. What is this an example of"?

Last Answer : Increase in entropy

Which of the following complications of TPN are appropriately managed with the listed treatment? a. Air embolism—place patient in reverse Trendelenburg and the left lateral decubitus position and aspirate venous air b. Hyperchloremic metabolic acidosis—give sodium and potassium as acetate salts c. Carbon dioxide retention—decrease glucose calories and replace with fat d. Line sepsis—intravenous antibiotics

Description : Which of the following complications of TPN are appropriately managed with the listed treatment? a. Air embolism-place patient in reverse Trendelenburg and the left lateral decubitus position ... dioxide retention-decrease glucose calories and replace with fat d. Line sepsis-intravenous antibiotics

Last Answer : Answer: b, c A number of complications of TPN can occur which can be divided into three types: mechanical, metabolic, and infectious

Coke is made by heating coal in the absence of air at: A. 700 °C B. 1300 °C C. 900 °C D. 1700 °C ANSWER: Why are soft drinks made with chilled water rather than water at room temperature? A. Ingredients dissolve better in chilled water B. Chilled water enhances the taste C. Chilled water attracts more carbon dioxide D. Chilled water is more hygienic

Description : Coke is made by heating coal in the absence of air at: A. 700 °C B. 1300 °C C. 900 °C D. 1700 °C ANSWER: Why are soft drinks made with chilled water rather than water at room ... B. Chilled water enhances the taste C. Chilled water attracts more carbon dioxide D. Chilled water is more hygienic

Last Answer : ANSWER: C

Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % D. 0.03%

Description : Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % D. 0.03%

Last Answer : ANSWER: D

Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % 20 D. 0.03%

Description : Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % 20 D. 0.03%

Last Answer : ANSWER: D

Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % D. 0.03%

Description : Air contains volume of carbon dioxide approximately _____. A. 3 % B. 33% C. 0.3 % D. 0.03%

Last Answer : ANSWER: D

What is done to raise the dough while making bread? (a) Alcohol is added (b) yeast is added (c) Carbon dioxide is passed (d) Air is passed

Description : What is done to raise the dough while making bread? (a) Alcohol is added (b) yeast is added (c) Carbon dioxide is passed (d) Air is passed

Last Answer : Ans:(b)

The substances that cause air pollution are 1. Smoke 2. Sulphur dioxide 3. Argon 4. Carbon monoxide The correct answers are: (a) 1, 2 and 3 (b) 1, 2, 3 and 4 (c) 2, 3 and 4 (d) 1, 2 and 4

Description : The substances that cause air pollution are 1. Smoke 2. Sulphur dioxide 3. Argon 4. Carbon monoxide The correct answers are: (a) 1, 2 and 3 (b) 1, 2, 3 and 4 (c) 2, 3 and 4 (d) 1, 2 and 4

Last Answer : Ans:(d)

The gas inside an electric bulb is (a) air (b) oxygen (c) nitrogen (d) carbon dioxide

Description : The gas inside an electric bulb is (a) air (b) oxygen (c) nitrogen (d) carbon dioxide

Last Answer : Ans:(c)

Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen

Description : Of all the gases present in the air, which one of the following is the highest in percentage? (a) Carbon dioxide (b) Hydrogen (c) Nitrogen (d) Oxygen

Last Answer : Ans:(c)

The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Description : The most serious air pollutant causing health hazard is – (1) Sulphur dioxide (2) Carbon monoxide (3) Ozone (4) Nitrogen oxide

Last Answer : (1) Sulphur dioxide Explanation: Sulphur dioxide (SO2) is considered as the most serious single air pollutant causing health hazard, obstructing breathing. It always leads to airways inflammation, ... , pulmonary oedema, heart failure and circulatory collapse. It is also responsible for acid rain.

The carbon dioxide content in the air that we exhale is about - (1) 4% (2) 8% (3) 12% (4) 16%

Description : The carbon dioxide content in the air that we exhale is about - (1) 4% (2) 8% (3) 12% (4) 16%

Last Answer : (1) 4% Explanation: The air we breathe in contains about 0.04% carbon dioxide. The air we breathe out contains about 4% carbon dioxide. In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.

Which of the following process-es does not increase the amount of carbon dioxide in air? (1) Breathing (2) Photosynthesis (3) Burning of petrol (4) Aerobic decay of vegetation

Description : Which of the following process-es does not increase the amount of carbon dioxide in air? (1) Breathing (2) Photosynthesis (3) Burning of petrol (4) Aerobic decay of vegetation

Last Answer : (2) Photosynthesis Explanation: Plants reduce the CO2, because they use it with photosynthesis. They use it to give oxygen and carbohydrates as the final product. It is for this reason that ... from exposure to the sun's ultraviolet (UV) radiation, especially during the early morning hours.

Which one of the following has most corrosive effect? (1) Air (2) Carbon dioxide (3) Plants (4) Water

Description : Which one of the following has most corrosive effect? (1) Air (2) Carbon dioxide (3) Plants (4) Water

Last Answer : (4) Water Explanation: Common corrosives are either strong acids, strong bases, or concentrated solutions of certain weak acids or weak bases.

The carbon dioxide content in the air that we exhale is about - (1) 4% (2) 8% (3) 12% (4) 16%

Description : The carbon dioxide content in the air that we exhale is about - (1) 4% (2) 8% (3) 12% (4) 16%

Last Answer : (1) 4% Explanation: Carbon dioxide exists in Earth's atmosphere in this state, as a trace gas at a concentration of 0.039 per cent by volume. The air we breathe in contains about 0. ... In other words, exhaled air contains about 100 times the concentration of carbon dioxide that inhaled air does.

Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Description : Water boils at a lower temperature on the hills because – (1) it is cold on the hills (2) there is less carbon dioxide on the hills (3) there is a decrease in air pressure on the hills (4) There is less oxygen

Last Answer : (3) there is a decrease in air pressure on the hills Explanation: Water boils at a lower temperature on top of a mountain because there is less air pressure on the molecules. Water boils when the ... at high elevations foods that are cooked by boiling take a little longer to cook at high elevation.

Which of the following auto mobile gases is not considered to be an air pollutant? (1) Carbon dioxide (2) Carbon monoxide (3) Sulfur dioxide (4) Nitrogen dioxide

Description : Which of the following auto mobile gases is not considered to be an air pollutant? (1) Carbon dioxide (2) Carbon monoxide (3) Sulfur dioxide (4) Nitrogen dioxide

Last Answer : (1) Carbon dioxide Explanation: There are mainly six air pollutants: carbon monoxide lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide.

Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Description : Which of the following is usually not an air-pollutant? (1) Hydrocarbons (2) Sulphur dioxide (3) Carbon dioxide (4) Nitrous oxide

Last Answer : (4) Nitrous oxide Explanation: The six air pollutants are carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide. The combustion of gasoline and other ... as laughing gas, is used in surgery and dentistry for its an-aesthetic and analgesic effects.

The most common cause of pollution of air is – (1) Carbon dioxide (2) Carbon monoxide (3) Sulphur dioxide (4) Smoke

Description : The most common cause of pollution of air is – (1) Carbon dioxide (2) Carbon monoxide (3) Sulphur dioxide (4) Smoke

Last Answer : (3) Sulphur dioxide Explanation: The most common sources of air pollution include particulates, ozone, nitrogen dioxide, and sulfur dioxide. The largest sources of SO2 emissions are from fossil fuel ... non-road equipment. It is linked with a number of adverse effects on the respiratory system.

Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Description : Silver gets corroded due to ______ in air. (1) Oxygen (2) Hydrogen Sulphide (3) Carbon dioxide (4) Nitrogen

Last Answer : (2) Hydrogen Sulphide Explanation: Silver is a fairly stable metal and under normal circumstances does not corrode quickly. However, it is particularly susceptible to the effects of the sulfide ... atmosphere, especially in marine environment, and readily forms a surface tarnish of silver sulphide.