Oxygen which is vital for life is a product of photosynthesis and comes from (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements

Oxygen which is vital for life is a product of photosynthesis and comes from (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements
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Oxygen which is vital for life is a product of photosynthesis and comes from – (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements

Description : Oxygen which is vital for life is a product of photosynthesis and comes from – (1) carbonates from soil (2) carbon dioxide (3) water (4) oxides of mineral elements

Last Answer : (3) water Explanation: The unusually high concentration of oxygen has on Earth is the result of the oxygen cycle. This biogeochemical cycle describes the movement of oxygen within and ... Photosynthesis releases oxygen into the atmosphere, while respiration and decay remove it from the atmosphere.

Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Description : Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Last Answer : (4) Water Explanation: Since water and carbon dioxide are both compounds which contain oxygen, it is possible to obtain oxygen from either. The oxygen produced from photosynthesis is not released into the ... the air. Scientists agree that there's oxygen from ocean plants in every breath we take.

Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Description : Where does the oxygen that keeps us alive come from? (1) Carbon dioxide (2) Carbonates absorbed from soil (3) Oxides of minerals (4) Water

Last Answer : Water

Where does the oxygen that keeps us alive come from? A. Carbon dioxide B. Carbonates absorbed from soil C. Oxides of minerals D. Water

Description : Where does the oxygen that keeps us alive come from? A. Carbon dioxide B. Carbonates absorbed from soil C. Oxides of minerals D. Water

Last Answer : ANSWER: A

The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Description : The oxygen liberated during photosynthesis comes from (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Last Answer : Water

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

Last Answer : ANSWER: W -- BURNING COKE IN THE ABSENCE OF AIR 

During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?

Description : During photosynthesis a plant uses energy from the sun to break apart glucose water and carbon dioxide. These molecules are used to make sugar to feed the plant and the plant then releases a by-product oxygen that humans breathe. this example shows that?

Last Answer : energy is not created but transferred to different forms (apex gang ;)

In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is: a) hydrogen b) carbon dioxide c) oxygen d) methane

Description : In the first stage of photosynthesis, light energy splits water molecules leaving a by-product which is released. This byproduct is: a) hydrogen b) carbon dioxide c) oxygen d) methane

Last Answer : ANSWER: C -- oxygen 

Carbon and oxygen combine to form two oxides, carbon monoxide and carbon dioxide in which the ratio of the weights of carbon and oxygen is respectivel

Description : Carbon and oxygen combine to form two oxides, carbon monoxide and carbon dioxide in which the ratio of the weights of carbon and oxygen is respectivel

Last Answer : Carbon and oxygen combine to form two oxides, carbon monoxide and carbon dioxide in which the ... conservation of mass D. Law of constant proportions

Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) two ores [X] and [Y] show the following reactivity. (i)

Description : Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) two ores [X] and [Y] show the following reactivity. (i)

Last Answer : Amongst the various ores of a metal (M) (sulphide, carbonates, oxides, hydrated or hydroxides) ... and hydroxide ores D. Carbonate and oxide ores

Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Description : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most stable thermally?

Last Answer : Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which of the metal carbonates is most ... C. `SrCO_(3)` D. `BaCO_(3)`

The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Description : The majority of carbon dioxide produced by our body cells is transported to the lungs as (a) attached to haemoglobin (b) dissolved in the blood (c) as bicarbonates (d) as carbonates.

Last Answer : (c) as bicarbonates

Water vapour comes out from the plant leaf through the stomatal opening. Through the samestomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options. (a) The above processes happen only during night time. (b) One process occurs during day time and the other at night. (c) Both processes cannot happen simultaneously. (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different

Description : Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above ... Both processes can happen together because the diffusion coefficient of water and CO2 is different

Last Answer : (d) Both processes can happen together because the diffusion coefficient of water and CO2 is different

The oxygen liberated during Photosynthes is comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Description : The oxygen liberated during Photosynthes is comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Last Answer : (1) Water Explanation: The oxygen produced during photosynthesis comes from water. The electrons excited by light in the chlorophyll molecule are replaced by electrons produced from the oxidation of water into oxygen.

The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction?(a) Magnesium and Molybdenum (b) Magnesium and Chlorine (c) Manganese and Chlorine (d) Manganese and Potassium

Description : The oxygen evolved during photosynthesis, comes from water molecules. Which one of the following pairs of elements is involved in this reaction? (a) Magnesium and Molybdenum (b) Magnesium and Chlorine (c) Manganese and Chlorine (d) Manganese and Potassium

Last Answer : (c) Manganese and Chlorine

What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) (3) Carbon dioxide (CO2) and Carbon monoxide (CO) (4) Oxides of carbon (COx) and Oxides of nitrogen (NOx)

Description : What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) (3) Carbon dioxide (CO2) and Carbon monoxide (CO) (4) Oxides of carbon (COx) and Oxides of nitrogen (NOx)

Last Answer : (2) Sulphur dioxide (SO2) and Nitrogen oxides (NOx) Explanation: Acid rain is caused by emissions of sulfur dioxide (SO2) and nitrogen oxide (NO), which react with the water molecules in the ... in acid rain can cause paint to peel, corrosion of steel structures and weathering of stone buildings.

Global warming is mainly due to accumulation of – (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide

Description : Global warming is mainly due to accumulation of – (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide

Last Answer : (3) Carbon dioxide Explanation: Global Warming refers to average increase in the earth's temperature due to increase in pollution which results in greenhouse effect which in turn leads to climate ... dioxide accumulate into the atmosphere and trap heat that would normally exit into the outer space.

What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) (3) Carbon dioxide (CO2 ) and Carbon monoxide (CO) (4) Oxides of carbon (COx ) and Oxides of nitrogen (NOx )

Description : What are the components responsible for acid rain? (1) Nitrogen monoxide (NO) and Carbon monoxide (CO) (2) Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) (3) Carbon dioxide (CO2 ) and Carbon monoxide (CO) (4) Oxides of carbon (COx ) and Oxides of nitrogen (NOx )

Last Answer : Sulphur dioxide (SO2 ) and Nitrogen oxides (NOx ) 

Global warming is mainly due to accumulation of (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide

Description : Global warming is mainly due to accumulation of (1) Oxides of nitrogen (2) Oxides of sulphur (3) Carbon dioxide (4) Carbon monoxide

Last Answer : Carbon dioxide 

Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Last Answer : (2) Water Explanation: Oxygen liberated during photosynthesis is coming m6t.o create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.

The source of oxygen generated during photosynthesis is: (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Description : The source of oxygen generated during photosynthesis is: (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Last Answer : (1) water Explanation: The source of oxygen produced during photosynthesis is the splitting of water molecule into hydrogen and oxygen. Photosynthesis uses carbon dioxide and water, releasing ... inside organelles called chloroplasts, while in bacteria they are embedded in the plasma membrane.

The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Description : The source of oxygen generated during photosynthesis is : (1) water (2) carbon dioxide (3) chlorophyll (4) mesophyll cells

Last Answer : water

Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere

Last Answer : Water

If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring ? Justify your answer. -Science

Description : If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring ? Justify your answer. -Science

Last Answer : When photosynthesis occurs during the day, the carbon dioxide released by plants by respiration is all used up and not released. Similarly, some of the oxygen produced during photosynthesis is used up in ... and taking in oxygen even during the day, it means that no photosynthesis is taking place.

To carry out photosynthesis plants require – (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Description : To carry out photosynthesis plants require – (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Last Answer : (2) Carbon-dioxide Explanation: In photosynthesis, carbon dioxide is converted into sugars in a process called carbon fixation. Carbon fixation is a redox reaction, so photosynthesis needs to ... the electrons needed to convert carbon dioxide into a carbohydrate, which is a reduction reaction.

The gas released during photosynthesis : (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Sulphur dioxide

Description : The gas released during photosynthesis : (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Sulphur dioxide

Last Answer : (2) Oxygen Explanation: In plants, algae, and cyanobacteria, photosynthesis uses carbon dioxide and water, releasing oxygen as a waste product. Photosynthesis is vital for all aerobic life on Earth. In ... this process is: Carbon dioxide + Water + Light energy --> Carbohydrate + Oxygen + Water

During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : During photosynthesis in plants, the gas evolved is - (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : (3) Oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... , through primary production, or indirectly, as the ultimate source of the energy in their food.

During photosynthesis the liberated gas is (1) Carbon dioxide (2) oxygen (3) Nitrogen (4) Hydrogen

Description : During photosynthesis the liberated gas is (1) Carbon dioxide (2) oxygen (3) Nitrogen (4) Hydrogen

Last Answer : (2) oxygen Explanation: Photosynthesis is a process used by plants and other organisms to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism ... water, releasing oxygen as a waste product.' Photosynthesis is vital for all aerobic life on Earth.

Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide

Description : Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen (Answer) D. Carbon dioxide

Last Answer : C. Oxygen (Answer)

To carry out photosynthesis plants require (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Description : To carry out photosynthesis plants require (1) Oxygen (2) Carbon-dioxide (3) Nitrogen (4) Hydrogen

Last Answer : Carbon-dioxide

The gas released during photosynthesis : (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Sulphur dioxide

Description : The gas released during photosynthesis : (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Sulphur dioxide

Last Answer : Oxygen

During photosynthesis green plants absorb (1) nitrogen (2) carbon dioxide (3) carbon monoxide (4) oxygen

Description : During photosynthesis green plants absorb (1) nitrogen (2) carbon dioxide (3) carbon monoxide (4) oxygen

Last Answer : carbon dioxide

During photosynthesis in plants, the gas evolved is (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Description : During photosynthesis in plants, the gas evolved is (1) Carbon dioxide (2) Nitrogen (3) Oxygen (4) Hydrogen

Last Answer : Oxygen

During photosynthesis the liberated gas is : (1) Carbon dioxide (2) Oxygen (3) Nitrogen (4) Hydrogen

Description : During photosynthesis the liberated gas is : (1) Carbon dioxide (2) Oxygen (3) Nitrogen (4) Hydrogen

Last Answer : Oxygen

What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

Description : What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

Last Answer : ANSWER: W -- ACIDIC AND BASIC OXIDES 

The oxygen liberated during photosymthesis comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Description : The oxygen liberated during photosymthesis comes from - (1) Water (2) Carbon dioxide (3) Glucose (4) Chlorophyll

Last Answer : (1) Water Explanation: The oxygen produced during photosynthesis comes from water. The electrons excited by light in the chlorophyll molecule are replaced by electrons produced from the oxidation ... combines water and carbon dioxide into sugars, leaving oxygen gas as a waste product.

(1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, react in the atmosphere in the presence of sunlight containing ultra violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Description : (1) the action of ultraviolet rays on oxygen Explanation: The majority of tropospheric ozone formation occurs when nitrogen oxides (NOx), carbon monoxide (CO ) and volatile organic compounds (VOCs), such as xylene, ... violet rays. NOx, CO, and VOCs are called ozone precursors. CO + 2O2 + CO2 + O3

Last Answer : Water is not effective in extinguishing a fire caused by petrol because - (1) the flame is too hot for water to cool it down (2) water and petrol react chemically (3) water and petrol are ... (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn

Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules from/to their cells? Why isn't that solution possible for larger animals?

Description : Oxygen comes from the environment and carbon dioxide in the end returns to the environment. How do small animals solve the problem of taking away and bringing these molecules from/to their cells? Why isn't that solution possible for larger animals?

Last Answer : Small animals whose tissues make direct contact or are very close to the environment, like cnidarians and poriferans, make gas exchange by diffusion. Larger animals with cells without direct ... the circulatory systems play this role. Breathing Process Review - Image Diversity: respiratory system

In an acid base reaction which product is produced along with a salt? (1) Hydrogen gas (2) Oxygen gas (3) Carbon dioxide (4) Water

Description : In an acid base reaction which product is produced along with a salt? (1) Hydrogen gas (2) Oxygen gas (3) Carbon dioxide (4) Water

Last Answer : (4) Water Explanation: When an acid and a base are placed together, they read to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water.

Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Methane B. Chlorofluorocarbons C. Nitrogen oxides D. Carbon dioxide

Description : Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Methane B. Chlorofluorocarbons C. Nitrogen oxides D. Carbon dioxide

Last Answer : ANSWER: C

Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Methane B. Chlorofluorocarbons C. Nitrogen oxides D. Carbon dioxide

Description : Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Methane B. Chlorofluorocarbons C. Nitrogen oxides D. Carbon dioxide

Last Answer : ANSWER: C

Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Carbon dioxide B. Chlorofluorocarbons (Answer) C. Nitrogen oxides D. Methane

Description : Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere? A. Carbon dioxide B. Chlorofluorocarbons (Answer) C. Nitrogen oxides D. Methane

Last Answer : B. Chlorofluorocarbons (Answer)

Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide

Description : Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide

Last Answer : (D) Carbon monoxide

Chief air pollutant which is likely to deplete ozone layer is a) Sulphur dioxide b) Carbon dioxide c) Carbon monoxide d) Nitrogen oxides and Fluorocarbons.

Description : Chief air pollutant which is likely to deplete ozone layer is a) Sulphur dioxide b) Carbon dioxide c) Carbon monoxide d) Nitrogen oxides and Fluorocarbons.

Last Answer : d) Nitrogen oxides and Fluorocarbons

A waste product in the metabolism of glucose in cells is: w) oxygen x) methane y) carbon dioxide z) urea

Description : A waste product in the metabolism of glucose in cells is: w) oxygen x) methane y) carbon dioxide z) urea

Last Answer : ANSWER: C -- CARBON DIOXIDE 

The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `H_(2)O` D. `CO_(2)`

The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... P_(2)O_(5)` D. `FeO, CuO`

The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... `Mn_(3)O_(4),N_(2)O_(5)`

The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their ... C. CO,NO D. `Na_(2),CaO`

The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Description : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid-base characteristics or on

Last Answer : The binary compounds of oxygen with other elements are called oxides. They are classified depending either upon their acid- ... . `N_(2)O, C_(3)O_(2)`