The following statements about carbon dioxide are true except:

it can be prepared by the action of acid on

C a C O_{3}

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it is used in fire extinguishers

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it dissolves in water at room temperature

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it sublimes rather than melts at

20^{\circ} C

and

1 a t m

pressure

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it is a product of photosynthesis in plants

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Solution

The correct option is C it is a product of photosynthesis in plants
Option $(E)$ is correct.

$C O_{2}$ is a reactant of photosynthesis in plants. It reacts with water in presence of sunlight to form carbohydrate (food for plants) with the release of oxygen.

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Similar questions

Select True or False in the following statements regarding photosynthesis and respiration.

1. Photosynthesis occurs only in the presence of chlorophyll.
2. Photosynthesis occurs at all time.
3. Respiration uses carbon dioxide and water.
4. In respiration carbon dioxide is released as end product.

Q. State whether the following statements are true of false:

Statement 1: Plants help to purify air by taking in carbon dioxide.
Statement 2: Carbon dioxide is used in photosynthesis during daytime.

Q. Which of the following statements about sodium chloride is incorrect?

a)it has a high melting point

b)it conducts electricity at room temperature

c) it is soluble in water

d) it is brittle

Select the correct statements from the following

(A) At high light intensities, plants show increase in rate of photosynthesis.

(B) Tropical plants have higher temperature optimum than the plants adapted to temperate climates.

Give reasons for the following :

(a) An excess of carbon dioxide increases the temperature of the earth.

(b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires.

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The following statements about carbon dioxide are true except:

The correct option is C it is a product of photosynthesis in plantsOption (E) is correct. CO2 is a reactant of photosynthesis in plants. It reacts with water in presence of sunlight to form carbohydrate (food for plants) with the release of oxygen.

The correct option is C it is a product of photosynthesis in plants
Option $(E)$ is correct.

$C O_{2}$ is a reactant of photosynthesis in plants. It reacts with water in presence of sunlight to form carbohydrate (food for plants) with the release of oxygen.