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Photosynthesis

Out of the fo...

Question

Out of the following, pick the gases used by plants - nitrogen, oxygen, carbon dioxide, sulphur dioxide, nitric oxide.
Also mention the use. [2 MARKS]

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Solution

Correct Answer : 1 Mark
Use : 1 Mark

Oxygen and carbon dioxide.
Plants use carbon dioxide for photosynthesis and oxygen for respiration.

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Similar questions

Q. Name one use of the following gases: Nitrogen, Oxygen, Carbon dioxide.

Pick the odd one out. Give reason for the same. [1 MARK]
nitrogen, oxygen, carbon dioxide.

Q. Question 14

Which of the following gases can be used for storage of fresh sample of an oil for a long time?

a) Carbon dioxide or oxygen
(b) Nitrogen or oxygen
(c) Carbon dioxide or helium
(d) Helium or nitrogen

Q. Given below are word equations. Convert them into chemical equations using symbols and valencies. Balance the equations. Use appropriate signs for gases and precipitates in the reaction.
i) Zinc Sulphide

+

\to

Zinc oxide solid

+

Sulphur dioxide gas
ii) Silver nitrate solution

+

Sodium chloride solution

\to

Silver chloride precipitate

+

Sodium nitrate solution
iii) Sulphur solid

+

Concentrated nitric acid

\to

+

Nitrogen dioxide gas

+

Water
iv) Barium chloride Solution

+

Potassium sulphate Solution

\to

Barium sulphate Precipitate

+

Potassium chloride solution
v) Silver nitrate on heating

\to

+

nitrogen dioxide gas

+

Oxygen gas.
vi) Aluminium hydroxide

+

\to

Aluminium nitrate

+

Q. Which of the following gases combines with the blood and prevents it from carrying oxygen?
(a) carbon monoxide
(b) carbon dioxide
(c) nitrogen oxide
(d) nitrogen trioxide

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