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प्रश्न
Statement given below is incorrect. Write the correct statement :
Symbiotic bacteria are present in nodules of cereal plants such as wheat.
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उत्तर
Symbiotic bacteria are present in nodules of pod bearing plants such as peas, grams, etc.
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संबंधित प्रश्न
Name three noble gases present in the air. State their one industrial use
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Fill in the blanks
Oxygen is used in ___________the food to get _______.
Match the statements in List 1 with the correct answers in List 2
| List 1 | List 2 | ||
| 1 | An impurity in air | A | Water vapour |
| 2 | The component of air which supports combustion | B | Respiration |
| 3 | The inert component in the air slightly soluble in water | C | Rare gases |
| 4 | The component of air which minimizes the rate of evaporation | D | Sulphur dioxide |
| 5 | The process which involves oxidation of food substance in living organisms | E | Helium |
| 6 | The component of air which finds application in observation balloons | F | Carbon dioxide |
| 7 | The process which involves oxidation of substances, liberating heat and light energy | G | Combustion |
| 8 | The component of air which is heavier than air and fairly soluble in water | H | Nitrogen |
| 9 | The process by which atmospheric carbon dioxide is absorbed by plants resulting in the formation of carbohydrates | I | Photosynthesis |
| 10 | The component of air which is lighter than air and less than 1% in air | J | Oxygen |
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
How do the roots of land plants get oxygen for breathing?
Aerated water contains
“Air is not an elementary substance, but a composition”. Why?
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Nitrogen
