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Name any two special chemicals which are...

Name any two special chemicals which are used as food preservatives.

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LAKHMIR SINGH & MANJIT KAUR-MICRO - ORGANISMS : FRIEND AND FOE.-EXERCISE
  1. Name some of the preservatives which are used in the preservation of f...

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  2. Name two food materials which can be preserved by using oil or vinegar...

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  3. Name any two special chemicals which are used as food preservatives.

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  4. Name the microorganisms which can fix atmospheric nitrogen in the soil...

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  5. What type of plants can fix nitrogen gas of the air into compounds of ...

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  6. Name the micro - organisms present in the soil and in the root nodules...

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  7. Name two leguminous plants which can fix nitrogen.

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  8. Fill in the blanks with suitable words : a) Alcohol is produced with...

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  9. Fill in the blanks: Blue green algae fix directly from air to enhan...

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  10. Fill in the blanks with suitable words : c) Micro - organisms can be...

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  11. Fill in the blanks with suitable words : d) Cholera is caused by ………

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  12. Fill in the blanks with suitable words : e) Common salt has been use...

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  13. Fill in the blanks with suitable words : f) The food material which ...

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  14. Fill in the blanks with suitable words : g) As a result of nitrogen ...

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  15. How do viruses differ from other micro - organisms such as bacteria ?

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  16. What are micro - organisms ? Give any two examples of micro organisms.

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  17. Can microorganisms be seen with the naked eyes? If not, how can they b...

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  18. How do houseflies carry disease - causing microbes ( or pathogens) ?

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  19. State any two ways of preventing diseases spread by houseflies.

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  20. How do mosquitoes carry disease - causing micro - organisms and sprea...

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