Which of the followings is mainly produced by the activity of anaerobic bacteria on sewage?
Marsh gas
Laughing gas
Propane
Mustard gas
Additional Questions
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Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct? |
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Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition? |
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The biological control of agricultural pests, unlike chemical control is |
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Which one of the following is used as biological insecticide? |
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Yeast is used in the production of |
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Which of the following microbes is used for commercial production of ethanol? |
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Crop rotation is used by farmers to increase |
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During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undergraded? |
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In paddy fields biological nitrogen fixation is chiefly brought by |
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Study the followings related to uses of plants and identify the correct match for the sorghum and cotton respectively. I. Blood purification and organic fertilizer. II. Animal feed and paper industry III. B Vitamin and cosmetics. IV. Explosives and organic fertilizer. The correct pair is: |
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