Subject :NSO Class : Class 7
Subject :NSO Class : Class 8
Ans 1:
Class : Class 8
Coal Tar is a mixture of 200 substances and is also used in manufacturing of various materials like paints, perfumes and photographic materials. The correct answer should be (B).
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 8
Identify processes X and Y from the given statements and select the option that correctly identifies the microorganisms involved in them respectively.
X : Conversion of complex organic compounds into ammonia
Y : Conversion of nitrates in soil to free nitrogen
| X | Y | |
|---|---|---|
| A | Aspergillus | Bacillus |
| B | Micrococcus | Thiobacillus |
| C | Pseudomonas | Nitrocystis |
| D | Bacillus | Pseudomonas |
D
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 1
