National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 8

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Class : Class 8
c

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

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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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Class : Class 6
WHAT IS um

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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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Class : Class 8
Answer is (D); the conversion of nitrates in soil to free nitrogen is performed by bacterial species such as Pseudomonas under anaerobic conditions.

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Class : Class 5
B

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 5

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Class : Class 6
b

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Class : Class 5

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Subject :NSO    Class : Class 5

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