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Earn 100

What are xenobiotics?

Important Questions on Biochemistry

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Cetyl trimethyl ammonium chloride is an example of

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Which one of the following is not a surfactant?
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Streptomycin is effective in the treatment of
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Which of the following practices will not come under green chemistry?
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Which of the following is non-ionic detergent?
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The organisms susceptible to the inhibitory effect of an antibiotic are known as its ______.
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Green chemistry means such reactions which
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Which was the first efficient drug for the treatment of syphilis?
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Which of the following statements is incorrect with respect to green chemistry?
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Which of the following is a synthetic detergent?
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 Which of the following practices will not come under green chemistry?
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The following table summarises the differences between biodegradable and non-biodegradable pollutants. Pick out the wrong differences and select the correct answer.

  Biodegradable pollutants Non-Biodegradable pollutants
(i) These are the pollutants which can be easily degraded by microorganisms These are pollutants which cannot be degraded into harmless materials
(ii) These can be used to produce energy (through biogas) compost, manure, etc. These are difficult to manage as a natural method of degradation is absent
(iii) These usually do not enter biogeochemical cycles These become a part of rapid turnover in biogeochemical cycles
(iv) Examples: DDT, BHC, plastics, polyethylene, glass, etc. Examples: Sewage, garbage, animal waste, etc.
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Which of the following detergent acts as a germicide?
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Which of the following are anionic detergents?
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Trichloroacetaldehyde (CCl3CHO) reacts with chlorobenzene in the presence of sulphuric acid and produces
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A drug 'X' is used in the treatment of dysentery and is an alternative to antibiotic. 'X is?

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Nowadays, tetrachloroethene Cl2C=CCl2 solvent has been replaced by liquified CO2 for the dry cleaning purposes. This is because: