Question:
Which one of the following pairs is not correctly matched
Which one of the following pairs is not correctly matched
Updated On: Apr 28, 2026
Serratia – Drug addiction
Spirulina – Single cell protein
Rhizobium – Biofertilizer
Streptomyces – Antibiotic
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The Correct Option is A
Solution and Explanation
Serratia is a genus of bacteria, and it is not associated with drug addiction.
The other pairs are correctly matched:
(B) Spirulina is known for its use as a source of single-cell protein.
(C) Rhizobium is commonly used as a biofertilizer because it forms a symbiotic relationship with leguminous plants and helps fix nitrogen from the atmosphere.
(D) Streptomyces is a well-known genus of bacteria that produces antibiotics.
So, the correct option is (A): Serratia – Drug addiction
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal