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Free download in PDF Microbes in Human Welfare Multiple Choice Questions (MCQS) with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
(1)
Group of bacteria used in biogas production is
[A]
Methane
[B]
Methanol
[C]
Oxygen
[D]
NO2
(2)
In 1928, a scientist discovered the first effective antibiotic. Scientist and antibiotic are:
[A]
Fleming – Streptomycin
[B]
Fleming – Penicillin
[C]
Waksman – Penicillin
[D]
Waksman – Streptomycin
Answer: Fleming – Penicillin
(3)
Azolla has a symbiotic association with :
[A]
Rhizobium
[B]
Anabaena
[C]
Nostoc
[D]
Azospirillium
(4)
Devine and collego are:
[A]
Bioinsecticides
[B]
Biofungicide
[C]
Bioherbicides
[D]
Rodenticides
(5)
My chorrhiza means
[A]
Symbiosis between fungus and plants
[B]
Symbiosis between plant and bacteria
[C]
Symbiosis between algae and fungus
[D]
Symbiosis between michorrrhiza of fungus of water and bacteria
Answer: Symbiosis between algae and fungus
(6)
Azospirillium and Azotobector for example of.....
[A]
Decomposers
[B]
Free living N2 fixative
[C]
Symbiotic N2 fixative
[D]
Pathogenes
Answer: Free living N2 fixative
(7)
Which pair is odd ?
[A]
Yeast - Ethanol
[B]
Penicillium – Penicillin
[C]
Methenogens - Biogas
[D]
Streptococus - Statins
Answer: Streptococus - Statins
(8)
Which living organism works as bio-fertiliser ?
[A]
Azolla
[B]
Clostridium
[C]
Azetobactor
[D]
Rhizobium
(9)
Which micro organism is useful in production of citric acid ?
[A]
Azetobactor
[B]
Penicillium
[C]
Aspergilus niger
[D]
Clostridium
(10)
By which process cheese and toddy is obtained ?
[A]
Fermentation
[B]
Distillation
[C]
Pasteurisation
[D]
Hydrolysis
(11)
To which BOD is related ?
[A]
Microbes and organic matters
[B]
Organic compound
[C]
Microbes
[D]
None of them
(12)
Which organism is useful to produce Riboflavin ?
[A]
Arabia hossipae
[B]
Saccharhomyces Cervisiae
[C]
(a) & (b) both
[D]
None of them
(13)
Bacillus thuringiensis is useful in....
[A]
Bio fertiliser
[B]
Biometalogical
[C]
Biotoxic plant
[D]
Bio product plant
(14)
Bio fertilizer means
[A]
Crop which shows rapid growth
[B]
Cow dung and agricultural west
[C]
prepared by Anabaena and Nostoc
[D]
None of them
Answer: prepared by Anabaena and Nostoc
(15)
Which is useful to control Nematodes in cereal crops ?
[A]
Bionematocides
[B]
Fungicides
[C]
Weedicides
[D]
Insecticides
(16)
Which sentence is odd ?
[A]
Progesteron is useful as a immuno suppressor
[B]
Statins is useful to reduce cholesterol
[C]
Streptokinase is useful to prevent blood clotting
[D]
Lipase is useful to remove oily stains
Answer: Progesteron is useful as a immuno suppressor
(17)
Which micro organism is involved in flocs as well as in mychorrhiza ?
[A]
Bacteria
[B]
Virus
[C]
Fungus
[D]
Algae
(18)
Which is used to prevent blood clotting in blood vessels ?
[A]
Steroids
[B]
Cyclosporin-A
[C]
Streptokinase
[D]
Statins
(19)
Which is to be used in production of swiss cheese ?
[A]
Monascus purpureus
[B]
Clostridium bacterium
[C]
Lacto Bacillus
[D]
Saccharhomyces cerevisiae
Answer: Clostridium bacterium
(20)
Which option is related with the utility of lectic acid ?
[A]
In fermantation, to prepare pickle
[B]
useful for preparing curd from milk
[C]
To increase the quality of vitamin B12
[D]
All the given
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