CBSE Class 12 Microbes in Human Welfare Multiple Choice Questions with Answers. MCQ Questions Class 12 Microbes in Human Welfare with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Microbes in Human Welfare with Answers to know their preparation level.
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MCQ Questions Class 12 Microbes in Human Welfare with Answers - Set - 1
Question 1:
Which one of the micro-organism is used for production of citric acid in industries?
(a) Lactobacillus bulgaricus
(b) Penicillum citrinum
(c) Aspergillus niger
(d) Rhizopus nigricans
Correct Answer – (C)
Question 2:
Which one of the following is used in industrial preparation of ethanol?
(ia) Lactobacillus
(b) Azotobacter
(c) Penicillium
(d) Saccharomyces
Correct Answer – (D)
Question 3:
Integrated Pest Management (IPM) stands for
(a) Chemical control
(b) Biological control
(c) Host plant resistance
(d) Inegration of the above
Correct Answer – (D)
Question 4:
Correct Answer – (D)
Question 5:
Bacillus thuringiensis (Bt) strains have been used for designing novel
(a) Biofertilizers
(b) Bio-metallurgical techniques
(c) Bio-mineralization processes
(d) Bio-insecticidal plants
Correct Answer – (D)
MCQ Questions Class 12 Microbes in Human Welfare With Answers
Question 6:
Yeast is an important source of
(a) Vitamin-C
(b) Ribioflavin
(c) Sugars
(d) Proteins
Correct Answer – (B)
Question 7:
The micro-organism grown on molasses and sold as food flavouring substance is:
(a) Saccharomyces
(b) Rhizopus
(c) Acetobacter
(d) Lactobacillus
Correct Answer – (A)
Question 8:
The first antibiotic was discovered by
(a) Louis Pasteur
(b) R. Koch
(c) W.FIeming
(d) A. Fleming
Correct Answer – (A)
Question 9:
First biochemical to be produced commercially by microbial cloning and genetic engineering.
(a) Human insulin
(b) Penicillin
(c) Pollen culture
(d) Fertility factor
Correct Answer – (A)
Question 10:
Which of the following is a correct statement
(a) “Bt” in “Bt-cotton” indicates that it is a genetically modified organism produced through biotechnology.
(b) Somatic hybridization involves fusion of two complete plant cells carrying desired genes.
(c) The anticoagulant hirudin is being produced from transgenic Brassica napue seed.
(d) “Flavr savr” variety of tomato has enhanced the production of ethylene which improves its taste.
Correct Answer – (C)
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