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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Penicillin and Curd |
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Answer» The order of arrangement of products according to their decreasing importance is: Penicillin- Biogas − Citric acid − Curd Penicillin is the most important product for the welfare of human society. It is an antibiotic, which is used for controlling various bacterial diseases. The second most important product is biogas. It is an eco-friendly source of energy. The next important product is citric acid, which is used as a food preservative. The least important product is curd, a food item obtained by the action of lactobacillus bacteria on milk Hence, the products in the decreasing order of their importance are as follows: Penicillin- Biogas − Citric acid − Curd |
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| 2. |
Living organisms used to enrich the nutrient quality of the soil are called asA. bicontrol agentsB. biofertillsersC. synthetic fertilisersD. natural ferilisers |
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Answer» Correct Answer - B Biofertilisers are microorganisms which bring about nutrient enrichment of soil by enhancing the avilability of nutrients to crops. Microorganisms which act as biofertilisers are bacteria, cyanobacteria (blue green algae) and mycorrhizal fungi. Bacteria and cyanobacteria have the property of nitrogen fixation while mycorrhizal fungi preferentially withdraw minerals from organic matter for the plant with which they are associated. They maximise ecological benefits and minimise environmental hazards. |
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| 3. |
Biofertilisers areA. some bacteria and cyanobacteriaB. fertilisers formed by ploughing in barseemC. fertilisers obtained by decay of dead organismsD. fertilisers prepared by mixing cattle dung with crop residues. |
| Answer» Correct Answer - A | |
| 4. |
Biofertilisers are prganisms that enrich the nutrient quality of the soil. Which of the following can be used as biofertilisers ?A. Nitrogen fixing cyanobacteriaB. Nitrogen fixing bacteriaC. MycorrhizaeD. All of these |
| Answer» Correct Answer - D | |
| 5. |
Match the following and find the correcy combination A. a-ii, b-iv, c-i, d-iiiB. a-iii, b-i, c-iv, d-iiiC. a-v, b-i, c-iii, d-iiD. a-v, b-iv, c-i, d-ii |
| Answer» Correct Answer - A | |
| 6. |
One of the free-living, anaerobic nitrogen-fixer is Or which of the following is a photoautotrophic bacteriumA. BeijerinckiaB. RhodospirillumC. RhizobiumD. Azotobacter |
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Answer» Correct Answer - B Rhodospirillum is a free-living, anaerobic , nitrogen fixer. Both Beijerinckia and Azotobacter are free-living, nitrogen-fixing , aerobic microbes . Rhizobium is a symbiotic , nitrogen fixer. |
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| 7. |
Variolation consisted ofA. Injecting viriolous matterB. Injecting heat-killed a viriolous matterC. Scratching an area over a vein and pour small matter from a small pox pustuleD. Scratching vein and pouring viriolous matter into blood. |
| Answer» Correct Answer - C | |
| 8. |
The three microbes are listed below. Name the product produced by each one of them and mention their use. (a) Aspergillus niger (b) Trichoderma polysporum (c) Monascus purpureus |
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Answer» (a) Sspergillus niger-Citric acid (b) Trichoderma polysportum-Cyclosporin-A (C) Monascus purpureus-Statins. |
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| 9. |
Make correction wherever you find mistake in spellings/words in the following paragraph/sentences. A. Biofertilisers are a high-cost output but they do not pollute the environment. Acceptability of biofertillisers is also low because they usually produce quick and spectacular results. B. Fungi of mycorrhiza solubilise phosphorus, produce plant growth inhibiting substance and protect host plants from soil nutrients. (C) Biopesticides are those chemical agents that are used for control of weeds. insects and pathogons. |
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Answer» A. Biogertilisers are a low-cost input but they do not pollute the environment Acceptability of biofertillisers is also low because they usually do not produce quick and spectacular results. (B) Fungi of mycorrhiza solubilise phosphorus, produce plant growth promoting substances and protect host plants from soil pathogens. (C) Biopesticides are those biological agents that are used for control of weeds, insects and pathogens. |
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| 10. |
A new strain of bacteria produced by biotechnology in alcohol industry is:A. Escherichia coliB. Pseudomonas putidaC. Bacillus subtilisD. Saccharomyces cerevisiae |
| Answer» Correct Answer - 2 | |
| 11. |
Torulopsis utils isA. a microorganism that yields third gen- eration vaccinesB. a food yeastC. an important intestinal commensalD. employed for the citric acid synthesis |
| Answer» Correct Answer - 2 | |
| 12. |
The antibiotic cephalosporin is obtained from a species of:A. BacteriumB. AlgaC. FungusD. Mycoplasma |
| Answer» Correct Answer - C | |
| 13. |
The antibiotic cephalosporin is obtained from a species of:A. algaeB. bacillusC. fungusD. streptomyces |
| Answer» Correct Answer - 3 | |
| 14. |
Which of the following in sewage treatement removes suspended solids.A. Teritary treatmentB. Secondary treatmentC. Primary treatmentD. Sludge treatment |
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Answer» Correct Answer - C In sewage treatement , suspended solids are removed during primary treatment . It is also known as physical treatment. It consists of shredding , churning, screening and sedimentation . Sequential filtration removes floating and large suspended solids. |
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| 15. |
Which of the following in sewage treatement removes suspended solids.A. Secondary treatmentB. Primary treatmentC. Sludge treatmentD. Tertiary treatment |
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Answer» Correct Answer - B Primary treatment remove suspended solids. |
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| 16. |
Cheese are classified on the basis ofA. FlavourB. ColourC. TextureD. All the above |
| Answer» Correct Answer - D | |
| 17. |
Cheeses are classified on the basis ofA. FlavourB. ColourC. TextureD. All of the above |
| Answer» Correct Answer - A | |
| 18. |
The important antibiotic wonder drug extracted from Penicillium isA. penicillinB. aureomycinC. streptomycinD. terramycin |
| Answer» Correct Answer - A | |
| 19. |
Which of the following is a free living bacteria that ca fix nitrogen in the soil. Spirulina, Azospirillum, Sonalika |
| Answer» Correct Answer - Azospirillum | |
| 20. |
A good producer of citric acid is :A. ClostridiumB. SaccharomycesC. AspergillusD. Pseudomonas |
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Answer» Correct Answer - C A good producer of critc acid is Aspergillus. |
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| 21. |
Read statement ( a - d). How many of them are wrong? Colosstrum is recommended for new born as it is richColosstrum is recommended for new born as it is rich Tissue culture is useful in obtaining virus free plants Beer is obtained by distillation of fermented grape juiceA. FourB. ThreeC. TwoD. One |
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Answer» Correct Answer - B `*` Colostrum is recommended for new born as it is rich in antibodies. `*` Chikungunya is caused by virus. `*` Beer is obtained by distillation of fermented barley. |
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| 22. |
Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein:A. binds with epithelial cells of midgut of the insect pest ultimately killing itB. is cooled by several genes including the gene cryC. is activated by acid pH of the foregut of the insect pest.D. does not kill the carrier bacterium which is it-self resistant to this toxin. |
| Answer» Correct Answer - A | |
| 23. |
(A): Syphilis is a common veneral disease. (R) : Infection may be acquired during sexual intercourse.A. If both (A) and (R) are true and (R) is the correct explanation of (A).B. If both (A) and (R) are true but (R) is not the correct explanation of (A).C. If (A) is true but (R) is false.D. If both (A) and (R) are false. |
| Answer» Correct Answer - A | |
| 24. |
(A) : Trachoma is reported to the leading cause of blindness. (R) : It is an infection of the conjunctive of the eye.A. If both (A) and (R) are true and (R) is the correct explanation of (A).B. If both (A) and (R) are true but (R) is not the correct explanation of (A).C. If (A) is true but (R) is false.D. If both (A) and (R) are false. |
| Answer» Correct Answer - A | |
| 25. |
(A) : Measles is a common chilhood disease caused by a DNA virus. (R) : This disease affects throat and its main symptom is suffocation.A. If both (A) and (R) are true and (R) is the correct explanation of (A).B. If both (A) and (R) are true but (R) is not the correct explanation of (A).C. If (A) is true but (R) is false.D. If both (A) and (R) are false. |
| Answer» Correct Answer - D | |
| 26. |
(A) : Animal husbandry deals with the care and breading of livestock. (R) : It does not include poultry farming and fisheries.A. If both (A) and (R) are true and (R) is the correct explanation of (A).B. If both (A) and (R) are true but (R) is not the correct explanation of (A).C. If (A) is true but (R) is false.D. If both (A) and (R) are false. |
| Answer» Correct Answer - C | |
| 27. |
Which of the following can be controlled by using biopesticides ?A. InsectsB. DiseasesC. WeedsD. All of these |
| Answer» Correct Answer - D | |
| 28. |
Which one of the following plant functions as symbiotic nitrogen-fixing plant?A. AzollaB. CycasC. MossD. Marchantia |
| Answer» Correct Answer - A | |
| 29. |
Plant having nitrogen fixing bacteria isA. CottonB. WheatC. GramD. Mustard |
| Answer» Correct Answer - C | |
| 30. |
Erythromycin and Chloramphenicol are got fromA. Penicillium speciesB. Aspergillus speciesC. Streptomyces speciesD. Bacillus spedes |
| Answer» Correct Answer - 1 | |
| 31. |
The microorgansms responsible for the production of erythromycinA. Streptococcus lactinB. Leuconostoc citrivarumareC. Streptomyces erythreusD. Clostridium sp |
| Answer» Correct Answer - C | |
| 32. |
Which of the following is an example of non-leguminous symbiotic `N_2`-fixing microorganism ?A. AiderB. LentilC. FrankiaD. none of these |
| Answer» Correct Answer - C | |
| 33. |
Mycorrhiza is helpful inA. Synthesis of foodB. Getting nutrients from soilC. Providing resistance against different regulatorsD. Increase the fertility of soil |
| Answer» Correct Answer - B | |
| 34. |
Insecticide pyrethrum is prepared fromA. VetiveriaB. ChrysanthemumC. TephrosiaD. Cymbopogon |
| Answer» Correct Answer - B | |
| 35. |
which one is a neem product used as insect repellent ?A. AzardirachtinB. RotenoneC. ParathioneD. Endrin |
| Answer» Correct Answer - A | |
| 36. |
Which one is a neem product used as insect repellentA. RotenoneB. AzadirachtinC. ParathionD. Endrin |
| Answer» Correct Answer - B | |
| 37. |
An insect repellent neem product isA. RotenoneB. AzadirachtinC. ParathionD. Endrin |
| Answer» Correct Answer - 2 | |
| 38. |
Gobar gas contains mainlyA. `CO_(2)+H_(2)`B. `CO_(2)+H_(2)O`C. `CH_(4)` onlyD. `CH_(4)+CO_(2)` |
| Answer» Correct Answer - 4 | |
| 39. |
A major component of gobar gas isA. AmmoniaB. MethaneC. EthaneD. Butane |
| Answer» Correct Answer - 2 | |
| 40. |
Pasteurised milk remains unspoilt forA. 2-5 daysB. One dayC. One weekD. Two weeks |
| Answer» Correct Answer - A | |
| 41. |
When the milk has been pasteurised successfully, the milk no longer contain the enzymeA. PolymeraseB. PhosphataseC. PeroxidaseD. Pyrimidinase |
| Answer» Correct Answer - B | |
| 42. |
A major component of gobar gas isA. butaneB. ammoniaC. methaneD. ethane |
| Answer» Correct Answer - 1 | |
| 43. |
Curd is prepared from pasteurised milk by the process by curdling. It is initiated by add- ing a starter culture ofA. Lactobacillus bulgariensB. Pseudomonas fluorescenceC. Clostridium butylieumD. Bacterium streptomyces |
| Answer» Correct Answer - 3 | |
| 44. |
The enzyme distase was identified byA. S. A WaksmanB. A. Fleming C. Christain HasenD. Payen adn Persoz |
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Answer» Correct Answer - D Payen and Persoz in 1933 idenfified diastase for the first time. |
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| 45. |
Monascus purpureus is a yeast commerically used in the production ofA. ethonalB. streptokinase for removing clots from the blood vesselsC. citric acidD. blood cholesterol lowering statins |
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Answer» Correct Answer - D Monascus purpureus is a yeast used in the production of statins which are blood chloesterol lowering agents. |
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| 46. |
Terramycin is obtained fromA. Streptomyces venezuelaeB. Streptomyces aureofaciesnC. Streptomyces rimousD. Streptomyces griseus |
| Answer» Correct Answer - C | |
| 47. |
The free-living fungus Trichoderma can be used forA. killing insectsB. biological control of plant diseasesC. controlling butterfly caterpillarsD. producing antibiotics |
| Answer» Correct Answer - B | |
| 48. |
Monascus purpureus is a yeast commerically used in the production ofA. citric acidB. ethanolC. blood cholesterol lowering statinsD. streptokinase for removing clots from blood vessels. |
| Answer» Correct Answer - C | |
| 49. |
Terramycin is obtained from:A. Sterptomyces griseusB. S. venzuelaeC. S. aureofaciensD. S. rimosus |
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Answer» Correct Answer - D `{:(1,"Streptomycin","Streptomyces griseus"),(2,"Tetracycline (Aureomycin)","Streptomyces aureofaciens"),(3,"Neomycin","Streptomyces fradiae"),(4,"Terramycin (Oxytetracycline)","Streptomyces ramousus"),(5,"Chloramphenicol (Chloromycetin)","Streptomyces venezualae"),("6","Erythromycin","Streptomyces erythreus"):}` |
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| 50. |
Match column I with column II and select the correct answer from the gives codes. `{:(Column I,Column II),(A."Trichoderma",(i)"Free living nitrogen fixing bacteria"),(B."Streptomyces",(ii)"Biocontrol agent"),(C."Azospirillum",(iii)"Lactic acid"),(D."Lactobacillus",(iv)"Source of antibiotic"):}`A. `A-(ii),B-(iii),C-(iv),D-(i)`B. `A-(ii),B-(iv),C-(i),D-(iii)`C. `A-(iii),B-(i),C-(ii),D-(iv)`D. `A-(iv),B-(ii),C-(i),D-(iii)` |
| Answer» Correct Answer - B | |