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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.
| 751. |
Cochineal insect has been used in checking the wild growth ofA. OpuntiaB. EichhorinaC. AphidsD. Screw worm |
| Answer» Correct Answer - A | |
| 752. |
Besides dung ,the weed that can be used in biogas production isA. HydrillaB. Solanum nigrumC. Eichhornia crassipesD. Parthenium hysterophorus |
| Answer» Correct Answer - 3 | |
| 753. |
The conversion of cortexolone to prednisolone involves:A. hydroxylationB. dehydrogentationC. hydroxylation , dehydrogenationD. dehydrogenation , hydroxylation |
| Answer» Correct Answer - C | |
| 754. |
Match the following list of bacteria and their commercially important products. `{:("Bacterium","Product"),((i)"Aspergillus niger",(A)"Lactic acid"),((ii)"Acetobacter aceti",(B)"Butyric acid"),((iii)"Clostridium butylicum",(C)"Acetic acid"),((iv)"Lactobacillus",(D)"Citric acid"):}` Choose the correct match.A. `i-(B),ii-(C),iii-(D),iv-(A)`B. `i-(B),ii-(D),iii-(C),iv-(A)`C. `i-(D),ii-(C),iii-(B),iv-(A)`D. `i-(D),ii-(A),iii-(C),-iv-(B)` |
| Answer» Correct Answer - C | |
| 755. |
Match the microbes in column I with their commercial /industrial products in columnII and choose the correct answer A. A-3,B-4,C-1,D-5,E-2B. A-4,B-5,C-2,D-1,E-3C. A-5,B-4,C-1,D-2,E-3D. A-3,B-4,C-5,D-1,E-2 |
| Answer» Correct Answer - A | |
| 756. |
Substance with core structure made up of one 5-carbon and three 6-carbon rings are:A. SteroidsB. AlcoholsC. Neutral fatsD. Organic acids |
| Answer» Correct Answer - A | |
| 757. |
Match the following list of bacteria and their commercially important products. `{:("Bacterium","Product"),((i)"Aspergillus niger",(A)"Lactic acid"),((ii)"Acetobacter aceti",(B)"Butyric acid"),((iii)"Clostridium butylicum",(C)"Acetic acid"),((iv)"Lactobacillus",(D)"Citric acid"):}` Choose the correct match.A. i-d,ii-c,iii-b,iv-aB. i-b,ii-c,iii-d,iv-aC. i-b,ii-d,iii-c,iv-aD. i-d,ii-a,iii-c,iv-b |
| Answer» Correct Answer - A | |
| 758. |
Aspergillus niger is used for for commerical and industrial production of :A. Citric acidB. Lactic acidC. Acetic acidD. butyric acid |
| Answer» Correct Answer - A | |
| 759. |
Farmers have reported 50% higher yields of rice by using the biorthliserA. MycorrhizaB. Azolla pinnataC. CyanobacteriaD. legume-Rhizobium symbiosis |
| Answer» Correct Answer - B | |
| 760. |
Floc is _______.A. a mesh-like structure formed by the association of bacteria and fungal filaments in sewage treatmentB. the effluent in primary treatment tank obtained during sewage treatmentC. the primary sludge produced in sewage treatmentD. a type of biofortified food |
| Answer» Correct Answer - A | |
| 761. |
Bacillus thuringiensis (Bt) strains have been used for designing novel:A. bio-fertilizersB. bio-insecticidal plantsC. bio-mineralization processD. bio-metallurigical techniques |
| Answer» Correct Answer - B | |
| 762. |
Suppression of reproduction of one type of organism by utilising some features of its biology or physiology to destroy it or by use of another organism is known asA. competitionB. predationC. biological controlD. physiological control |
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Answer» Correct Answer - C Biological control is the suppression of reproduction of one type of organism by utilising some features of its biology or physiology to destroy it or by use of another organism. |
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| 763. |
Microorganism used for commercial production of aceti acid isA. AcetobacterB. Aspergillus nigerC. Clostridium butylicumD. Saccharomyces cerevisiae |
| Answer» Correct Answer - A | |
| 764. |
Microorganism used for commercial production of aceti acid isA. Saccharomyces cerevisiaeB. AcetobacterC. Aspergillus nigerD. Clostridium butylicum |
| Answer» Correct Answer - B | |
| 765. |
The vitamin whos content increases following the conversion of milk into curd by lactic acid bacteria isA. Vitamin-CB. vitamin-DC. vitamin-`B_(12)`D. vitamin-E |
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Answer» Correct Answer - C Microorganisms such as Lactobacillus and others commonly called Lactic Acid Bacteria (LAB) grow it milk and convert into curd. During growth, the LAB produce acids that coagulate and partially digest the milk proteins. A small amount of curd added to the fresh milk as inoculum or starter contain millions of LAB, which at suitable temperature multiply, thus, converting milk to curd which also improves its nutritional quality by increasing vitamin-`B_(12)`. Note In our stomach, the LAB play other options are not related with LAB bacteria beneficial role in checking disease causing microbes. |
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| 766. |
Wastewater treatment generates a large quantity of sludge, which can be treated byA. anaerobic digestersB. flocC. chemicalsD. oxidation pond |
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Answer» Correct Answer - A The sediment of settling tank is called activated sludge. A part of it is used as inoculum in aeration tanks. The remaining is passed into a large tank called anaerobic sludge digesters. |
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| 767. |
The vitamin whos content increases following the conversion of milk into curd by lactic acid bacteria isA. vitamin `C`B. vitamin `D`C. vitamin `B_(12)`D. vitamin `E` |
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Answer» Correct Answer - C Curd is more nutritious than milk as it contains a number of organic acids and vitamins including `B_(12)`. |
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| 768. |
Microbe used for biocontrol of pest bufferfly caterpillars isA. Saccharomyces cerevuisiaeB. Bacillus thuringiensisC. Streptococcus spD. Trichoderma sp |
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Answer» Correct Answer - B Biopesticides are those biological agents that are used for control of weeds, insects and pathogens. The microorganisms used as biopesticides are viruses, bacteria, protozoa, fungi and mites. Some of the biopesticides are being used at a commercial scale. most important example is the soil bacterium, Bacillus thuringiensis (Bt). Spores of this bacterium produce the insecticidal cry protein. Therefore, spores of this bacterium kill larvae of insects which eat them. |
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| 769. |
A microbial biocontrol agent that can be used to control butterfly caterpillars isA. Trichoderma polysporumB. Bacillus thuringiensisC. StreptococcusD. mycorrhiza |
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Answer» Correct Answer - B An example of microbial biocontrol agent that can be introduced in order to control butterfly caterpillars is the bacteria Bacillus thuringiensis (Bt). These are available in sachets as dried spores which are mixed with water and sprayed onto vulnerable plants such as Brassica and fruit trees, where these are eaten by the insect larvea. In the gut of the larve, the toxin is released and the larvea get killed. The bacterial disease will kill the caterpillars, but leave other insects unharmed. |
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| 770. |
When a natural predator (living organism) is applied on the other pathogen organisms to control them, this process is called asA. biological controlB. genetic engineeringC. arifificial controlD. confusion technique |
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Answer» Correct Answer - A Indiscriminate eradication of pests is undesirable because without them the beneficial predatory and parasitic organisms which depend upon them for food would also be eliminated. The biocontrol method of pest and pathogen control involves use of viruses, bacteria and other insects (with are their natural predators and pests). |
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| 771. |
Dragonflies are used to get rid ofA. mosquitoesB. aphidsC. butterfly caterpillarsD. both (a) and (b) |
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Answer» Correct Answer - A Dragonflies are used to get rid of mosquitoes. |
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| 772. |
Find the odd one w.r.t. distilled alcoholic beveragesA. RumB. BeerC. BrandyD. Whisky |
| Answer» Correct Answer - B | |
| 773. |
Most famous symbiotic nitrogen fixing bacte-rium/biofertilizer isA. NitrobacterB. NitrosomonasC. NtrosococcusD. Rhizobium |
| Answer» Correct Answer - 4 | |
| 774. |
Curd, milk, cheese and butter are produced with the help of:A. YeastB. PenicilliumC. StreptococcusD. None of the above |
| Answer» Correct Answer - C | |
| 775. |
Sausages are fermentedA. VegetablesB. MeatsC. MilkD. Sauce |
| Answer» Correct Answer - B | |
| 776. |
Vinegar is prepared from fermented sugar solution by the activities ofA. LactobacillusB. AcetobacterC. AzotobacterD. Rhizobium |
| Answer» Correct Answer - B | |
| 777. |
Which one of the following is used in the production of alcohol ?A. Saccharomyces cerevisiaeB. Torulopsis utilisC. Clostridium botulinumD. Leuconostoc citrovorum |
| Answer» Correct Answer - A | |
| 778. |
Which one of the following is not uded in the production of yoghurtA. Streptococcus lactisB. Stretococcus thermophilusC. Lactobacillus bulgaricusD. Acetobacter aceti |
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Answer» Correct Answer - D Acetobacter aceti is used in the production of acetic acid. |
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| 779. |
Which one of the following is not uded in the production of yoghurtA. Streptococcus lactisB. Streptococcus thermophilusC. Lactobacillus bulgaricusD. Acetobacter aceti. |
| Answer» Correct Answer - D | |
| 780. |
Which one of the following is not uded in the production of yoghurtA. Acetobacter acetiB. Streptococcus lactisC. Lactobacillus bulgaricusD. Streptococcus thermophilus |
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Answer» Correct Answer - A Yoghurt is a semi-liquid food made from fermented milk. |
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| 781. |
Which one of the following is not used in the production of yoghurtA. S. thermophilusB. Lactobacillus bulgaricusC. Acetobactor acetiD. Streptococcus lactis |
| Answer» Correct Answer - C | |
| 782. |
Which one of the following is not uded in the production of yoghurtA. Streptococcus lactisB. Strepcococcus thermophilusC. Lactobacillus bulgaricusD. Aceteobacillus aceti |
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Answer» Correct Answer - D Because Acteobacter aceti is used in the production of vinegar. |
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| 783. |
Which one of the following is not used in the production of yoghurtA. Acetobacter acetiB. Streptococcus thermophilusC. Streptococcus lactisD. Lactobacillus bulgaricus |
| Answer» Correct Answer - 2 | |
| 784. |
Pasteurization makes foodstuffs free from:A. all living organismsB. vegetative forms of milk borne patho- gensC. all vegetative forms of bacteriaD. all bacteria |
| Answer» Correct Answer - 2 | |
| 785. |
Fermented beverage with maximum alcohol content isA. BeerB. BrandyC. WhiskyD. Gin |
| Answer» Correct Answer - 2 | |
| 786. |
The fruit jucis turms bitter in taste if they are kept in open place for sometime, because ofA. Bacteria of the atomsphere react with the juiceB. Fermentation of the juice by yeastC. Some internal factorsD. All the above three statements are correct |
| Answer» Correct Answer - B | |
| 787. |
The fruit jucis turms bitter in taste if they are kept in open place for sometime, because ofA. bacteroa of the atmosphere react with the jucieB. fermentation of the juice by yeastC. some internal factorsD. all of the above |
| Answer» Correct Answer - B | |
| 788. |
The technology of biogas production from cow dung was developed in india largely due to the efforts ofA. Gas Authority of IndiaB. Oil and Natural Gas CommissionC. Indian Agrocultural Research Institue, Khadi and Village Industries CommissionD. India Oil Corporation |
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Answer» Correct Answer - C Cattle dung is used for the production of biogas. Commonly called gobar gas. The technology of biogas production from cowdung was developed in India mainly due to the efforts of India Agriculutral Research Institue (IARI) and Khadi and Village Industries Commission (KVIC). Other options (a), (b) and (d) did not play any role is this. |
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| 789. |
The technology of biogas production from cow dung was developed in india largely due to the efforts ofA. Gas Autority of IndiaB. Oil and Natural Gas CommissionC. India Agricultural Research Institute and Khadi & Village Industries CommissionD. India Oil Corporation |
| Answer» Correct Answer - C | |
| 790. |
Assertion : Extraction and purification of enzymes is laborius and expensive. Reason : Protein engineering can be used to produce enzymes at large scale.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explananation of the assertionC. If the assertion is true but the reasons is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - B Although thousands of proteins have been characterized in prokaruotes and eukaryotes, only few become commercially imortant. This is due to the high cost of isolating and purifying enzymes in sufficuient quantities. Through recombinant DNA techonology, a protein can be obtined in aboundant quantity the objectieves of protein engineering are to create superior objective of protien engineering are to high value specfice chiemincal and to produce enzymes produce enzymes for large sacel sue. |
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| 791. |
Dough kept overnight in warm weather becoms soft and spongy because ofA. CohesionB. OsmosisC. Absorption of carbon dioxide from atmosphereD. Fermentation |
| Answer» Correct Answer - D | |
| 792. |
Which one of the following pairs is wrongly matchedA. Califorms - VinegarB. Methanogens - Gobar gasC. Yeast - EthanolD. Streptomycetes - Antibiotic |
| Answer» Correct Answer - 1 | |
| 793. |
Mach column I with column II and select the correct answer from the given codes. `{:(ColumnI, Column II),(A."Methanogens",(i)BOD),(B."Fermentors",(ii)"Methane rich fuel gas"),(C."Organic waste in water",(iii)"Production of methane"),(D."Biogas",(iv)"Large vessels for growing microbes"):}`A. `A-(ii),B-(iv),C-(iii),D-(i)`B. `A-(iv),B-(iii),C-(ii),D-(i)`C. `A-(ii),B-(i),C-(iv),D-(iii)`D. `A-(iii),B-(iv),C-(i),D-(ii)` |
| Answer» Correct Answer - D | |
| 794. |
Methanogens do not produceA. oxygenB. methaneC. hydrogen sulphideD. carbon dioxide |
| Answer» Correct Answer - A | |
| 795. |
Methanogens convertA. Methyl alcohol into methaneB. Formic acid into methaneC. Acetic acid into methaneD. All the above |
| Answer» Correct Answer - D | |
| 796. |
Primary sludge is used forA. Preparation of compostB. Preparation of manureC. Biogas productionD. All the above |
| Answer» Correct Answer - D | |
| 797. |
Primary treatment of sewage isA. physical processB. biogas productionC. All of theseD. |
| Answer» Correct Answer - A | |
| 798. |
The solids which settel after primary treatment of sewage are calledA. Primary sludgeB. Activated sludgeC. FlocsD. Total solids |
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Answer» Correct Answer - A All solids that settle down foms the primary sludge the supenatant forms the effluent. The effluent form the primary settling tank is taken for sewage treatement. |
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| 799. |
Primary treatment of sewage isA. Physical processB. Biological processC. Chemical processD. Biochemical process |
| Answer» Correct Answer - A | |
| 800. |
Rising of dough is due isA. MethaneB. Carbon dioxideC. Hydrogen sulphideD. Ammonia |
| Answer» Correct Answer - B | |