The type of bacteria which is active in trickling filter during biological
treatment of sewage is the __________ bacteria.
(A) Anaerobic
(B) Saprophytic
(C) Aerobic
(D) Parasitic

1 Answer

Answer :

(C) Aerobic

Related questions

Description : The sewage treatment in septic tanks is due to A. Anaerobic decomposition B. Aerobic decomposition C. Parasitic decomposition D. None of these

Last Answer : ANS: A

Description : Fine grit present in sewage is removed in the __________ during sewage treatment. (A) Grit chamber (B) Detritus tank (C) Trickling filter (D) Skimming tank

Last Answer : (B) Detritus tank

Description : The sewage treatment units in which anaerobic decomposition of organic matter is used, are called A. Imhoff tanks B. Trickling filters C. Sludge sedimentation tanks D. None of these

Last Answer : ANS: B

Description : The domestic sewage in large cities (a) has a high BOD as it contains both aerobic and anaerobic bacteria (b) is processed by aerobic and then anaerobic bacteria in the secondary treatment in ... sewage contains adequate oxygen (d) has very high amount of suspended solids and dissolved salts.

Last Answer : (b) is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)

Description : Rhizobium is a kind of – (1) Photosynthetic bacteria (2) Symbiotic bacteria (3) Parasitic bacteria (4) Saprophytic bacteria

Last Answer : (2) Symbiotic bacteria Explanation: Rhizobia are soil bacteria that fix nitrogen after becoming established inside root nodules of legumes. They are the only nitrogenfixing bacteria living in a symbiotic relationship with legumes. Common crop and forage legumes are peas, beans, clover, and soy.

Description : Nitrogen fixing bacteria found in the root nodules of leguminous plant is:- (1) Saprophytic (2) Parasitic (3) Symbiotic (4) Autotrophic

Last Answer : (3) Symbiotic Explanation: Many legumes have root nodules that provide a home for symbiotic nitrogenfixing bacteria called rhizobia. This relationship is particularly common in nitrogen-limited conditions. .

Description : Rhizobium is a kind of (1) Photosynthetic bacteria (2) Symbiotic bacteria (3) Parasitic bacteria (4) Saprophytic bacteria

Last Answer :  Symbiotic bacteria

Description : The filter over which sewage is sprinkled is called as – (1) Trickling filter (2) Percolating filter (3) Contact bed (4) Intermittent sand filter

Last Answer : (1) Trickling filter Explanation: A trickling filter, also known as percolating filter, is an artificial bed of stone or broken brick material over which waste water or sewage is allowed to sprinkle or to trickle. It is then collected through the under drainage system.

Description : The filter over which sewage is sprinkled is called as (1) Trickling filter (2) Percolating filter (3) Contact bed (4) Intermittent sand filter

Last Answer : Trickling filter

Description : In a trickling filter A. Filtration process is used B. Biological action is used C. Neither A. nor B. D. Both A. and B.

Last Answer : ANS: B

Description : The treatment of the following patient should include: a. Initial empiric therapy directed against both aerobes and anaerobes b. The addition of anti-fungal therapy in an elderly patient ... therapy is appropriate if the agents selected possess activity against both aerobic and anaerobic bacteria

Last Answer : Answer: a, e The primary treatment for a perforated viscus is surgical, however antimicrobial therapy is an extremely important adjunct. Empiric antibiotic therapy for secondary ... whereas longer periods are indicated for immunosuppressed patients and with patients with extensive contamination

Description : For treating the sewage of a large city, you will recommend A. A sedimentation tank and an activated sludge treatment plant B. A plant consisting of Imhoff tanks with low rate trickling filters C. Sedimentation tanks with high rate trickling filters D. None of these

Last Answer : ANS: A

Description : Presence of __________ bacteria in water causes disease like typhoid. (A) Aerobic (B) Pathogenic (C) Anaerobic (D) Non-pathogenic

Last Answer : (B) Pathogenic

Description : During waste water treatment, trickling filter is used for :

Last Answer : During waste water treatment, trickling filter is used for : A. Primary treatements B. ... C. Secondary anaerobic treatement D. Tertiary treatement

Description : Select the correct statement from the following. (a) Biogas is produced by the activity of aerobic bacteria on animal waste. (b) Methanobacterium is an aerobic bacterium found in rumen of ... sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Last Answer : (d) Activated sludge-sediment in settlement tanks of sewage treatment plant is a rich source of aerobic bacteria.

Description : Define (i) saprophytic nutrition (ii) parasitic nutrition, and (iii) holozoic nutrition. Give one example of each type. -Science

Last Answer : Saprophytic nutrition: It is that nutrition in which an organism obtains its food from dead organic matter of dead plants, dead animals and rotten bread. Example: Fungi and many bacteria obtain ... absorbed into the body cells of the organism.Example: Human beings obtain food by holozoic nutrition

Description : Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is (A) H2 (B) CH4 (C) CO2 (D) N2

Last Answer : (B) CH4

Description : Trickling filter comes under A- primary treatment B- secondary treatment C- tertiary treatment D- none of these

Last Answer : secondary treatment

Description : Aerobic biological oxidation ponds used for the purification of polluted water (A) Destroys/removes pathogen from the sewage (B) Is not very effective for non-biodegradable substances (e.g. ABS) containing effluents (C) ... much more effectively if the sewage is chlorinated (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Description : Name one organism each having saprophytic, parasitic and holozoic modes of nutrition. -Science

Last Answer : Saprophytic – Fungi.Parasitic – Plasmodium.Holozoic – Human Beings.

Description : Fungi are always (a) Autotrophic (b) Heterotrophic (c) Parasitic (d) Saprophytic

Last Answer : Ans:(b)

Description : Lichens are well known combination of an alga and a fungus where fungus has (a) a saprophytic relationship with the alga (b) an epiphytic relationship with the alga (c) a parasitic relationship with alga (d) a symbiotic relationship with alga.

Last Answer : (d) a symbiotic relationship with alga.

Description : The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known A. Bio-Chemical Oxygen Demand (B.O.D.) B. Dissolved Oxygen (D.O.) C. Chemical Oxygen Demand (C.O.D.) D. None of these

Last Answer : ANS: B

Description : In septic tanks, decomposition of organic bacteria, is done by A. Anaerobic bacteria B. Aerobic bacteria C. Both types of bacterias D. None of these

Last Answer : ANS: A

Description : Pick up the correct statement from the following: A. Anaerobic bacteria flourish in the absence of oxygen B. Aerobic bacteria flourish in the presence of oxygen C. Facultative bacteria flourish with or without oxygen D. All the above

Last Answer : ANS: D

Description : What is the difference between aerobic and anaerobic bacteria?

Last Answer : Bacteria which need oxygen of respiration are called aerobic bacteria. The anaerobic bacteria do not need oxygen for reparation. Oxygen may rather be injurious of r them. 

Description : _____ bacteria live as individuals and do not live in biofilms. a. Planktonic b. Anaerobic c. Aerobic d. Facultative anaerobic

Last Answer : a. Planktonic

Description : The bacterias which require free oxygen for their survival, are called  (A) Aerobic bacterias  (B) Anaerobic bacterias  (C) Facultative bacteria  (D) None of these 

Last Answer : (A) Aerobic bacterias 

Description : Bacteria or molds that require atmospheric oxygen are ____. a. anaerobic c. mesophilic b. aerobic d. thermophilic

Last Answer : b. aerobic

Description : The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by (A) Biological oxygen pond (B) Aerated lagoons (C) Trickling filters (D) Gravity separator having oil skimming devices

Last Answer : (D) Gravity separator having oil skimming devices

Description : Which of the following is mainly produced by the activity of anaerobic bacteria on sewage?

Last Answer : Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? A. Marsh gas B. Laughing gas C. Propane D. Mustard gas

Description : Which of the following is mainly produced by the activity of anaerobic bacteria on sewage? (a) Laughing gas (b) Propane (c) Mustard gas (d) Marsh gas

Last Answer : (d) Marsh gas

Description : Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in (A) Coagulation and flocculation of colloids (B) Oxidation of carbonaceous matter to CO2 (C) ... to the nitrite and eventually to the nitrate (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Description : Biological oxidation ponds remove organic matters present in the polluted water by (A) Using the activities of bacteria and other micro organisms (B) Aerobic oxidation (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Description : Septic tanks are used for the __________ of the deposited solids. (A) Separation (B) Anaerobic decomposition (C) Aerobic decomposition (D) None of these

Last Answer : (B) Anaerobic decomposition

Description : Production of alcohol by fermentation of molasses is a/an __________ process. (A) Anaerobic (B) Aerobic (C) Endothermic (D) Both (B) and (C)

Last Answer : (B) Aerobic

Description : Penicillin is made employing __________ fermentation process. (A) Continuous (B) Aerobic batch (C) Anaerobic batch (D) None of these

Last Answer : (B) Aerobic batch

Description : Which of the following is put into anaerobic sludge digester for further sewage treatment? (a) Primary sludge (b) Floating debris (c) Effluents of primary treatment (d) Activated sludge

Last Answer : (d) Activated sludge

Description : In trickling filter, B.O.D. is reduced to A. 30 to 40% B. 40 to 60% C. 60 to 80% D. 80 to 90%

Last Answer : ANS: C

Description : Aerobic activity is maximum A. In freshly produced sewage B. At sewer pipes C. In sewer treatment plants D. None of these

Last Answer : ANS: A

Description : Use of chlorine in the treatment of sewage (A) Helps in grease separation (B) Increases the biological oxygen demand (BOD) (C) Causes bulking of activated sludge (D) Aids in flocculation

Last Answer : (A) Helps in grease separation

Description : The temperature affects the A. Biological activity of bacteria in sewage B. Solubility of gases in sewage C. Viscosity of sewage D. All the above

Last Answer : ANS: D

Description : If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually ... is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

Last Answer : Answer: a, c Identification of a necrotizing, soft tissue infection mandates immediate operative intervention with aggressive resection of all involved tissues and empiric ... remains without controlled trials demonstrating any additional benefits derived from hyperbaric oxygen therapy

Description : Tinidazole differs from metronidazole in that: A. It is not active against anaerobic bacteria B. It has a broader spectrum of activity C. It has a longer elimination half life D. It has better oral absorption

Last Answer : C. It has a longer elimination half life

Description : In addition to fungi, amphotericin B is active against the following pathogen: A. Anaerobic bacteria B. Giardia C. Leishmania D. Rickettsiae

Last Answer : C. Leishmania

Description : Secondary sewage treatment is mainly a (a) physical process (b) mechanical process (c) chemical process (d) biological process.

Last Answer : (d) biological process.

Description : Cefotaxime has the following properties except (a) It is highly active against aerobic gram negative bacteria (b) It is the most active cephalosporin against Pseudomonas aeruginosa (c) It produces an active metabolite (d) It has achieved high cure rates in serious hospital acquired infections

Last Answer : Ans: B

Description : Cefotaxime has the following properties except: A. It is highly active against aerobic gram negative bacteria B. It is the most active cephalosporin against Pseudomonas aeruginosa C. It produces an active metabolite D. It has achieved high cure rates in serious hospital acquired infections

Last Answer : B. It is the most active cephalosporin against Pseudomonas aeruginosa

Description : Fermentation is a type of ______ process. (1) Aerobic Respiration (2) Anaerobic Respiration (3) Exothermic Reaction (4) Transpiration

Last Answer : (2) Anaerobic Respiration Explanation: Fermentation in food processing is the process of converting carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—under anaerobic conditions. It also occurs in oxygenstarved muscle cells, as in the case of lactic acid fermentation.