Environmental Biotechnology — Part 2 MCQs with Explanations
Practice high-yield Biotechnology Engineering MCQs on Environmental Biotechnology — Part 2 with worked academic solutions for PPSC, FPSC, NIH, NTS.
Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC, FPSC, NIH...
Estimated Time
48 mins
Exam-Level PPSC FPSC NIH NTS
Verified for Commission Syllabus • Oct 14, 2026
40
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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Question 1 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Thermal power generation in India is carried out by burning
Correct Answer: Option B — Coal
Detailed Academic Explanation:
Coal is the correct answer to “Thermal power generation in India is carried out by burning”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Removal of solids materials is generally considered as
Correct Answer: Option A — Primary treatment
Detailed Academic Explanation:
Primary treatment is the correct answer to “Removal of solids materials is generally considered as”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
When industry with red category is to be established, it is necessary to have hearing or inquiry under the procedure called as
Correct Answer: Option A — Environmental health hazard (EHH)
Detailed Academic Explanation:
Environmental health hazard (EHH) is the correct answer to “When industry with red category is to be established, it is necessary to have hearing or inquiry under the procedure called as”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
A measure of the amount of oxygen consumed in the biological process that break down organic matter is known as
Correct Answer: Option B — Biochemical oxygen demand
Detailed Academic Explanation:
Biochemical oxygen demand is the correct answer to “A measure of the amount of oxygen consumed in the biological process that break down organic matter is known as”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
A highly vesicular material derived from acidic laves and produced in very large quantities known as
Correct Answer: Option C — Pumice
Detailed Academic Explanation:
Pumice is the correct answer to “A highly vesicular material derived from acidic laves and produced in very large quantities known as”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Aquatic microorganisms, in general can be grown at pH
Correct Answer: Option A — 6.5 to 8.5
Detailed Academic Explanation:
6.5 to 8.5 is the correct answer to “Aquatic microorganisms, in general can be grown at pH”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option A — Alum aluminium sulphate
Detailed Academic Explanation:
Alum aluminium sulphate is the correct answer to “Sedimentation is enhanced by the addition of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option C — Methanogenesis and gasification
Detailed Academic Explanation:
Methanogenesis and gasification is the correct answer to “Biogas production is the outcome of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
The spatial scale of meso-scale meteorological phenomenon is approximately
Correct Answer: Option C — Few 100 m to few km
Detailed Academic Explanation:
Few 100 m to few km is the correct answer to “The spatial scale of meso-scale meteorological phenomenon is approximately”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Polychlorinated biphenyls (PCBs) which cause environmental exposure risk have these important properties
Correct Answer: Option D — Highly soluble in water and poorly soluble in oils and organic solvents
Detailed Academic Explanation:
Highly soluble in water and poorly soluble in oils and organic solvents is the correct answer to “Polychlorinated biphenyls (PCBs) which cause environmental exposure risk have these important properties”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option A — Dissolved organic matter and particulate organic matter
Detailed Academic Explanation:
Dissolved organic matter and particulate organic matter is the correct answer to “DOM and POM are stands for”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Any particulate matter, gas, or combination thereof other than water vapour is called
Correct Answer: Option B — Air emission
Detailed Academic Explanation:
Air emission is the correct answer to “Any particulate matter, gas, or combination thereof other than water vapour is called”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Oceanic ridges is the correct answer to “Deep-sea ferromanganese nodules are found on”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
In ocean regime carbonate compensation depth (CCD) implies
Correct Answer: Option A — Precipitation of carbonate
Detailed Academic Explanation:
Precipitation of carbonate is the correct answer to “In ocean regime carbonate compensation depth (CCD) implies”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option D — Green algae and ascomycetes
Detailed Academic Explanation:
Green algae and ascomycetes is the correct answer to “Most of the lichens are consists of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Many species of marine bacteria characteristically grow while attached to a solid surface and are called
Correct Answer: Option A — Epibacteria
Detailed Academic Explanation:
Epibacteria is the correct answer to “Many species of marine bacteria characteristically grow while attached to a solid surface and are called”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Mica is the correct answer to “Garnet is a metamorphic product of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Burning of fossil fuels is the main source of pollution
Correct Answer: Option D — Sulphur oxide
Detailed Academic Explanation:
Sulphur oxide is the correct answer to “Burning of fossil fuels is the main source of pollution”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Trophic structure may be shown graphically by ecological pyramids; which of the following ecological pyramid will always have a true upright shape
Correct Answer: Option C — Pyramid of energy
Detailed Academic Explanation:
Pyramid of energy is the correct answer to “Trophic structure may be shown graphically by ecological pyramids; which of the following ecological pyramid will always have a true upright shape”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option B — Non-chemical insecticide
Detailed Academic Explanation:
Non-chemical insecticide is the correct answer to “The diatomaceous earth is used as a”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Average noise level is the correct answer to “The noise index LgO refers to”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option B — Decreases with increasing in pH
Detailed Academic Explanation:
Decreases with increasing in pH is the correct answer to “The solubility of Fe in water”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Jatropha spp. is the correct answer to “Biodiesel is obtained by”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Water contaminated with either domestic or industrial wastes is called
Correct Answer: Option A — Non-potable water
Detailed Academic Explanation:
Non-potable water is the correct answer to “Water contaminated with either domestic or industrial wastes is called”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Bulking of sewage sludge is frequently associated with
Correct Answer: Option B — High C : P ratio
Detailed Academic Explanation:
High C : P ratio is the correct answer to “Bulking of sewage sludge is frequently associated with”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
One of the following is not an In situ conservation for biological resources
Correct Answer: Option D — Breeding under confirmed areas
Detailed Academic Explanation:
Breeding under confirmed areas is the correct answer to “One of the following is not an In situ conservation for biological resources”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
n-alkanes is the correct answer to “OCT plasmid is responsible for degradation of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Mercury is the correct answer to “The planet nearest to the Sun is”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option C — Number of particles of size less than 2.5 μrn
Detailed Academic Explanation:
Number of particles of size less than 2.5 μrn is the correct answer to “PM2.5 refers to”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
A majority of the antibiotics are derived from actinomycetes which come from members of the genus
Correct Answer: Option D — Actinomyces
Detailed Academic Explanation:
Actinomyces is the correct answer to “A majority of the antibiotics are derived from actinomycetes which come from members of the genus”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option D — Cycling of elements through the biotic and abiotic sphere
Detailed Academic Explanation:
Cycling of elements through the biotic and abiotic sphere is the correct answer to “A biogeochemical cycle is the”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Species diversity is generally higher in ecosystem experiencing
Correct Answer: Option D — Drastic disturbance
Detailed Academic Explanation:
Drastic disturbance is the correct answer to “Species diversity is generally higher in ecosystem experiencing”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Photovoltaics (solar cells) work on the principle of
Correct Answer: Option C — Photoelectric effect
Detailed Academic Explanation:
Photoelectric effect is the correct answer to “Photovoltaics (solar cells) work on the principle of”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Which of this remote sensing tool is commonly used for groundwater exploration and soil moisture determination?
Correct Answer: Option D — Black and white aerial photos
Detailed Academic Explanation:
Black and white aerial photos is the correct answer to “Which of this remote sensing tool is commonly used for groundwater exploration and soil moisture determination”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
One of the purpose of secondary treatment of industrial waste water and sewage is to
Correct Answer: Option B — Reduce the BOD
Detailed Academic Explanation:
Reduce the BOD is the correct answer to “One of the purpose of secondary treatment of industrial waste water and sewage is to”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
The disinfection method by chlorine is most commonly used method, the other method/s is/are
Correct Answer: Option C — Both A and B
Detailed Academic Explanation:
Both A and B is the correct answer to “The disinfection method by chlorine is most commonly used method, the other method/s is/are”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Correct Answer: Option D — Decreases its calorific value
Detailed Academic Explanation:
Decreases its calorific value is the correct answer to “The presence of CO 2 in biogas”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Bioremediation of organic wastes is generally based on which of the following?
Correct Answer: Option D — Both A and B
Detailed Academic Explanation:
Both A and B is the correct answer to “Bioremediation of organic wastes is generally based on which of the following”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Root hairs is the correct answer to “Which of the following is for rhizosphere”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
Which of the following is being used to produce "super bioabsorbent", a polysaccharide which is composed of glucose and glucuronic acid?
Correct Answer: Option A — Alcaligenes luteus
Detailed Academic Explanation:
Alcaligenes luteus is the correct answer to “Which of the following is being used to produce "super bioabsorbent", a polysaccharide which is composed of glucose and glucuronic acid”. This question is standard in competitive examination syllabi for Environmental Biotechnology.
💡Examiner's Advisory for Biotechnology Engineering
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.