Question

Fill up the blanks by selecting the correct option (i) Biogas is a mixture of gases which predominantly contains________ and is used a s ________ (ii) Methanogens are commonly found in the_______during sewage treatment (iii) _______ species are free-living fungi and effective biocontrol agents of several plant pathogens

• A. (i) methane, fuel, (ii) anaerobic sludge, (iii) Trichoderma
• B. (i) $CO_{2}$, fuel, (ii) primary sludge, (iii) Trichoderma
• C. (i) methane, fuel, (ii) anaerobic sludge (iii) Baculoviruses
• D. (i) methane, fuel, (ii) aerobic sludge, (iii) Trichoderma

Answer 1

Answer: (A)

(i) methane, fuel, (ii) anaerobic sludge, (iii) Trichoderma

Answer 2

Answer (a) (i) methane, fuel, (ii) anaerobic sludge, (iii) Trichoderma