Choose the correct statement(s) with regard to composting.
Show Hint
- It produces natural soil amendment and enhances the effectiveness of fertilizer.
- Warm temperature of tropical regions is least suitable for composting.
- Composting is an aerobic thermophilic process.
- Windrow composting and in-vessel composting are two of the common composting methods.
The Correct Option is A, C, D
Solution and Explanation
Step 1: Composting and soil amendment.
Compost enriches soil organic matter, improves soil texture, increases water holding capacity, and enhances the efficiency of chemical fertilizers.
\[
(A) \; \text{Correct}
\]
Step 2: Effect of warm climate.
Warm tropical climate actually accelerates microbial activity, making composting more effective. Hence, the statement that it is least suitable is false.
\[
(B) \; \text{Incorrect}
\]
Step 3: Composting process.
Composting is essentially an aerobic, thermophilic process, where microorganisms decompose organic matter at elevated temperatures (45–70°C).
\[
(C) \; \text{Correct}
\]
Step 4: Methods of composting.
Two common methods:
- Windrow composting: Organic waste placed in long rows and turned regularly.
- In-vessel composting: Waste decomposed inside enclosed units under controlled conditions.
\[
(D) \; \text{Correct}
\]
Step 5: Conclusion.
Correct statements = (A), (C), (D).
Final Answer: \[ \boxed{\text{(A), (C), and (D)}} \]
Top GATE AR Services and Infrastructure Questions
- A wastewater pipe connecting two inspection chambers (IC) is laid at a slope of 1:200. The Invert Level of the starting IC is -450 mm. The Invert level of the second pit at a distance of 40 m from the first IC is
- The total head or total lift against which a pump works includes suction lift, discharge lift and
- The two components for measuring time of concentration for storm water are:
Match the various types of impurities present in water in Group I with the appropriate water treatment process given in Group II.
\[\begin{array}{|c|c|} \hline \textbf{Group I} & \textbf{Group II} \\ \hline \text{P: Fine suspended matter} & \text{1: Aeration} \\ \hline \text{Q: Pathogenic bacteria} & \text{2: Plain sedimentation} \\ \hline \text{R: Color, odour and taste} & \text{3: Sedimentation with coagulation} \\ \hline \text{S: Floating matter as leaves} & \text{4: Screening} \\ \hline & \text{5: Disinfection} \\ \hline \end{array}\]- Choose the correct options with respect to cycle track design as per Indian Road Congress guidelines.
Top GATE AR Solid waste management: Methods Questions
- As per the Solid Waste Management Rules 2016, which among the following are 'Duties of waste generators'?
- A town with 0.45 million population sends its entire organic waste to a composting site on a daily basis through a truck of 15 ton carrying capacity. Assume total waste generated per capita per day is 0.21 kg and 40% of the total waste is organic waste. The minimum number of weekly round trips required by the truck (in integer) will be \(\underline{\hspace{1cm}}\).
- A municipal town requires a volume of 70,000 \(m^3\) compacted solid waste to fill a low lying land. The city has a total of 10,000 households.
Type of House Percentage of Households Equivalent volume of compacted solid waste generated/ household/ day LIG 30% 0.10 \(m^3\) MIG 60% 0.15 \(m^3\) HIG 10% 0.20 \(m^3\)
Using the information as shown in the Table above, the estimated minimum number of days required to fill the low lying land is _______ (in integer). - As per Solid Waste Management Rules 2016 (Ministry of Environment, Forest and Climate, Govt. of India) select the correct statement(s).
Top GATE AR Questions
- After playing ________________ hours of tennis, I am feeling ________________ tired to walk back.
- The average of the monthly salaries of M, N and S is ₹4000. The average of the monthly salaries of N, S and P is ₹5000. The monthly salary of P is ₹6000.
What is the monthly salary of M as a percentage of the monthly salary of P?
- A person travelled 80 km in 6 hours. If the person travelled the first part with a uniform speed of 10 kmph and the remaining part with a uniform speed of 18 kmph. What percentage of the total distance is travelled at a uniform speed of 10 kmph?
- Four girls P, Q, R, and S are studying languages in a University. P is learning French and Dutch. Q is learning Chinese and Japanese. R is learning Spanish and French. S is learning Dutch and Japanese. Given that: French is easier than Dutch; Chinese is harder than Japanese; Dutch is easier than Japanese, and Spanish is easier than French. Based on the above information, which girl is learning the most difficult pair of languages?
- A block with a trapezoidal cross-section is placed over a block with a rectangular cross-section as shown above.
Which one of the following is the correct drawing of the view of the 3D object as viewed in the direction indicated by the arrow in the above figure?
