MCQ
upsc-p1-environment-renewable-energy MCQ - Practice Questions with Answers
Solve 4 upsc-p1-environment-renewable-energy questions for RAS/RPSC preparation.
Practice questions
Q1Arrange the following stages in the operation of a pumped-storage system in the correct order: 1. Water is released from the upper reservoir 2. Electricity is used to pump water upward 3. Released water generates electricity 4. Water is held in the upper reservoir until required Select the correct answer using the code below.
Option C gives the correct operating sequence. Electricity first pumps water to the upper reservoir, where it is stored until needed. The water is then released and drives generation. This sequence also shows why pumped storage is an energy-storage system rather than a primary energy source.
Q2With reference to solar-energy systems, consider the following statements: 1. Solar photovoltaic cells convert light directly into electricity. 2. Concentrated solar power uses mirrors to produce heat that can drive a turbine or provide process heat. 3. Daytime solar capacity cannot replace firm capacity one-for-one unless balancing arrangements handle demand at other times. Which of the statements given above are correct? Select the correct answer using the code below.
All three statements are correct. Photovoltaic and solar-thermal systems use different conversion routes: the former converts light directly to electricity, while concentrated solar uses heat. Because solar output is concentrated in daylight hours, storage, demand response, other flexible generation or grid interconnections are needed to serve demand outside those hours.
Q3With reference to storage and renewable-grid integration, consider the following statements: 1. Pumped storage is a primary energy source whose climate value is independent of the electricity used for pumping. 2. Battery storage is modular but depends on critical minerals. 3. Inadequate demand, transmission or grid stability can lead to curtailment of available renewable generation. Which of the statements given above are correct? Select the correct answer using the code below.
Statements 2 and 3 are correct. Batteries are modular but mineral-dependent, and renewable output may be curtailed when the system cannot absorb it. Statement 1 is incorrect because pumped storage stores energy rather than supplying a primary source, and its climate value depends on the electricity used to pump water uphill.
Q4Match List I with List II and select the correct answer using the code below. List I (Energy route) 1. Solar photovoltaic 2. Small hydropower 3. Bioenergy 4. Green hydrogen List II (Conversion mechanism) P. Organic matter is converted to heat, gas or liquid fuel Q. Renewable electricity splits water R. Light is converted directly into electricity S. Flowing water drives a turbine
Option A gives all four correct matches. Solar photovoltaic converts light directly to electricity; flowing water drives a small-hydro turbine; bioenergy converts organic matter into heat, gas or liquid fuel; and green hydrogen is produced when renewable electricity splits water.
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