Health, Environment and Agriculture: RAS Prelims MCQs
662 RAS Prelims practice MCQs on health, environment and agriculture are on this page, in 4 chapters. They cover human health, food, nutrition and public health programmes, environmental and ecological changes and impact assessment, biodiversity and conservation of natural resources, and agriculture, horticulture, forestry and animal husbandry in Rajasthan. Each question has an answer and an explanation.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 201–210 of 662 questions
Browse Health, Environment and Agriculture chapters
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q201. Regarding the potential for natural biodegradation of plastics, consider the following: A. PET (Polyethylene Terephthalate) B. PHA (Polyhydroxyalkanoate) C. Glass D. PLA (Polylactic Acid) Which of the following represents the correct sequence in increasing order of biodegradation potential?
Explanation
Materials vary significantly in how quickly they break down in the environment. Natural minerals used in construction are extremely durable and show almost no biological decay. Common synthetic polymers also persist for centuries. In contrast, some newer plastics made from plant-based sources or produced by bacteria are designed to decompose more rapidly under certain conditions, making them a more sustainable option for specific applications.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q202. Primary microplastics are:
Explanation
Some microscopic plastic particles are intentionally produced for specific commercial uses. These include small beads used in personal care products like exfoliating scrubs or the tiny pellets that serve as raw materials for manufacturing larger items.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q203. Which of the following international agreements governs the transboundary movement of hazardous wastes, explicitly including certain plastic wastes?
Explanation
An international treaty was established to control the transboundary movement of hazardous materials and ensure their environmentally sound management. The agreement has recently been updated to include more specific regulations on the trade of plastic waste. This helps prevent developed nations from shipping their non-recyclable plastic trash to developing countries that may lack the infrastructure to handle it safely, thereby reducing global pollution.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q204. The ‘Great Pacific Garbage Patch’ is primarily an accumulation of:
Explanation
A massive area in the northern Pacific Ocean is known for the high concentration of floating debris brought together by rotating ocean currents. This accumulation consists almost entirely of various types of plastics, ranging from large discarded fishing gear to microscopic fragments. This environmental disaster poses a serious threat to marine life through ingestion and entanglement, highlighting the scale of the global plastic crisis.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q205. Why is plastic pollution considered a severe threat to marine life?
Explanation
Plastic pollution is particularly dangerous to ocean animals because they often cannot distinguish between floating trash and their natural prey. When creatures consume these synthetic materials, it can cause internal injuries, block their digestive systems, and lead to starvation. Additionally, the chemicals within the plastic can leach into the animals’ tissues, causing long-term health problems and disrupting reproductive success across many different species.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q206. The term "single-use plastics" refers to:
Explanation
Many modern convenience items are designed to be used only once before they are thrown away or recycled. These products, such as straws, bags, and food packaging, are typically made from durable synthetic polymers that do not decompose in the environment. Because they are used for such a short time but last for centuries, they contribute disproportionately to the growing global waste problem.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q207. In India, the manufacture, import, stocking, distribution, sale and use of identified single-use plastic items were banned from which date?
Explanation
To combat the rising tide of environmental pollution, the Indian government implemented a significant nationwide ban on the production and use of numerous disposable plastic items. This regulation took effect in the middle of twenty twenty-two. By targeting products with high littering potential and low utility, the policy aims to reduce the environmental footprint of non-biodegradable waste and encourage more sustainable alternatives.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q208. Regarding Extended Producer Responsibility (EPR) in plastic waste management, consider the following statements: I. EPR shifts the responsibility of waste management physically and financially to the producer. II. EPR encourages manufacturers to design environmentally friendly products. III. It does not apply to brand owners and importers. IV. It aims to increase recycling rates. V. It was mandated in India under the Plastic Waste Management Rules, 2016. Which of the above statement(s) is/are correct?
Explanation
A policy approach to waste management requires those who produce or import products to be responsible for their entire lifecycle, including disposal and recycling. This system shifts the financial and logistical burden from the public sector to the manufacturers. By holding companies accountable, it encourages the design of more eco-friendly packaging and promotes higher recycling rates, ultimately reducing the volume of waste.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q209. Nurdles, a significant source of plastic pollution on beaches, are:
Explanation
Tiny, pre-production plastic pellets are the fundamental building blocks for nearly all plastic goods. During shipping and manufacturing, these small granules are often spilled, eventually finding their way into rivers and oceans. Because they are small and buoyant, they wash up on beaches worldwide. These pellets are easily mistaken for food by birds and fish, making them a significant source of marine pollution.
RAS PrelimsHealth, Environment and Agriculture · Environmental and Ecological Changes and Impact Assessment
Q210. Match List I with List II regarding climate change concepts:
Climate Concept
Description
A. Mitigation
i. Process of capturing and storing atmospheric CO 2
B. Adaptation
ii. Adjusting to actual or expected future climate effects
C. Climate Finance
iii. Reducing the flow of heat-trapping greenhouse gases
D. Carbon Sequestration
iv. Local, national or transnational funding to support climate actions
Explanation
Addressing global warming involves several different strategies.
Answer key for these questions
Q
Correct answer
201
(a) C, A, D, B
202
(c) Manufactured at microscopic sizes for products
203
(a) Basel Convention
204
(d) Marine debris and plastics
205
(b) Animals mistake plastics for food items
206
(c) Items used once before disposal
207
(b) 1st July 2022
208
(a) I, II, IV and V
209
(b) Plastic pellets used in manufacturing
210
(a) A-iii, B-ii, C-iv, D-i
Key facts from Health, Environment and Agriculture
The RPSC General Science syllabus includes human health and nutrition, environmental change, biodiversity and the agriculture of Rajasthan.
Health questions pair a deficiency or a programme with its cause or target, for example iron with anaemia.
Environment questions cover ecosystems, pollutants, laws and treaties, including carbon markets.
Rajasthan agriculture questions deal with dryland farming, crops of the arid zones and the State’s agro-climatic zones.
Science and technology, policies and defence are on the Science and Technology page.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Health, Environment and Agriculture?
This page has 662 practice MCQs on Health, Environment and Agriculture. Each has the correct answer, and most have an explanation.
Which chapters does this set cover?
Four chapters: human health, food, nutrition and public health programmes; environmental and ecological changes and their impact assessment; biodiversity, conservation of natural resources and sustainable development; and agriculture, horticulture, forestry and animal husbandry in Rajasthan.
Are health, environment and agriculture part of the RAS Prelims syllabus?
Yes. The General Knowledge and General Science paper includes human health, nutrition, environment, biodiversity and the agriculture sector of Rajasthan, so these topics can be asked every year.
How can I revise this part of the syllabus?
Make short lists of deficiency diseases, pollutants, laws and treaties, and Rajasthan crops and zones. Attempt each chapter, read the explanations of the misses and revisit the lists after a few days.
