Q651. What constitutes the largest recurring cost in running a commercial poultry farm in Rajasthan?
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 651–660 of 662 questions
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Q652. Match the items in List I with those in List II and select the correct answer using the codes given below:
| Important Water Body | District/Significance for Fisheries |
|---|---|
| A. Jaisamand Lake | i. Tonk (Major reservoir for commercial inland fisheries) |
| B. Ramgarh Dam | ii. Udaipur (Second largest artificial lake, significant tribal fishery) |
| C. Bisalpur Dam | iii. Jaipur (Historic fishing, currently largely dry/seasonal) |
| D. Mahi Bajaj Sagar Dam | iv. Banswara (Large reservoir supporting substantial fish production) |
Explanation
Rajasthan’s diverse water bodies are critical for the inland fisheries sector. Jaisamand Lake in Udaipur is a major site for tribal fisheries. Ramgarh Dam in Jaipur is a historic site, though currently seasonal. Bisalpur Dam in Tonk and Mahi Bajaj Sagar in Banswara are among the state’s largest reservoirs, providing significant potential for commercial fish production through local fishing communities.
Q653. Fisheries in Rajasthan are entirely restricted to:
Explanation
Since Rajasthan is a landlocked state with no coastline, its fisheries sector is entirely restricted to inland freshwater resources. This includes various rivers, canals, seasonal lakes, and large man-made reservoirs. The state has significant potential for fish production through the scientific management of these freshwater bodies. Inland fisheries play a vital role in providing nutritional security and livelihood opportunities to rural populations.
Q654. Which group of fishes constitutes the majority of the commercial catch from Rajasthan’s water bodies?
Explanation
The commercial fish catch in Rajasthan is dominated by the ‘Major Indian Carps’, namely Rohu, Catla, and Mrigal.
Q655. The ‘National Scheme of Welfare of Fishermen’ in Rajasthan primarily provides support for:
Explanation
The National Scheme of Welfare of Fishermen aims to improve the living conditions of the fishing community in Rajasthan. Key components include providing financial assistance for building low-cost houses and accidental insurance cover. Additionally, a relief fund is established to support fishermen during the closed monsoon season when fishing is prohibited. These welfare measures are essential for social and economic security.
Q656. Consider the following statements about fisheries in Rajasthan:
I. The southern and southeastern districts (Udaipur, Banswara, Dungarpur, Bhilwara) have the highest potential for reservoir fisheries.
II. Fish seed production is a major constraint; hence, hatcheries have been established.
III. Mahseer, a famous sport fish, is found in the freshwaters of southern Rajasthan.
IV. Ornamental fish farming is slowly gaining popularity as an entrepreneurial activity.
V. Fishing operations in large reservoirs are completely unregulated and open to anyone without permits.
Which of the above statement(s) is/are correct?
I. The southern and southeastern districts (Udaipur, Banswara, Dungarpur, Bhilwara) have the highest potential for reservoir fisheries.
II. Fish seed production is a major constraint; hence, hatcheries have been established.
III. Mahseer, a famous sport fish, is found in the freshwaters of southern Rajasthan.
IV. Ornamental fish farming is slowly gaining popularity as an entrepreneurial activity.
V. Fishing operations in large reservoirs are completely unregulated and open to anyone without permits.
Which of the above statement(s) is/are correct?
Explanation
Rajasthan’s fisheries have high potential in southern reservoirs, though seed production remains a challenge addressed through hatcheries. The state is home to the famous Mahseer fish, and ornamental farming is gaining popularity. However, fishing in large reservoirs is strictly regulated through a licensing and leasing system, making the fifth statement incorrect. Thus, the first four statements are correct.
Q657. Which fast-growing, exotic fish species was introduced for aquaculture but has caused ecological concerns by competing with indigenous carps in Rajasthan’s water bodies?
Explanation
The introduction of certain exotic fish species like Tilapia and African Catfish has raised ecological concerns in Rajasthan’s water bodies. These species are highly aggressive and prolific breeders, often out-competing indigenous carps for food and habitat. Their presence can lead to a decline in native fish biodiversity and disrupt the traditional fishing economy. Efforts are made to promote native species aquaculture.
Q658. The practice of rearing two or more compatible species of fish together in the same pond to fully utilize all ecological niches is called:
Explanation
Composite fish culture is a modern aquaculture practice where several different species of fish are reared together in a single pond. The species are chosen based on their non-competitive feeding habits; for example, Catla feeds at the surface, Rohu in the middle, and Mrigal at the bottom. This approach ensures that all ecological niches and available nutrients are fully utilized.
Q659. Which modern aquaculture technology is being promoted in Rajasthan to maximize fish production in existing reservoirs by rearing fish in enclosed mesh structures?
Explanation
Cage culture is an advanced aquaculture technology being promoted in Rajasthan to increase fish productivity in large reservoirs. In this system, fish are reared in enclosed mesh cages suspended in the water body. This allows for intensive feeding and monitoring while utilizing the existing water resources. Cage culture is particularly useful for achieving high yields in areas where traditional construction is impossible.
Q660. Saline water aquaculture in Rajasthan, particularly the farming of Whiteleg shrimp (Litopenaeus vannamei), has been successfully experimented in the inland saline groundwater tracts of which district?
Explanation
Inland saline water aquaculture has seen a breakthrough in the Churu district of Rajasthan. Despite being in the desert, the region has vast tracts of saline groundwater. Experiments in farming Whiteleg shrimp have been remarkably successful here. This innovative approach turns a geographical constraint into an economic opportunity, providing a high-value export product from an arid landscape for local farmers.Answer key for these questions
| Q | Correct answer |
|---|---|
| 651 | (c) Poultry feed costs |
| 652 | (c) A-ii, B-iii, C-i, D-iv |
| 653 | (b) Inland freshwater fisheries |
| 654 | (d) Rohu, Catla, and Mrigal |
| 655 | (a) Housing, insurance, and relief during the closed season. |
| 656 | (a) I, II, III, and IV |
| 657 | (a) Tilapia and African Catfish |
| 658 | (d) Composite Fish Culture |
| 659 | (c) Cage culture |
| 660 | (d) Churu |
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.