9,654 RAS Prelims practice MCQs with the correct answer and a clear explanation for each. Filter by subject and chapter.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 4851–4860 of 9654 questions
Browse by subject
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4851. Consider the following statements regarding the ecological role of desert vegetation (Khejri, Rohida, Phog): I. They have extensive and deep root systems to tap underground moisture. II. They play a critical role in stabilizing sand dunes. III. Their leaf structures are broad and soft to maximize transpiration. IV. They provide critical habitat and sustenance for desert fauna like the Chinkara. Which of the above statement(s) is/are correct?
Explanation
Desert plants like Khejri and Rohida have evolved deep roots to access groundwater and play a vital role in stabilizing sand dunes. They also provide essential habitats for local wildlife such as the Chinkara. However, their leaves are usually small or thorny to minimize water loss, not broad and soft. Therefore, the statements regarding roots, dune stabilization, and habitat are correct.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4852. Phog (Calligonum polygonoides) is a critical desert shrub primarily known for its efficiency in:
Explanation
Phog is a quintessential desert shrub that plays a critical role in the Thar ecosystem. Its extensive, sand-binding roots are highly effective in stabilizing shifting sand dunes and preventing wind erosion. The shrub also provides essential fuelwood for desert dwellers and nutritious fodder for camels. Although it does not produce commercial timber, its ecological value makes it a botanical cornerstone.
RAS PrelimsRajasthan History, Art and Culture · Peasant, Tribal and Praja Mandal Movements
Q4853. What was the critical effect of linking the Praja Mandal objectives with the ideology of the Indian National Congress?
Explanation
Linking the Praja Mandals with the ideology of the Indian National Congress turned local struggles into a cohesive nationalist movement for a democratic India.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4854. Arrange the following root adaptations of desert ecosystem plants (like Khejri) in sequence from structural adaptation to ecological consequence: A. Minimal competition with shallow-rooted surface crops (like Bajra) B. Successful intercropping and sustained agroforestry C. Deep taproot system reaching deep phreatic zones D. Extraction of groundwater during severe surface droughts Which of the following represents the correct sequence?
Explanation
The Khejri tree’s survival strategy starts with its deep taproot system that reaches far into the phreatic zones. This allows the tree to extract groundwater even during severe surface droughts. Because its roots go so deep, there is minimal competition for moisture with shallow-rooted agricultural crops like Bajra. This unique adaptation enables successful intercropping and the practice of agroforestry.
RAS PrelimsRajasthan History, Art and Culture · Peasant, Tribal and Praja Mandal Movements
Q4855. The folk song ‘Panchida’, which became an anthem for mass awakening and instilled patriotic fervor among the peasants during the Bijolia movement, was composed and sung by:
Explanation
The folk song Panchida, which stirred the peasants during the Bijolia movement, was composed and sung by Manikya Lal Verma.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4856. Which grass species, endemic to the Thar Desert (specifically Jaisalmer), is highly nutritious for livestock and plays a key role in preventing soil erosion?
Explanation
Sewan grass is a highly nutritious perennial grass endemic to the Thar Desert, particularly the Jaisalmer region. It is exceptionally well-adapted to sandy soils and low rainfall. Sewan provides excellent pasture for livestock and plays a vital role in preventing soil erosion by binding the loose desert sand. Conserving Sewan grasslands is essential for maintaining the regional ecological balance.
RAS PrelimsRajasthan History, Art and Culture · Peasant, Tribal and Praja Mandal Movements
Q4857. Read the following statements regarding the ideological evolution of the Praja Mandal movements and select the correct option: Statement I: In their initial phase, Praja Mandals primarily demanded constitutional reforms and responsible government under the aegis of the traditional rulers. Statement II: By the mid-1940s, influenced by the national Quit India Movement, their demands evolved into a total rejection of monarchical rule and full integration into independent India.
Explanation
Early Praja Mandals asked for constitutional reform and responsible government under the rulers, so Statement I is correct. By the mid-1940s, under the influence of the Quit India Movement, they moved to reject monarchy and demand integration with India, so Statement II is correct.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4858. A major environmental threat to the survival of the Khejri tree in recent years has been identified as:
Explanation
In recent years, the survival of the Khejri tree has been threatened by biological factors rather than climatic ones. Widespread infestations by root borers and various parasitic fungi have been identified as major causes of tree mortality across many districts. These pests weaken the trees, making them susceptible to stress. Research and conservation efforts are focused on managing these biological threats.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4859. Identify the odd one out among the flora of the desert ecosystem.
Explanation
Khejri, Rohida, and Ker are all characteristic species of the arid desert ecosystem found in Rajasthan, adapted to high temperatures and limited water. Mangroves, however, are trees that grow in coastal saline or brackish water and are not found in the landlocked desert state of Rajasthan. Therefore, Mangrove is the odd one out in this list of regional flora.
RAS PrelimsHealth, Environment and Agriculture · Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
Q4860. The historic Khejarli movement in Rajasthan, a precursor to modern community forest management, was led by:
Explanation
The historic Khejarli movement was led by Amrita Devi Bishnoi in 1730 to protect Khejri trees from being cut by the king’s men. She and three hundred and sixty-three others sacrificed their lives to defend the trees, reflecting a deep-rooted commitment to environmental conservation. This movement is a legendary precursor to modern community-led forest management. Amrita Devi is iconic.
Answer key for these questions
Q
Correct answer
4851
(b) I, II, and IV
4852
(d) Sand dune stabilization and fuel/fodder
4853
(c) Transformed local struggles into a cohesive nationalist movement for a democratic India.
4854
(a) C, D, A, B
4855
(b) Manikya Lal Verma
4856
(b) Sewan grass
4857
(a) Both Statement I and Statement II are correct
4858
(d) Infestation by root borers and parasitic fungi.
4859
(a) Mangrove
4860
(a) Amrita Devi Bishnoi
Frequently asked questions
How many RAS Prelims practice MCQs are there on RAS Prelims?
This page has 9654 practice MCQs on the RAS Prelims syllabus. Each has the correct answer, and most have an explanation.
How should I practise MCQs for RAS Prelims?
Attempt each question first, then open the answer and read the explanation. Practise one chapter at a time, note the facts you got wrong and revise them. Repeat the chapter after a few days.
Are these actual RAS Prelims past-paper questions?
No. These are practice questions written for the RAS Prelims syllabus. They follow the pattern the exam uses: factual questions, statement-based questions, match-the-list and assertion-reason.
