Q2571. Golden Rice is a genetically modified crop engineered to produce high levels of:
RAS Prelims MCQ Practice
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.
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Q2572. The architectural form known as ‘Chhatri’ (cenotaph) prevalent in Rajasthan is a structural synthesis of:
Explanation
The ‘Chhatri’ is a quintessential feature of Rajasthani funerary architecture, serving as a memorial for royals and nobles. Structurally, it represents a synthesis of traditional Rajput open pavilion designs, characterized by pillars and lintels, and the rounded domes introduced by Mughal architecture. These cenotaphs are often intricately carved and placed on elevated platforms, creating a striking silhouette in the desert landscape.
Q2573. The toxic protein produced by Bacillus thuringiensis does not kill the bacterium itself because:
Explanation
Bacillus thuringiensis does not suffer from its own toxin because the protein is synthesized and stored as an inactive, crystalline protoxin. The toxin only becomes active and lethal when it is ingested by a susceptible insect and exposed to the specific alkaline environment of the insects midgut. This natural safety mechanism ensures that the bacterium can produce the protein without causing self-destruction.
Q2574. Consider the following statements regarding the decline of major Rajput dynasties:
I. The rigid clan structure prevented the formation of a unified Rajput empire.
II. Continuous warfare severely drained the economic resources of the states.
III. Internal successions disputes were frequently exploited by external powers.
IV. Strategic reliance on forts proved ineffective against Mughal artillery.
Which of the above statement(s) is/are correct?
I. The rigid clan structure prevented the formation of a unified Rajput empire.
II. Continuous warfare severely drained the economic resources of the states.
III. Internal successions disputes were frequently exploited by external powers.
IV. Strategic reliance on forts proved ineffective against Mughal artillery.
Which of the above statement(s) is/are correct?
Explanation
Several factors contributed to the decline of Rajput political power. Their rigid clan-based structure made it nearly impossible to form a unified, lasting empire. Constant internal warfare drained their economic resources, while frequent succession disputes allowed external powers like the Mughals to intervene. Finally, their traditional reliance on hilltop forts became a strategic disadvantage when faced with the modern artillery of the Mughal army.
Q2575. Which of the following is an environmental concern associated with the cultivation of Genetically Modified (GM) crops?
Explanation
A significant environmental concern regarding GM crops is the possibility of gene flow, where pollen from the modified crop fertilizes related wild plants or weeds. If the transgene is transferred, it could create superweeds that are difficult to control. This potential for unintended ecological consequences requires careful monitoring and regulation of the release and cultivation of genetically modified organisms in the environment.
Q2576. Which Rajput clan claims their descent from Lakshmana, the brother of Lord Rama?
Explanation
The Gurjara-Pratihara dynasty claimed descent from Lakshmana, the brother of Lord Rama. According to their inscriptions, Lakshmana served as the ‘door-keeper’ or ‘Pratihara’ for his brother, and the clan adopted this name to signify their role as the protectors of the land. This legendary origin provided them with a high status in the traditional social hierarchy and linked them to the Solar race.
Q2577. Identify the incorrect statement regarding transgenic animals.
Explanation
Transgenic animals are specifically designed and extensively used for chemical and drug safety testing. They can be engineered to be more sensitive to toxic substances, allowing for faster and more accurate results than traditional animal models. Other statements are correct: they are used for vaccine safety, studying human diseases like Alzheimers, and the first transgenic cow, Rosie, produced human protein-enriched milk.
Q2578. Match List I with List II and select the correct answer using the codes given below:
| Rajput Dynasties | Ancient Capitals |
|---|---|
| A. Guhilas | i. Shakambhari |
| B. Chauhans | ii. Nagda |
| C. Rathores | iii. Dausa |
| D. Kachwahas | iv. Mandore |
Explanation
The ancient capitals of the major Rajput dynasties highlight their early centers of power. The Guhilas initially established themselves at Nagda. The Chauhans were associated with Shakambhari, from where they later moved to Ajmer. The Rathores first rose to prominence at Mandore before founding Jodhpur. The Kachwahas began their rule in the Dhundhar region, with Dausa serving as one of their earliest administrative seats.
Q2579. The term biofortification in agriculture refers to:
Explanation
Biofortification is the process of increasing the nutritional quality of food crops through agronomic practices, conventional plant breeding, or modern biotechnology. Unlike traditional fortification, which adds nutrients during food processing, biofortification aims to make the plants themselves richer in essential vitamins and minerals while they are growing, providing a sustainable way to improve public health in nutrient-deficient populations worldwide.
Q2580. The inscription which describes the Chauhans as "Vatsa Gotra Brahmins" is:
Explanation
The Bijolia rock inscription of 1170 CE is a vital historical source for the Chahamana dynasty. It specifically describes the Chauhans as "Vatsa Gotra Brahmins," suggesting a priestly origin that later transitioned into a martial one. This inscription also lists the genealogy of the dynasty and mentions numerous ancient place names, providing essential data for reconstructing the early political geography of medieval Rajasthan.Answer key for these questions
| Q | Correct answer |
|---|---|
| 2571 | (b) Beta-carotene |
| 2572 | (c) Rajput pavilion architecture and Mughal domes |
| 2573 | (c) The toxin exists as an inactive protoxin crystal inside the bacterium. |
| 2574 | (b) I, II, III and IV |
| 2575 | (b) The potential for gene flow to wild relatives, creating superweeds |
| 2576 | (d) Gurjara-Pratiharas |
| 2577 | (d) Transgenic animals cannot be used for chemical safety testing. |
| 2578 | (a) A-ii, B-i, C-iv, D-iii |
| 2579 | (a) Breeding crops to increase their nutritional value. |
| 2580 | (c) Bijolia Inscription |
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.