Q2431. Restriction endonucleases are enzymes that:
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.
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Q2432. During the reign of which Kachwaha ruler did the Jaipur school of painting reach its zenith, blending Mughal and indigenous techniques?
Explanation
The Jaipur school of painting reached its artistic zenith during the reign of Sawai Pratap Singh in the late eighteenth century. He was a great patron of the arts and maintained a large studio of painters. Under his influence, the style became more vibrant, focusing on religious themes like the Radha-Krishna Leela, while successfully integrating Mughal technical finesse with indigenous folk traditions.
Q2433. Which of the following is the most appropriate reason for the phenomenal economic prosperity of the Satavahana empire?
Explanation
The economic prosperity of the Satavahana Empire was greatly bolstered by the expansion of maritime trade with the Roman Empire. This was facilitated by the discovery of the seasonal monsoon winds by the Greek navigator Hippalus, which allowed ships to cross the Arabian Sea more quickly and safely. This breakthrough enabled Indian ports to export luxury items in exchange for Roman gold, lead, and wine.
Q2434. Arrange the following constitutional functionaries in the correct order of the Table of Precedence:
I. Prime Minister
II. President
III. Governors of States within their respective States
IV. Vice President
I. Prime Minister
II. President
III. Governors of States within their respective States
IV. Vice President
Explanation
The Warrant of Precedence defines the hierarchy of various constitutional and government officials. The President holds the first rank as the head of state. The Vice-President ranks second, followed by the Prime Minister in the third position. Governors of states, within their respective jurisdictions, occupy the fourth rank. This order is used for state protocols and ceremonial occasions across the country.
Q2435. If a farmer wants to cultivate cotton successfully, which of the following combinations of environmental conditions should they seek?
Explanation
For successful cotton cultivation, a farmer needs a warm climate with at least two hundred and ten frost-free days. The crop thrives under bright sunshine and requires moderate rainfall or irrigation. Well-drained black clayey soil is ideal because it retains moisture effectively during the growing season. These specific environmental conditions ensure the healthy development of cotton bolls and high-quality natural fiber.
Q2436. Which of the following is an original criterion developed under the Gadgil Formula to designate a State as a Special Category State?
Explanation
The Gadgil Formula identified states needing extra support based on geographical and economic disadvantages. Hilly and difficult terrain was a primary criterion, as it increases the cost of infrastructure and service delivery. Other factors included low population density, strategic international borders, and economic backwardness. States meeting these criteria received preferential treatment in central plan assistance to ensure balanced national development.
Q2437. Match List-I with List-II regarding enzyme functions in biotechnology:
| Enzyme | Function |
|---|---|
| A. Restriction Endonuclease | i. Forms phosphodiester bonds to join DNA fragments |
| B. DNA Ligase | ii. Cleaves DNA at specific palindromic sequences |
| C. DNA Polymerase | iii. Synthesizes complementary DNA from an RNA template |
| D. Reverse Transcriptase | iv. Synthesizes new DNA strands by adding nucleotides |
Explanation
Different enzymes perform specific tasks in biotechnology. Restriction endonucleases cut DNA at palindromic sequences. DNA ligase joins DNA fragments by forming phosphodiester bonds. DNA polymerase is used to synthesize new DNA strands by adding nucleotides to a primer. Reverse transcriptase is essential for creating complementary DNA from an RNA template, which is a key step in cloning eukaryotic genes from messenger RNA.
Q2438. Which of the following literature details the genealogy and achievements of the Rathore dynasty?
Explanation
Mundiyar ri Khyat is an important historical work that provides a detailed genealogy and record of the achievements of the Rathore dynasty of Marwar. This khyat, or traditional chronicle, is a primary source for understanding the early history, territorial expansions, and internal politics of the Rathore rulers. It serves as a vital tool for historians researching the medieval period of Western Rajasthan.
Q2439. Match List-I (Important Ports/Towns of Satavahana period) with List-II (Modern geographical context).
| Important Ports/Towns of Satavahana period | Modern geographical context |
|---|---|
| A. Barygaza (Bharuch) | i. Coastal Maharashtra |
| B. Sopara | ii. Inland capital on the banks of Godavari |
| C. Pratishthana (Paithan) | iii. Major center in the lower Krishna valley |
| D. Amaravati | iv. Major port at the mouth of Narmada in Gujarat |
Explanation
Several towns were vital to the Satavahana economy. Barygaza (Bharuch) was a major port at the Narmada’s mouth in Gujarat. Sopara served as a significant port on the Maharashtra coast. Pratishthana (Paithan), located on the banks of the Godavari, was the primary inland capital. Amaravati, situated in the lower Krishna valley, was a flourishing religious and commercial center. These locations formed a strategic trade network.
Q2440. Match List-I with List-II and select the correct answer:
| Office | Administers Oath to the Office |
|---|---|
| A. President | i. President or his appointee |
| B. Prime Minister | ii. Chief Justice of India |
| C. Vice President | iii. President |
| D. Chief Justice of India | iv. President or some person appointed in that behalf by him |
Explanation
Oaths of office are administered by specific authorities. The Chief Justice of India administers the oath to the President. The President, in turn, administers the oath to the Prime Minister, Vice- President, and the Chief Justice of India. In some cases, the President may appoint another person to perform this duty. These oaths are crucial for assuming constitutional responsibilities and maintaining legal order.Answer key for these questions
| Q | Correct answer |
|---|---|
| 2431 | (d) Cleavage of DNA at specific internal recognition sites |
| 2432 | (a) Sawai Pratap Singh |
| 2433 | (a) Discovery of monsoon winds by Hippalus which increased Roman trade. |
| 2434 | (a) II, IV, I, III |
| 2435 | (a) Well-drained black clayey soil, ample sunshine, and a long frost-free period. |
| 2436 | (a) Hilly and difficult terrain |
| 2437 | (a) A-ii, B-i, C-iv, D-iii |
| 2438 | (c) Mundiyar ri Khyat |
| 2439 | (a) A-iv, B-i, C-ii, D-iii |
| 2440 | (a) A-ii, B-iii, C-iv, D-i |
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.