Q2491. What is the most appropriate description of the function of the State Finance Commission (SFC)?
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Q2492. Consider the following steps of the Polymerase Chain Reaction (PCR):
A. Extension
B. Denaturation
C. Annealing
Which of the following represents the correct sequence?
A. Extension
B. Denaturation
C. Annealing
Which of the following represents the correct sequence?
Explanation
A single cycle of the Polymerase Chain Reaction consists of three distinct temperature-dependent steps in a specific order. First is denaturation, where the double-stranded DNA is heated to separate into single strands. Second is annealing, where the temperature is lowered to allow primers to bind to the target. Finally, extension occurs, where the DNA polymerase synthesizes new strands by extending from the primers.
Q2493. Given below are two statements, one labelled as
Assertion (A) and the other as Reason (R):
Assertion (A): Rana Sanga’s defeat at Khanwa shifted the balance of power in North India towards the Mughals.
Reason (R): The battle exposed the technological superiority of Babur’s artillery and tulughma tactics over traditional Rajput warfare.
Which of the following is correct?
Assertion (A) and the other as Reason (R):
Assertion (A): Rana Sanga’s defeat at Khanwa shifted the balance of power in North India towards the Mughals.
Reason (R): The battle exposed the technological superiority of Babur’s artillery and tulughma tactics over traditional Rajput warfare.
Which of the following is correct?
Explanation
Rana Sanga’s defeat at the Battle of Khanwa in 1527 was a turning point for North India. While the Rajputs were numerically superior and fought with traditional valor, they could not match Babur’s advanced military technology. The Mughal use of field artillery and the "tulughma" flanking tactic effectively neutralized the Rajput cavalry charges, leading to a decisive Mughal victory and shifting the regional balance of power.
Q2494. Match List-I with List-II and select the correct answer:
| Type of Veto | Mechanism to override |
|---|---|
| A. Absolute Veto | i. Overridden by the legislature with an ordinary majority |
| B. Qualified Veto | ii. Overridden by the legislature with a higher majority |
| C. Suspensive Veto | iii. Cannot be overridden, bill ends |
| D. Pocket Veto | iv. No mechanism to override as no action is taken |
Explanation
Different vetoes have varying mechanisms for being overridden by the legislature. An absolute veto cannot be overridden, effectively ending the bill. A qualified veto requires a higher majority to override, while a suspensive veto can be overridden by an ordinary majority. A pocket veto has no override mechanism because the President takes no formal action, leaving the bill in a state of suspension.
Q2495. Which of the following statements about fiscal decentralisation in India is correct?
Explanation
Despite constitutional mandates, the actual level of fiscal decentralization varies widely. Many state governments are hesitant to transfer significant financial powers or revenue sources to local bodies, preferring to maintain central control over expenditures. This reluctance often limits the effectiveness of Panchayats and Municipalities, as they remain dependent on state-level grants rather than having their own robust and independent revenue streams.
Q2496. Given below are two statements, one labeled as
Assertion (A) and the other as Reason (R):
Assertion (A): Taq polymerase is extensively used in the PCR process.
Reason (R): Taq polymerase is a thermostable enzyme that remains active during the high-temperature denaturation step.
Select the correct answer from the codes given below:
Assertion (A) and the other as Reason (R):
Assertion (A): Taq polymerase is extensively used in the PCR process.
Reason (R): Taq polymerase is a thermostable enzyme that remains active during the high-temperature denaturation step.
Select the correct answer from the codes given below:
Explanation
Taq polymerase is indispensable for PCR because it is derived from a thermophilic bacterium and can withstand high temperatures. Standard DNA polymerases would be permanently denatured and inactivated during the 95°C step required to separate DNA strands. The thermostability of Taq allows the enzyme to remain functional throughout multiple cycles of heating and cooling, enabling the automated amplification of the target DNA sequence.
Q2497. The title of "Gaj Singh" was conferred upon the Rathore ruler by which Mughal Emperor?
Explanation
Maharaja Gaj Singh I of Marwar was a prominent Rathore ruler who served the Mughal Empire with distinction. In recognition of his military prowess and loyalty, Emperor Jahangir conferred upon him the title of "Gaj Singh" and "Dal Thambhan," meaning ‘the withholder of armies’. This title reflected his status as a leading general and the high regard in which he was held at the Mughal court.
Q2498. Which of the following is NOT a fundamental duty of the Prime Minister under Article 78?
Explanation
Article 78 outlines the Prime Minister’s duties regarding the President. These include communicating all cabinet decisions, furnishing requested information on administration, and submitting matters decided by a single minister for cabinet consideration. However, presenting the Annual Financial Statement is not a constitutional duty of the Prime Minister; it is typically performed by the Finance Minister on behalf of the President under Article 112.
Q2499. Match the Articles of the Constitution in List I with their provisions regarding local bodies in
List II:
List I: (Article of the Constitution)
A. Article 243H
B. Article 243I
C. Article 243W
D. Article 243Y
List II: (Provision regarding local bodies)
i. Constitution of State Finance Commission for Panchayats
ii. Powers to impose taxes by, and Funds of, the Panchayats
iii. Constitution of State Finance Commission for Municipalities
iv. Powers, authority and responsibilities of Municipalities
Choose the correct answer:
List II:
List I: (Article of the Constitution)
A. Article 243H
B. Article 243I
C. Article 243W
D. Article 243Y
List II: (Provision regarding local bodies)
i. Constitution of State Finance Commission for Panchayats
ii. Powers to impose taxes by, and Funds of, the Panchayats
iii. Constitution of State Finance Commission for Municipalities
iv. Powers, authority and responsibilities of Municipalities
Choose the correct answer:
Explanation
The 73rd and 74th Amendments introduced articles to ensure local bodies have financial autonomy and structured support. Article 243H and 243W define the powers and responsibilities of Panchayats and Municipalities respectively. Meanwhile, Articles 243I and 243Y mandate the Governor to constitute State Finance Commissions to review the financial health of these local bodies and recommend sustainable revenue-sharing models.
Q2500. The bacterium from which Taq polymerase is isolated is:
Explanation
Taq polymerase is isolated from the bacterium Thermus aquaticus, which was originally discovered in the hot springs of Yellowstone National Park. Because this organism thrives in extremely high-temperature environments, its enzymes have evolved to remain stable and active even at temperatures near boiling. This unique property made it the ideal enzyme for automating the PCR process, which requires repeated heating steps to denature DNA.Answer key for these questions
| Q | Correct answer |
|---|---|
| 2491 | (a) Recommending tax revenue distribution between the State and local bodies |
| 2492 | (a) B, C, A |
| 2493 | (a) Both A and R are true and R is the correct explanation of A. |
| 2494 | (a) A-iii, B-ii, C-i, D-iv |
| 2495 | (c) State Governments are often reluctant to devolve financial powers to local bodies |
| 2496 | (a) Both A and R are true and R is the correct explanation of A. |
| 2497 | (d) Jahangir |
| 2498 | (d) To personally present the Annual Financial Statement before the Lok Sabha. |
| 2499 | (a) A-ii, B-i, C-iv, D-iii |
| 2500 | (a) Thermus aquaticus |
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.