Q451. Identify the correctly matched pair regarding Harappan crafts and their prominent centers:
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Q452. When an Article of the Constitution is ambiguous and capable of more than one meaning, the judiciary often relies on which part of the Constitution for correct interpretation?
Explanation
The Preamble serves as a vital guide for the judiciary when interpreting the Constitution. If any Article is found to be ambiguous or capable of multiple meanings, the courts often look to the Preamble to understand the intentions of the framers and the underlying philosophy of the document. This helps in resolving legal uncertainties in a manner that aligns with the nation’s core ideals.
Q453. Which of the following pairs concerning the physical features of the Thar Desert is correctly matched?
Explanation
The Luni River originates in the Aravallis, not the Himalayas, and Sambhar is a saltwater lake. Barchans are crescent-shaped, not longitudinal dunes. The correct match is the Indira Gandhi Canal, which brings essential water to the Thar Desert from the Harike Barrage, where the Sutlej and Beas rivers meet. This project has significantly boosted irrigation and agriculture in the region.
Q454. The central aim of the Paris Agreement (2015) is to strengthen the global response to the threat of climate change by keeping the global temperature rise this century well below:
Explanation
The Paris Agreement is a legally binding international treaty on climate change. Its central goal is to limit global warming to well below 2 degrees Celsius, and preferably to 1.5 degrees, compared to pre-industrial levels. To achieve this, countries must reach global peaking of greenhouse gas emissions as soon as possible. This target is considered essential to avoid the most catastrophic impacts of climate change.
Q455. The domestic electrical supply in India generally uses Alternating Current (AC) at a frequency of:
Explanation
In India, the standard domestic electrical power supply provides alternating current at a frequency of fifty Hertz. This means the direction of the current changes one hundred times every second. Additionally, the standard voltage for home use is typically two hundred and twenty volts. This frequency and voltage combination is used to ensure compatibility and efficiency across the national electrical grid.
Q456. Which of the following materials is NOT typically found in the artifact hoards of the Ahar-Gilund culture?
Explanation
The Ahar-Gilund culture is defined by its rich Chalcolithic material assemblage. Common findings include copper axes, various steatite beads, and characteristic terracotta bull figurines, which may have had ritual significance. However, iron swords are not found in these hoards, as the Ahar culture flourished before the Iron Age. The appearance of iron weapons represents a much later technological and military transition.
Q457. Consider the following statements regarding the decline of the Indus Valley Civilisation and select the correct option:
Statement I: The sudden decline of Mohenjo-daro is conclusively proven by large-scale massacres found in the latest occupational levels.
Statement II: Modern scholars largely reject the Aryan Invasion Theory as the sole cause of the civilization’s collapse.
Statement I: The sudden decline of Mohenjo-daro is conclusively proven by large-scale massacres found in the latest occupational levels.
Statement II: Modern scholars largely reject the Aryan Invasion Theory as the sole cause of the civilization’s collapse.
Explanation
The idea that Mohenjo-daro was destroyed by a massacre has been largely discredited, as the skeletal remains found were not all from the same time period and showed no signs of battle. Most modern scholars also reject the Aryan Invasion Theory as the sole explanation for the collapse. Instead, they favor a combination of environmental and socio-economic factors.
Q458. Match List I with List II and select the correct answer from the options given below:
| Article of the Constitution | Provision related to Citizenship |
|---|---|
| A. Article 5 | i. Rights of citizenship of certain persons of Indian origin residing outside India |
| B. Article 6 | ii. Citizenship at the commencement of the Constitution based on domicile |
| C. Article 7 | iii. Rights of citizenship of certain migrants to India from Pakistan |
| D. Article 8 | iv. Rights of citizenship of certain migrants to Pakistan who later returned to India |
Explanation
Article 5 deals with citizenship at the commencement of the Constitution for those domiciled in India. Article 6 covers the rights of persons who migrated to India from Pakistan. Article 7 addresses those who migrated to Pakistan but later returned to India. Article 8 concerns persons of Indian origin residing outside the country, ensuring they could register as Indian citizens under specific conditions.
Q459. The continuous formation and shifting of sand dunes in the Thar Desert is an effect of which dominant geomorphic process?
Explanation
The formation and continuous shifting of sand dunes in the Thar Desert are the results of aeolian processes. This involves the work of wind as a geological agent. Strong winds transport loose sand particles through suspension and saltation. When the wind loses energy or encounters an obstacle, it deposits the sand, creating various dune shapes that change over time as wind patterns shift.
Q460. In the context of international climate agreements, the principle of CBDR-RC stands for:
Explanation
The principle of Common But Differentiated Responsibilities and Respective Capabilities acknowledges that all countries have a duty to address climate change. However, it also recognizes that developed nations have historically contributed more to the problem and have more financial resources. Therefore, they should take the lead in reducing emissions and providing support, while developing nations contribute according to their specific national circumstances.Answer key for these questions
| Q | Correct answer |
|---|---|
| 451 | (b) Shell object making - Nageshwar and Balakot |
| 452 | (b) The Preamble |
| 453 | (b) Indira Gandhi Canal - Sources water from the Harike Barrage |
| 454 | (b) Well below 2 degrees Celsius. |
| 455 | (a) 50 Hz |
| 456 | (c) Iron swords |
| 457 | (b) Statement I is incorrect and Statement II is correct. |
| 458 | (a) A-ii, B-iii, C-iv, D-i |
| 459 | (c) Aeolian transportation and deposition |
| 460 | (c) Common But Differentiated Responsibilities and Respective Capabilities |
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.