Q2661. In energy storage, how do nanomaterials improve the performance of batteries (e.g., lithium-ion)?
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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Q2662. Identify the potential negative impact (toxicity) associated with nanotechnology.
Explanation
A major health concern with nanotechnology is the potential toxicity of inhaled nanoparticles. Because of their extremely small size, these particles can bypass the lungs natural clearance mechanisms and penetrate deep into the respiratory system. From there, they can enter the bloodstream and travel to other organs, where they may cause inflammation, oxidative stress, or other types of cellular damage.
Q2663. The term ‘smart drugs’ in nanotechnology refers to drugs that:
Explanation
In nanotechnology, smart drugs refer to advanced drug delivery systems designed to transport medication directly to the diseased site in the body while leaving healthy cells untouched. These systems often consist of nanoparticles that encapsulate the drug and are engineered to release their cargo only when they encounter a specific biological trigger, such as a change in pH or specific enzymes.
Q2664. Consider the following statements regarding the Genetic Engineering Appraisal Committee (GEAC):
Statement I: GEAC is the apex body in India responsible for approving the commercial release of genetically modified crops.
Statement II: GEAC functions under the Ministry of Environment, Forest and Climate Change.
Which of the following represents the correct option?
Statement I: GEAC is the apex body in India responsible for approving the commercial release of genetically modified crops.
Statement II: GEAC functions under the Ministry of Environment, Forest and Climate Change.
Which of the following represents the correct option?
Explanation
The Genetic Engineering Appraisal Committee is the primary regulatory body in India established under the Ministry of Environment, Forest and Climate Change. Its main responsibility is to assess and approve the safety and environmental impact of genetically modified organisms before they are released for large-scale field trials or commercial cultivation. This ensures that biotechnology products are safe for human consumption.
Q2665. Biopiracy refers to:
Explanation
Biopiracy is the unethical or illegal practice of commercially exploiting biological resources and the traditional knowledge of indigenous communities without providing fair compensation or obtaining proper authorization. This often involves companies from developed nations obtaining patents on traditional medicines found in developing countries, effectively stealing the resource and restricting its use by the original communities who first discovered its beneficial properties.
Q2666. The controversial patenting of which famous Indian agricultural product by an American company in the late 1990s is a classic example of biopiracy?
Explanation
In the late 1990s, an American company was granted a US patent for Basmati rice lines and grains. This caused a major international controversy because Basmati is a traditional aromatic rice variety grown for centuries in the Indian subcontinent. India challenged the patent, arguing that it was a case of biopiracy and that the company had not created a new variety.
Q2667. Which of the following traditional Indian plants was the subject of a major biopiracy battle regarding its wound-healing properties, leading to the revocation of a US patent?
Explanation
The attempt to patent the wound-healing use of turmeric (haldi) in the United States led to a major biopiracy battle, and the patent was revoked after India showed prior traditional knowledge.
Q2668. The deliberate release of viruses, bacteria, or other germs to cause illness or death in people, animals, or plants is termed:
Explanation
The deliberate release of viruses, bacteria or other germs to cause illness or death in people, animals or plants is called bioterrorism.
Q2669. Which of the following ethical issues is directly associated with the mandatory collection of DNA for national databases?
Explanation
The mandatory collection of DNA for national databases raises the risk of genetic discrimination, for example by insurance providers.
Q2670. Eugenics, a scientifically and ethically discredited practice, involves:
Explanation
Eugenics is the discredited practice of breeding programmes aimed at increasing desirable human traits.Answer key for these questions
| Q | Correct answer |
|---|---|
| 2661 | (a) Larger surface area for efficient charge transport |
| 2662 | (c) Inhaled particles entering the blood and causing harm |
| 2663 | (a) Targeted delivery systems that release under conditions |
| 2664 | (a) Both Statement I and Statement II are correct. |
| 2665 | (a) Unauthorized exploitation of resources and knowledge |
| 2666 | (d) Basmati Rice |
| 2667 | (b) Turmeric (Haldi) |
| 2668 | (d) Bioterrorism |
| 2669 | (a) Risks of genetic discrimination by insurance providers |
| 2670 | (c) Breeding programs aimed at increasing desirable traits |
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.