Q3291. The "4 Ds" -- Dermatitis, Diarrhea, Dementia, and Death -- are classic symptoms of which nutritional deficiency disease?
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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Q3292. A deficiency in zinc in children is most strongly associated with:
Explanation
Zinc is a critical micronutrient for immune system function and the integrity of the intestinal lining. A deficiency in zinc impairs the body’s ability to fight infections, particularly in the digestive tract. This significantly increases the risk, severity, and duration of diarrheal episodes in children. Consequently, zinc supplementation is a standard recommendation for the management of acute diarrhea, helping to reduce its impact and prevent further complications.
Q3293. Which of the following supplements is universally recommended by the WHO for pregnant women to prevent maternal anemia and puerperal sepsis?
Explanation
The combination of iron and folic acid is universally recommended for pregnant women to ensure a healthy pregnancy and prevent maternal anaemia. Iron is essential for making haemoglobin to carry oxygen to the fetus, while folic acid is crucial for the early development of the baby’s brain and spinal cord. Regular supplementation significantly reduces the risk of low birth weight and other complications for both mother and child.
Q3294. The term "Wasting" in the context of child malnutrition refers to:
Explanation
Wasting is a form of acute malnutrition that reflects a recent and severe process of weight loss, often associated with acute starvation or severe disease. It is clinically defined by a low weight-for-height ratio. Wasting can be life-threatening as it significantly increases a child’s susceptibility to infections. Identifying and treating wasting promptly is a major priority in public health programs aimed at reducing child mortality and improving nutritional outcomes.
Q3295. Blanching is a process often used before freezing or canning vegetables. Its primary purpose is to:
Explanation
Blanching is a short heat treatment where vegetables are immersed in boiling water or steam for a brief period before being rapidly cooled. This process is essential for inactivating enzymes that would otherwise continue to cause the deterioration of flavor, color, and texture during frozen or canned storage. Blanching also helps clean the surface of the vegetables and softens the tissue, making them easier to package.
Q3296. The "Eat Right India" movement, aiming to transform the country’s food system to ensure safe, healthy, and sustainable food, is an initiative led by:
Explanation
The "Eat Right India" movement is a flagship initiative led by the Food Safety and Standards Authority of India. Its goal is to transform the national food system by promoting safe, healthy, and sustainable eating habits among the population. The movement focuses on three key pillars: eating safe, eating healthy, and eating sustainably. It involves a wide range of stakeholders to create a culture of food safety and wellness.
Q3297. The digestion of which macronutrient begins in the mouth?
Explanation
The digestion of carbohydrates begins in the mouth, where the enzyme salivary amylase starts breaking down complex starches into simpler sugars. Mechanical chewing also helps by increasing the surface area of the food. While the digestion of proteins and fats occurs primarily in the stomach and small intestine, respectively, the mouth provides the necessary environment for the initial chemical breakdown of starchy foods during the process of mastication.
Q3298. Which cells are known as the "scavenger cells" of the immune system because they clear away dead cells and debris?
Explanation
Macrophages are vital components of the innate immune system that function as the body’s primary scavenger cells. They move throughout the tissues, engulfing and digesting cellular debris, foreign substances, and invading microorganisms through the process of phagocytosis. By clearing away dead cells and potentially harmful pathogens, macrophages play a crucial role in maintaining tissue health and initiating the healing process after an injury or an infection has occurred.
Q3299. The Covid-19 vaccines produced by Pfizer- BioNTech and Moderna are based on which novel vaccine technology?
Explanation
The Pfizer-BioNTech and Moderna Covid-19 vaccines utilized a groundbreaking technology called messenger RNA. Instead of using a weakened or killed virus, these vaccines provide the body’s cells with genetic instructions to produce a harmless piece of the virus’s spike protein. This protein then triggers an immune response, leading to the production of antibodies and the development of immunological memory, providing highly effective protection against the actual virus if it is encountered.
Q3300. In the context of the central administration of medieval Rajasthan, which of the following best defines the role of the ruler?
Explanation
The ruler in medieval Rajasthan served as the pinnacle of the state administration, wielding absolute power over executive, judicial, and military matters. Despite this supreme authority, the ruler was not a despot. Governance was strictly tempered by the principles of Dharma and established clan traditions, ensuring a balance between centralized control and social norms.Answer key for these questions
| Q | Correct answer |
|---|---|
| 3291 | (a) Pellagra |
| 3292 | (c) Increased risk of severe and prolonged diarrhea |
| 3293 | (a) Iron and Folic Acid (IFA) |
| 3294 | (d) Inadequate weight for a given height |
| 3295 | (c) Inactivating enzymes that cause flavor and color loss |
| 3296 | (d) FSSAI |
| 3297 | (a) Carbohydrates |
| 3298 | (b) Macrophages |
| 3299 | (b) Messenger RNA (mRNA) |
| 3300 | (b) The supreme authority in executive, judicial, and military spheres, guided by Dharma and clan norms |
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.