Q1. Which of the following components of food primarily serves as the main source of immediate energy for the human body?
Health, Environment and Agriculture: RAS Prelims MCQs
662 RAS Prelims practice MCQs on health, environment and agriculture are on this page, in 4 chapters. They cover human health, food, nutrition and public health programmes, environmental and ecological changes and impact assessment, biodiversity and conservation of natural resources, and agriculture, horticulture, forestry and animal husbandry in Rajasthan. Each question has an answer and an explanation.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
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Q2. Which of the following is an exception to the primary function of proteins in the human body?
Explanation
Proteins are essential for structural components of cells, repairing tissues, and synthesizing hormones or enzymes. However, their role in energy storage is minimal compared to fats and carbohydrates. The body primarily stores energy in the form of glycogen or adipose tissue rather than protein, utilizing protein for fuel only during states of prolonged starvation.
Q3. Consider the following statements regarding fats in the human diet:
I. Saturated fats are typically solid at room temperature.
II. Trans fats increase the levels of high-density lipoprotein (HDL) cholesterol.
III. Fats provide more than double the energy per gram compared to carbohydrates.
Which of the above statement(s) is/are correct?
I. Saturated fats are typically solid at room temperature.
II. Trans fats increase the levels of high-density lipoprotein (HDL) cholesterol.
III. Fats provide more than double the energy per gram compared to carbohydrates.
Which of the above statement(s) is/are correct?
Explanation
Saturated fats typically maintain a solid state at room temperature due to their chemical structure. Regarding energy density, fats provide approximately nine kilocalories per gram, which is more than double the energy supplied by carbohydrates. Trans fats are harmful because they simultaneously raise low-density lipoprotein levels while lowering high-density lipoprotein levels in the human bloodstream.
Q4. Which of the following vitamins is correctly paired with its chemical name?
Explanation
Vitamin C is chemically known as ascorbic acid and is vital for collagen synthesis and immune function. Vitamin A is referred to as retinol, while Vitamin D is called calciferol. Vitamin B1 is scientifically named thiamine. Understanding these chemical names is essential for identifying specific nutrient functions and the corresponding deficiency diseases that might affect health.
Q5. The deficiency of iron in the human body most directly leads to which of the following conditions?
Explanation
Iron is a critical component of haemoglobin, the protein in red blood cells responsible for transporting oxygen throughout the body. A deficiency in iron leads to reduced haemoglobin levels, resulting in anaemia. This condition causes symptoms such as fatigue and weakness because the body’s tissues and organs do not receive sufficient oxygen for metabolism.
Q6. The concept of Recommended Dietary Allowance (RDA) refers to the:
Explanation
The Recommended Dietary Allowance represents the average daily dietary nutrient intake level that is sufficient to meet the nutrient requirements of nearly all healthy individuals in a particular life stage and gender group. It serves as a goal for daily intake to ensure nutritional adequacy and prevent chronic diseases associated with specific nutrient deficiencies.
Q7. Which of the following is a direct consequence of overnutrition?
Explanation
Overnutrition occurs when the intake of nutrients or calories exceeds the body’s actual needs, leading to the excessive accumulation of adipose tissue. Obesity is a direct consequence of this chronic energy imbalance and is associated with various health risks. In contrast, conditions like marasmus and kwashiorkor result from undernutrition, specifically calorie or protein deficiencies.
Q8. The presence of Argemone oil in edible mustard oil is a common form of food adulteration that causes which disease?
Explanation
Epidemic dropsy is a clinical condition caused by the consumption of mustard oil contaminated with Argemone mexicana oil. This adulterant contains the toxin sanguinarine, which damages capillaries and leads to severe edema, cardiac failure, and potential blindness. It is a significant public health concern requiring strict food safety monitoring to prevent accidental or intentional poisoning.
Q9. Under the National Health Mission (NHM), what is the primary role of an ASHA worker?
Explanation
Accredited Social Health Activists are community health workers who serve as the primary link between the rural population and the public healthcare system. They play a vital role in mobilizing the community for immunization, institutional delivery, and family planning.
Q10. Poshan Abhiyan primarily targets the reduction of which of the following conditions in children?
Explanation
Poshan Abhiyan, also known as the National Nutrition Mission, is a flagship program aimed at improving nutritional outcomes for children, pregnant women, and lactating mothers. Its specific targets include reducing the prevalence of stunting, underweight, and low birth weight in young children. Additionally, it focuses on decreasing the high rates of anaemia across these vulnerable demographic groups.Answer key for these questions
| Q | Correct answer |
|---|---|
| 1 | (b) Carbohydrates |
| 2 | (a) Primary energy storage |
| 3 | (c) I and III only |
| 4 | (d) Vitamin C - Ascorbic Acid |
| 5 | (c) Anaemia |
| 6 | (b) Daily intake level sufficient for most healthy people |
| 7 | (d) Obesity |
| 8 | (a) Epidemic Dropsy |
| 9 | (c) Linking the community with the public health system |
| 10 | (d) Stunting, under-nutrition, and anaemia |
Key facts from Health, Environment and Agriculture
- The RPSC General Science syllabus includes human health and nutrition, environmental change, biodiversity and the agriculture of Rajasthan.
- Health questions pair a deficiency or a programme with its cause or target, for example iron with anaemia.
- Environment questions cover ecosystems, pollutants, laws and treaties, including carbon markets.
- Rajasthan agriculture questions deal with dryland farming, crops of the arid zones and the State’s agro-climatic zones.
- Science and technology, policies and defence are on the Science and Technology page.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Health, Environment and Agriculture?
This page has 662 practice MCQs on Health, Environment and Agriculture. Each has the correct answer, and most have an explanation.
Which chapters does this set cover?
Four chapters: human health, food, nutrition and public health programmes; environmental and ecological changes and their impact assessment; biodiversity, conservation of natural resources and sustainable development; and agriculture, horticulture, forestry and animal husbandry in Rajasthan.
Are health, environment and agriculture part of the RAS Prelims syllabus?
Yes. The General Knowledge and General Science paper includes human health, nutrition, environment, biodiversity and the agriculture sector of Rajasthan, so these topics can be asked every year.
How can I revise this part of the syllabus?
Make short lists of deficiency diseases, pollutants, laws and treaties, and Rajasthan crops and zones. Attempt each chapter, read the explanations of the misses and revisit the lists after a few days.