Nutrition and Health Practice Questions

Q: What is the recommended daily dose of folic acid for women of childbearing age?

0.4 mg. **Explanation:** The correct answer is **0.4 mg**. Folic acid (Vitamin B9) is essential for DNA synthesis and amino acid metabolism. For women of childbearing age, the primary goal of supplementation is the prevention of **Neural Tube Defects (NTDs)** like spina bifida and anencephaly. Since the neural tube closes by the 28th day of gestation—often before a woman knows she is pregnant—periconceptional supplementation is vital. * **Why 0.4 mg is correct:** International and national guidelines (including WHO and MoHFW) recommend a daily dose of **400 micrograms (mcg)** for all women of reproductive age. Numerically, 400 mcg is equivalent to **0.4 mg**. * **Option A (400 micrograms):** While mathematically identical to 0.4 mg, in the context of this specific MCQ format, 0.4 mg is the standard unit used in clinical guidelines and pharmacological labeling for this recommendation. * **Option B (40 micrograms):** This dose is sub-therapeutic and insufficient to prevent NTDs. * **Option C (0.5 mg):** This is slightly higher than the standard recommendation for low-risk pregnancies. However, **5 mg (not 0.5 mg)** is the dose recommended for "high-risk" women (those with a previous history of a child with NTD, diabetes, or on anti-epileptic drugs). **High-Yield Clinical Pearls for NEET-PG:** 1. **Timing:** Supplementation should ideally start **4 weeks before conception** and continue through the **first trimester** (12 weeks). 2. **IFA Tablets (National Program):** Under the *Anemia Mukt Bharat* strategy, WRA (Women of Reproductive Age) receive 60 mg elemental Iron + 500 mcg (0.5 mg) Folic Acid weekly. 3. **High-Risk Dose:** 5 mg/day is the standard for secondary prevention of NTDs. 4. **Food Fortification:** Folic acid is the most common nutrient used in the fortification of wheat flour and rice to improve public health outcomes.

Q: What is the recommended daily extra calorie requirement during the first trimester of pregnancy?

150 calories. **Explanation:** The nutritional requirements during pregnancy are governed by the physiological needs of the growing fetus, placenta, and maternal tissue expansion. According to the **ICMR-NIN (2020) guidelines**, the energy requirements for pregnancy are now categorized by trimester to reflect the progressive metabolic demands. **1. Why 150 calories is correct:** During the **first trimester**, fetal growth is minimal (embryogenesis phase), but maternal physiological changes begin. The ICMR-NIN recommends an additional **+350 kcal/day** as an average across the entire pregnancy; however, when broken down by stages, the first trimester requires only **+150 kcal/day**. This is a significant update from older guidelines that suggested no extra calories were needed in the first three months. **2. Analysis of Incorrect Options:** * **Option A (50 kcal):** This value is too low to support the initial metabolic shifts and hormonal changes occurring in early pregnancy. * **Option C (350 kcal):** This is the recommended extra allowance for the **second trimester**. It is also the "average" figure often cited in older textbooks for the entire duration of pregnancy. * **Option D (450 kcal):** This is the recommended extra allowance for the **third trimester**, where fetal weight gain is most rapid and energy demands are at their peak. **High-Yield Clinical Pearls for NEET-PG:** * **Lactation:** Requires **+600 kcal/day** (0–6 months) and **+520 kcal/day** (6–12 months). * **Protein:** The additional protein requirement for pregnancy (ICMR 2020) is **+9.5 g/day** (2nd trimester) and **+22.0 g/day** (3rd trimester). * **Weight Gain:** A woman with a normal BMI should ideally gain **10–12 kg** during pregnancy. * **Iron:** Requirement is **27 mg/day** (previously 35 mg/day in older guidelines).

Q: What is the recommended age for the first dose of vitamin A supplementation?

9 months. ### Explanation **Correct Answer: C. 9 months** **Why 9 months is correct:** Under the **National Prophylaxis Programme against Nutritional Blindness** and the **Universal Immunization Programme (UIP)** in India, the first dose of Vitamin A (1 lakh IU) is administered at **9 completed months**. This timing is strategically synchronized with the **first dose of the Measles/MRIs vaccine**. Measles infection significantly depletes Vitamin A stores and is a leading cause of childhood blindness; therefore, co-administration provides essential immune support and ocular protection during this vulnerable period. **Why other options are incorrect:** * **3 months & 6 months:** Infants are generally protected by maternal antibodies and Vitamin A stores from breast milk during the first six months. Routine supplementation is not recommended this early unless the infant is non-breastfed or showing clinical signs of deficiency. * **12 months:** Waiting until 12 months would leave the infant unprotected during the high-risk window (9–12 months) when complementary feeding begins and maternal antibody levels for measles decline. **High-Yield Clinical Pearls for NEET-PG:** * **Dosage Schedule:** * **1st Dose:** 1 lakh IU (1 ml) at 9 months. * **2nd to 9th Dose:** 2 lakh IU (2 ml) every 6 months until the age of 5 years. * **Total Doses:** A child receives a total of **9 doses**. * **Total Cumulative Dose:** **17 lakh IU** (1 + [8 × 2] = 17). * **Oil-based solution:** Vitamin A is fat-soluble and is administered orally using a calibrated spoon. * **Therapeutic Dose:** For active Xerophthalmia, the schedule is Day 0, Day 1, and Day 14 (Age-specific dosing: 12m: 2 lakh IU).

Q: Which of the following is considered a goitrogen?

Cabbage. **Explanation:** **Cabbage** is the correct answer because it belongs to the **Brassica genus** (Cruciferous vegetables), which contains naturally occurring substances known as **goitrogens**. 1. **Mechanism:** Goitrogens are substances that interfere with iodine uptake by the thyroid gland or inhibit the enzyme thyroid peroxidase. In the case of cabbage, cauliflower, and mustard, they contain **thiocyanates** and **isothiocyanates**. These compounds compete with iodine for transport into the thyroid, potentially leading to a decrease in thyroxine (T4) production, a compensatory rise in TSH, and subsequent thyroid enlargement (goiter). 2. **Incorrect Options:** * **Papaya:** A rich source of Vitamin A and C; it does not contain goitrogenic compounds. * **Spinach:** While it contains oxalates (which can interfere with calcium absorption), it is not classified as a primary goitrogen. * **Orange:** A citrus fruit primarily known for Vitamin C and flavonoids; it has no inhibitory effect on thyroid function. **High-Yield Clinical Pearls for NEET-PG:** * **Common Goitrogens:** Cabbage, Cauliflower, Cassava (contains cyanogenic glycosides), Tapioca, Mustard, and Soya bean. * **Environmental Goitrogens:** High fluoride in water and certain pollutants can also act as goitrogens. * **Public Health Note:** The goitrogenic effect of vegetables like cabbage is usually only clinically significant in the presence of **concomitant iodine deficiency**. Cooking/boiling these vegetables often inactivates the goitrogenic enzymes (myrosinase), reducing their antithyroid activity. * **Endemic Goiter:** Defined when the prevalence of goiter in a community is >5%.

Q: Which of the following pulses contains the highest amount of protein?

Soyabean. **Explanation:** The correct answer is **Soyabean**. In the context of Community Medicine and Nutrition, pulses are the primary source of vegetable protein, especially in vegetarian diets. **1. Why Soyabean is correct:** Soyabean (*Glycine max*) is unique among pulses because it is a "rich source" of both protein and fat. It contains approximately **40-43% protein**, which is nearly double the protein content found in other common pulses. Furthermore, soy protein is considered a "complete protein" among plant sources as it contains all essential amino acids in sufficient quantities, making its biological value higher than other legumes. **2. Why other options are incorrect:** * **Green gram (Moong dal), Red gram (Arhar/Tur dal), and Black gram (Urad dal):** These are common Indian pulses. While they are excellent sources of protein, their protein content typically ranges between **20% to 25%**. * Green gram: ~24% * Red gram: ~22% * Black gram: ~24% Since 40% (Soyabean) is significantly higher than 24%, these options are incorrect. **3. High-Yield Clinical Pearls for NEET-PG:** * **Limiting Amino Acid:** Most pulses (including those in the options) are deficient in **Methionine** but rich in **Lysine**. Conversely, cereals are deficient in Lysine but rich in Methionine. This is the basis for **"Mutual Supplementation"** (e.g., Khichdi), which improves the Net Protein Utilization (NPU). * **Reference Protein:** Egg is considered the reference protein (Biological Value = 100). * **Pulse Protein Content:** Average pulses provide 20-25g of protein per 100g, while Soyabean provides 40-43g. * **Antinutritional Factors:** Pulses often contain phytates and lectins; Soyabean specifically contains **Trypsin inhibitors**, which are inactivated by thorough cooking (heat).

Q: The vitamin A supplement administered in the Prevention of Nutritional Blindness in Children Programme contains which of the following?

1 Lakh IU/ml. The **National Vitamin A Prophylaxis Programme** (part of the Prevention of Nutritional Blindness in Children) utilizes a specific concentration of Vitamin A syrup to facilitate mass administration and accurate dosing. ### **Explanation of the Correct Answer** The standard Vitamin A solution used in the government program is **1 Lakh (100,000) IU per ml**. This concentration is chosen for its ease of measurement using a standardized 2 ml spoon: * **At 9 months (with Measles/MR vaccine):** A half-spoon dose (1 ml) provides **1 Lakh IU**. * **From 18 months to 5 years:** A full-spoon dose (2 ml) provides **2 Lakh IU**. This standardized concentration ensures that health workers can deliver the correct dosage (1 Lakh vs. 2 Lakh IU) simply by adjusting the volume administered. ### **Why Other Options are Incorrect** * **Option A (25,000 IU/ml):** This concentration is too low for the national program; it would require administering 4–8 ml of syrup, increasing the risk of aspiration and wastage. * **Options C & D (3 Lakh & 5 Lakh IU/ml):** These concentrations are dangerously high. Vitamin A is fat-soluble and stored in the liver; excessive doses can lead to acute toxicity (hypervitaminosis A), characterized by bulging fontanelles, vomiting, and increased intracranial pressure. ### **High-Yield Clinical Pearls for NEET-PG** * **Total Doses:** A child receives a total of **9 doses** starting from 9 months until 5 years of age. * **Total Cumulative Dose:** 17 Lakh IU (1 Lakh at 9 months + 8 doses of 2 Lakh every 6 months). * **Interval:** The minimum interval between two doses is **6 months**. * **Therapeutic Dose for Xerophthalmia:** If a child is diagnosed with active Vitamin A deficiency, the schedule is: **Day 0, Day 1, and Day 14** (Age 12m: 2 Lakh IU).

Q: What test is used to detect the contamination of mustard oil with argemone oil?

Nitric acid test. **Explanation:** The detection of **Argemone oil** (from *Argemone mexicana* seeds) in mustard oil is a high-yield topic in forensic toxicology and community medicine. Argemone oil contains the toxic alkaloid **Sanguinarine**, which interferes with the oxidation of pyruvic acid, leading to its accumulation in the blood. **1. Why Nitric Acid Test is Correct:** The **Nitric Acid Test** is the standard bedside/field test for detecting argemone oil. When concentrated nitric acid is added to the contaminated oil and shaken, a **reddish-orange/crimson color** develops in the acid layer. This color change is due to the reaction of nitric acid with the alkaloid sanguinarine. **2. Analysis of Incorrect Options:** * **Sulphuric acid test:** While sulphuric acid is used in various chemical tests (like the Baudouin test for sesame oil), it is not the specific diagnostic reagent for argemone oil contamination. * **Chromic acid test:** Chromic acid is primarily used as a cleaning agent or in the oxidation of alcohols; it does not produce a diagnostic color reaction with sanguinarine. **3. Clinical Pearls for NEET-PG:** * **Epidemic Dropsy:** Consumption of mustard oil adulterated with argemone oil leads to Epidemic Dropsy. * **Clinical Features:** Characterized by bilateral pitting edema of legs, gastrointestinal disturbance, and **Glaucoma** (due to increased capillary permeability). * **Cardiac Involvement:** Can lead to high-output heart failure. * **Confirmatory Test:** While the Nitric Acid test is a screening test, **Paper Chromatography** is the most sensitive and confirmatory method for detecting even trace amounts (up to 0.001%) of argemone oil.

Question 1

What is the recommended daily dose of folic acid for women of childbearing age?

Accepted Answer

0.4 mg

Answer

400 micrograms

Answer

40 micrograms

Answer

0.5 mg

Question 2

What is the recommended daily extra calorie requirement during the first trimester of pregnancy?

Accepted Answer

150 calories

Answer

50 calories

Answer

350 calories

Answer

450 calories

Question 3

What is the recommended age for the first dose of vitamin A supplementation?

Accepted Answer

9 months

Answer

3 months

Answer

6 months

Answer

12 months

Question 4

Which of the following is considered a goitrogen?

Accepted Answer

Cabbage

Answer

Papaya

Answer

Spinach

Answer

Orange

Question 5

According to the traffic light diet plan for children, which of the following best describes a 'green light' food?

Accepted Answer

Low in calories, high in fiber, low in fat, and nutrient-dense

Answer

Nutrient-dense, but higher in calories and fat

Answer

High in calories, sugar, and fat

Answer

None of the above

Question 6

Which of the following pulses contains the highest amount of protein?

Accepted Answer

Soyabean

Answer

Green gram

Answer

Red gram

Answer

Black gram

Question 7

Which protein quality indicator was adopted by the Indian Council of Medical Research (ICMR) when recommending dietary protein requirements?

Accepted Answer

Net protein utilization

Answer

Amino acid score

Answer

Biological value

Answer

Protein efficiency ratio

Question 8

The vitamin A supplement administered in the Prevention of Nutritional Blindness in Children Programme contains which of the following?

Accepted Answer

1 Lakh IU/ml

Answer

25,000 IU/ml

Answer

3 Lakh IU/ml

Answer

5 Lakh IU/ml

Question 9

Which of the following statements regarding the refining of oils is NOT TRUE?

Accepted Answer

It increases the unsaturated fatty acid content of the oil.

Answer

Refining is done using steam, alkali, etc.

Answer

It removes free fatty acids and rancid material from oil.

Answer

Refined oils are generally more costly than unrefined oils.

Question 10

What test is used to detect the contamination of mustard oil with argemone oil?

Accepted Answer

Nitric acid test

Answer

Sulphuric acid test

Answer

Chromic acid test

Answer

All of the above

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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