Consider the following statements about deficiency diseases: 1. Deficiency diseases are those caused by the intake of excess fat over a short period. 2. Deficiency of Vitamin B1 causes a disease known as Beriberi. 3. Deficiency of Iron causes Anaemia. Which of the statements given above are correct?

Correct Option The correct option is (c) 2 and 3 only. Explanation Deficiency diseases are pathological conditions caused by the lack of essential nutrients-such as vitamins, minerals, proteins, or carbohydrates-in the diet over a prolonged period. They are not contagious and can usually be prevented or cured by consuming a balanced diet. Statement-wise Analysis - Statement 1 is Incorrect. Deficiency diseases are caused by the lack of nutrients over a long period, not by the intake of excess fat over a short period. Excess intake of fat typically leads to obesity or cardiovascular issues, which are lifestyle-related conditions, not deficiency diseases. - Statement 2 is Correct. Vitamin B1 (Thiamine) is essential for glucose metabolism and nerve function. Its deficiency leads to Beriberi, a condition characterized by weak muscles and very little energy to work. - Statement 3 is Correct. Iron is a critical mineral required for the formation of hemoglobin, the oxygen-carrying pigment in red blood cells. A deficiency in iron leads to Anaemia, which results in general weakness and fatigue. Key Takeaway Deficiency diseases arise from the prolonged absence of specific nutrients in the diet. Common examples include Scurvy (Vitamin C), Rickets (Vitamin D), Beriberi (Vitamin B1), and Anaemia (Iron).

NCERT Class 6 Science — Chapter 2: Components of food

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Consider the following statements about deficiency diseases:

Deficiency diseases are those caused by the intake of excess fat over a short period.
Deficiency of Vitamin B1 causes a disease known as Beriberi.
Deficiency of Iron causes Anaemia.

Which of the statements given above are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Deficiency diseases are pathological conditions caused by the lack of essential nutrients-such as vitamins, minerals, proteins, or carbohydrates-in the diet over a prolonged period. They are not contagious and can usually be prevented or cured by consuming a balanced diet.

Statement-wise Analysis

Statement 1 is Incorrect. Deficiency diseases are caused by the lack of nutrients over a long period, not by the intake of excess fat over a short period. Excess intake of fat typically leads to obesity or cardiovascular issues, which are lifestyle-related conditions, not deficiency diseases.
Statement 2 is Correct. Vitamin B1 (Thiamine) is essential for glucose metabolism and nerve function. Its deficiency leads to Beriberi, a condition characterized by weak muscles and very little energy to work.
Statement 3 is Correct. Iron is a critical mineral required for the formation of hemoglobin, the oxygen-carrying pigment in red blood cells. A deficiency in iron leads to Anaemia, which results in general weakness and fatigue.

Key Takeaway

Deficiency diseases arise from the prolonged absence of specific nutrients in the diet. Common examples include Scurvy (Vitamin C), Rickets (Vitamin D), Beriberi (Vitamin B1), and Anaemia (Iron).

Your note

More from Chapter 2: Components of food

Consider the following statements regarding the testing of nutrients in food items: 1. A blue-black colour produced after adding dilute iodine solution indicates the presence of starch. 2. A violet colour produced after adding copper sulphate and caustic soda indicates the presence of fats. Which of the statements given above is/are correct?

easy

Consider the following statements regarding the preparation of solutions for nutrient testing: 1. A dilute solution of iodine is prepared by dissolving copper sulphate in water. 2. Copper sulphate solution is prepared by dissolving copper sulphate in water. 3. Caustic soda solution is prepared by dissolving caustic soda in water. Which of the statements given above are correct?

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With reference to the test for fats in food items, consider the following statements: 1. An oily patch on paper generally indicates the presence of fat in the food item. 2. If a food item contains water, it will never leave a wet patch on the paper. 3. The paper should be heated strongly to check for the presence of starch. Which of the statements given above is/are correct?

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Consider the following statements about dietary fibres: 1. Dietary fibres are also known as roughage. 2. They are mainly provided by animal products like milk and eggs. 3. They do not provide any nutrient to our body. Which of the statements given above are correct?

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With reference to the role of water in the body, consider the following statements: 1. Water prevents the body from absorbing nutrients from food. 2. It helps in throwing out some wastes from the body as urine and sweat. 3. The body gets water from liquids drunk as well as from cooked food items. Which of the statements given above are correct?

easy

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Correct Option

The correct option is (c) 2 and 3 only.

Explanation

Statement-wise Analysis

Statement 1 is Incorrect. Deficiency diseases are caused by the lack of nutrients over a long period, not by the intake of excess fat over a short period. Excess intake of fat typically leads to obesity or cardiovascular issues, which are lifestyle-related conditions, not deficiency diseases.
Statement 2 is Correct. Vitamin B1 (Thiamine) is essential for glucose metabolism and nerve function. Its deficiency leads to Beriberi, a condition characterized by weak muscles and very little energy to work.
Statement 3 is Correct. Iron is a critical mineral required for the formation of hemoglobin, the oxygen-carrying pigment in red blood cells. A deficiency in iron leads to Anaemia, which results in general weakness and fatigue.

Key Takeaway

Deficiency diseases arise from the prolonged absence of specific nutrients in the diet. Common examples include Scurvy (Vitamin C), Rickets (Vitamin D), Beriberi (Vitamin B1), and Anaemia (Iron).