UP Board Class 12 Home Science Question Paper 2026 PDF with Solutions - Available

Proteins are called body-building nutrients because they help in growth and repair of body tissues.

Step 1: Analyze the options.

- Carbohydrates — Energy giving
- Proteins — Body building ✔
- Fats — Energy storage
- Vitamins — Protective nutrients


Step 2: Conclusion.

Thus proteins are responsible for body building.



Final Answer: \[ \boxed{(B) \, Proteins} \] Quick Tip: Proteins = Growth + Repair of tissues

Vitamin C deficiency leads to scurvy, which causes bleeding gums and weakness.

Step 1: Analyze the options.

- Rickets — Vitamin D deficiency
- Scurvy — Vitamin C deficiency ✔
- Night blindness — Vitamin A deficiency
- Beriberi — Vitamin B₁ deficiency


Step 2: Conclusion.

Hence option (B) is correct.



Final Answer: \[ \boxed{(B)} \] Quick Tip: Citrus fruits are rich in Vitamin C

Steaming uses minimal water and heat exposure, preserving most nutrients.


Final Answer: \[ \boxed{(C)} \] Quick Tip: Steaming = healthiest cooking method

Cotton is a natural plant fiber obtained from the cotton plant.


Final Answer: \[ \boxed{(C)} \] Quick Tip: Cotton = Plant fiber

A balanced diet provides all essential nutrients in correct amounts.


Final Answer: \[ \boxed{(C)} \] Quick Tip: Balanced diet = Complete nutrition

A balanced diet is one that contains all essential nutrients — carbohydrates, proteins, fats, vitamins, minerals, roughage, and water — in proper proportions according to the body’s needs.

It is important because it ensures proper growth, development, and maintenance of body tissues. A balanced diet strengthens the immune system, preventing diseases and infections. It provides energy for daily activities and supports mental well-being. It also helps maintain ideal body weight and prevents deficiency diseases such as anemia and rickets. Quick Tip: Balanced diet = Healthy body + Strong immunity

Carbohydrates are the main source of energy for the body. They fuel brain function and physical activities. Excess carbohydrates are stored as glycogen in muscles and liver.

Fats are concentrated sources of energy. They help in insulation of the body, protect vital organs, and assist in absorption of fat-soluble vitamins (A, D, E, K). Quick Tip: Carbohydrates = Immediate energy Fats = Stored energy

Common cooking methods include boiling, steaming, frying, roasting, and baking. Boiling cooks food in water, while steaming cooks food using steam and preserves nutrients. Frying involves cooking food in oil at high temperature. Roasting and baking use dry heat to cook food evenly.

Each method affects taste, texture, and nutrient content differently. Quick Tip: Steaming and baking are healthier than frying

Fibers are classified as natural and synthetic. Natural fibers include cotton, wool, and silk. Cotton is used for summer clothing, wool for winter wear, and silk for special garments.

Synthetic fibers such as nylon and polyester are strong, durable, and wrinkle-resistant. They are widely used in sportswear and industrial fabrics. Quick Tip: Natural fibers = Comfortable Synthetic fibers = Durable

Kitchen hygiene is essential to prevent food contamination and food-borne diseases. Clean utensils, fresh ingredients, and proper storage maintain food safety. Washing hands before cooking prevents transfer of harmful bacteria. Clean surroundings also reduce the risk of pests and infections.

Maintaining hygiene ensures safe, nutritious, and healthy food for the family. Quick Tip: Clean kitchen = Safe food