Class 6 Components of Food MCQ with Answers

MCQs and Mock Test | NCERT - CBSE Chapter 2

Practice Class 6 Components of Food MCQs with answers.
Learn nutrients, balanced diet, deficiency diseases and food tests - with instant answers and performance report.

Score:
0
Time:
05:00

Quick Revision: Components of Food

  • Major Nutrients: Carbohydrates, proteins, fats, vitamins, minerals. Also dietary fibres (roughage) and water.
  • Carbohydrates & Fats: Energy-giving foods. Examples: rice, wheat, oil, ghee, butter.
  • Proteins: Body-building foods. Needed for growth and repair. Examples: pulses, eggs, meat, milk, soybean.
  • Vitamins: Protect against diseases. Vitamin A (eyesight), Vitamin C (immunity, healing), Vitamin D (bones), Vitamin B1 (energy).
  • Minerals: Essential for proper body function. Calcium (bones), Iron (blood), Iodine (thyroid).
  • Balanced Diet: Contains all nutrients in right quantities plus roughage and water.
  • Deficiency Diseases: Caused by lack of nutrients over long periods.
  • Test for Starch: Iodine solution turns blue-black.
  • Test for Protein: Copper sulphate + caustic soda gives violet colour.
  • Test for Fat: Food leaves an oily patch on paper.
  • Roughage (Dietary Fibres): Provided by plant products like whole grains, fruits, vegetables. Helps get rid of undigested food.
  • Water: Helps absorb nutrients and remove wastes. Found naturally in many foods.

Components of Food Class 6 Questions and Answers (FAQ)

What are the main components of food for Class 6 Science?
The main components (nutrients) of food are: Carbohydrates and Fats (energy-giving foods), Proteins (body-building foods for growth and repair), Vitamins and Minerals (protective foods that fight diseases), and Dietary Fibres/Roughage (aids digestion). Water is also an essential component. A balanced diet includes all these in the right proportions. Examples: rice, wheat for carbohydrates; pulses, eggs for proteins; fruits, vegetables for vitamins and minerals.
What are the tests to detect starch, protein, and fat in food?
There are three main food tests: (1) Test for Starch: Add a few drops of iodine solution to the food sample. A blue-black colour indicates starch is present. (2) Test for Protein: Add copper sulphate solution and caustic soda to the food. A violet colour indicates protein is present. (3) Test for Fat: Rub the food on a piece of paper. An oily patch on the paper indicates fat is present. These tests help identify nutrients in food samples.
What are deficiency diseases and their causes in Class 6 Science?
Deficiency diseases occur when a person lacks one or more nutrients over a long period. Common examples: Night blindness (Vitamin A deficiency - affects eyesight), Beri Beri (Vitamin B1 deficiency - weak muscles, nerve damage), Scurvy (Vitamin C deficiency - bleeding gums, slow wound healing), Rickets (Vitamin D deficiency - soft, bent bones in children), Anaemia (Iron deficiency - pale skin, weakness), and Goitre (Iodine deficiency - swollen neck/thyroid gland). A balanced diet prevents all these diseases.
What is a balanced diet and why is it important?
A balanced diet is a diet that contains all the necessary nutrients in the right proportions, along with adequate roughage (dietary fibres) and water. It includes carbohydrates, proteins, fats, vitamins, minerals, roughage, and water in correct quantities. A balanced diet is important because: (1) It promotes proper growth and development, (2) It keeps the body healthy and prevents deficiency diseases, (3) It provides the right amount of energy for daily activities, and (4) It strengthens the immune system to fight infections.
Why is roughage important even though it provides no nutrients?
Roughage, also known as dietary fibres, is important even though it does not provide any nutrients to the body because: (1) It helps get rid of undigested food from the body, (2) It prevents constipation by adding bulk to the food, (3) It helps in the smooth movement of food through the digestive system, (4) It prevents overeating by giving a feeling of fullness, and (5) It helps control blood sugar and cholesterol levels. Good sources of roughage are whole grains, pulses, fruits, and vegetables.

Chapter Summary: Components of Food

The major nutrients in our food are carbohydrates, proteins, fats, vitamins, and minerals. Carbohydrates and fats are energy-giving foods. Proteins are body-building foods needed for growth and repair. Vitamins and minerals protect the body from diseases and maintain good health. Dietary fibres (roughage) and water are also essential components of our diet.

A balanced diet contains all these nutrients in the right quantities, along with adequate roughage and water. Deficiency of one or more nutrients over a long period can cause deficiency diseases such as night blindness (Vitamin A), beriberi (Vitamin B1), scurvy (Vitamin C), rickets (Vitamin D), goiter (Iodine), and anaemia (Iron). The chapter also emphasizes proper cooking methods to preserve nutrients.

Useful Resources