Nutritional Science Practice Questions
19 free Nutritional Science practice questions for the Static GK. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
Which nutrient is the body's main immediate source of energy?
- A Carbohydrates
- B Saturated Fats
- C Minerals
- D Water
Correct answer: Carbohydrates
Carbohydrates are broken down into glucose, which is used by cells for quick energy. They are especially important for brain function and physical activity.
Which macronutrient is mainly needed for growth, tissue repair, and enzyme production?
- A Protein
- B Water
- C Sodium
- D Vitamin C
Correct answer: Protein
Proteins are made of amino acids and are essential for building and repairing body tissues. They also help form enzymes, hormones, and antibodies.
Which vitamin is produced in the skin when exposed to sunlight?
- A Vitamin A
- B Vitamin B12
- C Vitamin D
- D Vitamin K
Correct answer: Vitamin D
Vitamin D can be synthesized in the skin when it is exposed to sunlight. It helps the body absorb calcium and supports bone health.
Which mineral is most important for healthy bones and teeth?
- A Iron
- B Calcium
- C Iodine
- D Fluoride
Correct answer: Calcium
Calcium is a major mineral found in bones and teeth. It also plays a role in muscle contraction, nerve signaling, and blood clotting.
Deficiency of iron commonly leads to which condition?
- A Scurvy
- B Anaemia
- C Rickets
- D Goitre
Correct answer: Anaemia
Iron is needed to make haemoglobin, the oxygen-carrying protein in red blood cells. Low iron levels can cause iron-deficiency anaemia.
Which disease is commonly linked to vitamin D deficiency in children?
- A Rickets
- B Beriberi
- C Pellagra
- D Anaemia
Correct answer: Rickets
Rickets occurs when children's bones become soft and weak due to vitamin D deficiency. Vitamin D helps in calcium absorption and bone mineralization.
Which vitamin deficiency is associated with night blindness?
- A Vitamin A
- B Vitamin C
- C Vitamin E
- D Vitamin K
Correct answer: Vitamin A
Vitamin A is essential for normal vision, especially in dim light. Its deficiency can cause night blindness and other eye problems.
Which of the following is a fat-soluble vitamin?
- A Vitamin C
- B Vitamin B12
- C Vitamin D
- D Vitamin B1
Correct answer: Vitamin D
Vitamin D is a fat-soluble vitamin, along with vitamins A, E, and K. Fat-soluble vitamins are stored in body fat and the liver.
Which of the following is a water-soluble vitamin?
- A Vitamin A
- B Vitamin D
- C Vitamin C
- D Vitamin K
Correct answer: Vitamin C
Vitamin C is water-soluble and is not stored in large amounts in the body. Regular intake through food is needed to maintain healthy levels.
Which nutrient is essential for preventing dehydration and helping regulate body temperature?
- A Water
- B Protein
- C Fat
- D Calcium
Correct answer: Water
Water is essential for hydration, temperature regulation, digestion, and transport of nutrients. Even mild dehydration can affect body function.
Which type of dietary fibre helps improve bowel movement and prevent constipation?
- A Insoluble fibre
- B Trans fatty acids
- C Cholesterol
- D Saturated fat
Correct answer: Insoluble fibre
Insoluble fibre adds bulk to stool and helps food move through the digestive tract. Whole grains, vegetables, and bran are common sources.
Which mineral is needed for the production of thyroid hormones?
- A Sodium
- B Magnesium
- C Fluoride
- D Iodine
Correct answer: Iodine
Iodine is required for making thyroid hormones. Deficiency can lead to enlargement of the thyroid gland, commonly called goitre.
Which condition is commonly caused by iodine deficiency?
- A Scurvy
- B Anaemia
- C Beriberi
- D Goitre
Correct answer: Goitre
Goitre is an enlargement of the thyroid gland often caused by iodine deficiency. Iodized salt is commonly used to prevent this condition.
Which nutrient provides the highest energy per gram?
- A Protein
- B Carbohydrate
- C Dietary Fat
- D Water
Correct answer: Dietary Fat
Dietary fat provides about 9 calories per gram, which is more than carbohydrates and proteins. It also helps absorb fat-soluble vitamins.
Which of the following is considered a complete protein source?
- A Sugar
- B Salt
- C Butter
- D Eggs
Correct answer: Eggs
A complete protein contains all essential amino acids in adequate amounts. Eggs are commonly considered a high-quality complete protein source.
Which vitamin plays an important role in blood clotting?
- A Vitamin C
- B Vitamin B6
- C Vitamin D
- D Vitamin K
Correct answer: Vitamin K
Vitamin K is needed for the production of clotting factors in the blood. A deficiency can increase the risk of excessive bleeding.
Which B vitamin deficiency causes beriberi?
- A Vitamin B2
- B Vitamin B6
- C Vitamin B12
- D Vitamin B1
Correct answer: Vitamin B1
Beriberi is caused by a deficiency of vitamin B1, also called thiamine. It can affect the nervous system and the heart.
Which of the following best describes a balanced diet?
- A A diet that contains only fruits and excludes all other food groups
- B A diet that provides all essential nutrients in proper amounts
- C A diet that completely avoids all fats, including healthy ones
- D A diet made up only of protein-rich foods with no other nutrients
Correct answer: A diet that provides all essential nutrients in proper amounts
A balanced diet includes carbohydrates, proteins, fats, vitamins, minerals, fibre, and water in suitable amounts. It supports growth, energy, immunity, and overall health.
Which type of fat is generally considered healthier for heart health when used in moderation?
- A Trans fat
- B Excess saturated fat
- C Unsaturated fat
- D Hydrogenated fat
Correct answer: Unsaturated fat
Unsaturated fats, such as those found in nuts, seeds, and many vegetable oils, are generally better for heart health. Trans fats and excess saturated fats are linked with higher cardiovascular risk.