Chemistry 9th Chap 15 : Topic 1 - Maryam Publications

Chemistry Chapter 15 : Topic 1

Nutrition and Healthy Eating

1 / 20

A student feels constantly tired, loses weight, and has low concentration in class. The doctor says his diet lacks essential nutrients. Which statement best explains the importance of nutrition in this case?

A) Nutrition only helps in increasing body weight, not energy levels.

B) Nutrition is only important during illness, not in daily life.

C) Nutrition provides energy and essential substances required for proper growth and body functioning.

D) Nutrition only affects physical appearance, not internal health.

2 / 20

A balanced diet is described as a diet that contains all nutrients in correct proportions according to body needs. Which of the following best explains why a balanced diet is necessary?

A) It replaces the need for drinking water.

B) It increases appetite and food intake only.

C) It prevents all diseases permanently without exercise.

D) It ensures the body gets energy and nutrients for growth, repair, and immunity.

3 / 20

Which statement correctly explains why carbohydrates are considered the main source of energy in a healthy diet?

A) They are stored as vitamins in the body.

B) They build muscles and repair tissues.

C) They provide quick and primary energy for body activities.

D) They regulate hormones in the body.

4 / 20

A person consumes excessive junk food and very few fruits and vegetables. Which health issue is most likely to occur?

A) Nutrient deficiency and weak immune system

B) Increased energy and better digestion

C) Improved immunity and strong bones

D) Balanced nutrition and proper growth

5 / 20

Proteins are called body-building nutrients because they:

A) Store energy for long-term use only

B) Provide immediate energy for physical activity

C) Control body temperature

D) Help in growth and repair of body tissues

6 / 20

Which statement best describes the role of vitamins in human nutrition?

A) They provide bulk energy like carbohydrates.

B) They replace minerals in the body.

C) They act as structural components of bones only.

D) They are required in small amounts but are essential for proper body functions.

7 / 20

A student eating only rice and avoiding fruits, vegetables, and proteins is most likely to suffer from:

A) Excess energy production

B) Improved immunity

C) Balanced nutrition

D) Nutritional deficiency diseases

8 / 20

Which of the following best explains the importance of water in nutrition?

A) It builds muscles and bones.

B) It provides energy like fats.

C) It acts as a storage form of carbohydrates.

D) It helps in digestion, transport of nutrients, and temperature control.

9 / 20

Fats are important in a healthy diet because they:

A) Store energy and provide insulation to the body

B) Replace vitamins in the body

C) Provide no energy and are only waste materials

D) Help in breaking down proteins only

10 / 20

Which statement best defines malnutrition?

A) A condition caused by lack, excess, or imbalance of nutrients

B) Regular intake of all nutrients in correct amounts

C) Eating only expensive food items

D) Eating too much balanced diet

11 / 20

Why is fiber (roughage) important in a healthy diet?

A) It helps in digestion and prevents constipation.

B) It acts as a vitamin substitute.

C) It builds body tissues.

D) It provides energy for muscles.

12 / 20

A diet high in sugar and fats but low in nutrients is harmful because it:

A) Strengthens bones and teeth

B) Provides all essential nutrients

C) Improves immunity

D) Leads to obesity and nutrient deficiency

13 / 20

Which of the following best describes “healthy eating”?

A) Eating whenever food is available without restriction.

B) Eating a variety of foods in proper proportions to maintain health.

C) Eating only fruits and avoiding all fats.

D) Eating only fast food in large amounts.

14 / 20

Minerals like calcium and iron are important in nutrition because they:

A) Replace water in cells

B) Help in body structure and oxygen transport

C) Act as carbohydrates in the body

D) Provide energy for daily activities

15 / 20

Which situation best shows good nutritional practice?

A) Eating only when feeling extremely hungry

B) Including fruits, vegetables, proteins, and grains in meals

C) Eating only one type of food every day

D) Skipping breakfast daily

16 / 20

Why is nutrition considered essential for growth and development?

A) It prevents food from spoiling.

B) It reduces the need for sleep.

C) It supplies materials required for body formation and energy.

D) It only improves taste of food.

17 / 20

Which nutrient deficiency is most likely to cause weak bones in children?

A) Sugar

B) Vitamin C

C) Water

D) Calcium

18 / 20

A person who eats a balanced diet regularly is less likely to suffer from diseases because:

A) It strengthens the immune system and maintains body functions.

B) It eliminates the need for exercise.

C) It replaces medical treatment.

D) Balanced diet destroys all bacteria directly.

19 / 20

Which statement correctly explains the relationship between nutrition and energy?

A) Food nutrients are broken down to release energy needed for life processes.

B) Nutrients reduce energy production in the body.

C) Only water provides energy to the body.

D) Energy is produced only during sleep.

20 / 20

Why is variety important in daily diet planning?

A) It increases food cost unnecessarily.

B) It reduces digestion efficiency.

C) It ensures intake of all essential nutrients required by the body.

D) It replaces the need for water intake.

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