Biology · General Awareness

Nutrition and Food Sources

2,738 Questions

Nutrition and Food Sources questions test your knowledge of vitamins, dietary minerals, carbohydrates, and specialized dietary principles. This topic is commonly asked in railway, SSC, and UPSC exams. Review these questions to master the biological and health aspects of human nutrition.

Vitamins and mineralsDietary fiber sourcesMacronutrient functionsNaturopathic diet principlesOmega-3 fatty acids

Nutrition and Food Sources Questions

Multiple choice

The bitter or sharp taste of unripe fruits is due to high concentration of

  1. starch

  2. organic acids

  3. carotenoids

  4. lipids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unripe fruits contain high concentrations of organic acids like citric acid (citrus), malic acid (apples), and oxalic acid. These acids decrease as fruits ripen and convert to sugars. Starch is converted to sugars during ripening, not acids.

Multiple choice

The bitter or sharp taste of unripe fruits is due to high concentration of

  1. starch

  2. organic acids

  3. carotenoids

  4. lipids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unripe fruits contain high concentrations of organic acids such as citric acid, malic acid, and oxalic acid. As fruits ripen, these acids are metabolized or converted to sugars, reducing the sour taste. This is why unripe fruits taste sharp or bitter while ripe ones taste sweet. Starch, carotenoids, and lipids don't produce this characteristic sour taste.

Multiple choice

Which one of the following food is most nutritious?

  1. Bread

  2. Sugar

  3. Coffee

  4. Cheese
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cheese is the most nutritious among these options as it contains complete proteins, calcium, fats, and various vitamins. Bread provides mainly carbohydrates, sugar is empty calories, and coffee has minimal nutritional value.

Multiple choice

Which of the following students is/are taking a balanced diet? Student A – Bananas, milk, pulses and groundnuts Student B – Apples, pulses, soyabeans and beans Student C – Pulses, groundnuts, peas and beans Student D – Groundnuts, walnuts, jaggery and cashew nuts

  1. Students A and C

  2. Students B and D

  3. Student A

  4. Student D
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The diet of student ‘A’ contains adequate amount of all the essential nutrients and is considered as a balanced diet.

Multiple choice

Doctors advise that excess intake of tomatoes, eggs, milk, cabbage, etc. should be avoided in case of persons with kidney stones, bladder stones, etc. This is done to prevent the formation of crystals of

  1. calcium phosphate.

  2. calcium oxalate.

  3. calcium chloride.

  4. calcium sulphate.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Kidney stones are generally made up of calcium oxalate and due to imbalance of fluids. They occur when there is too much calcium in the urine.

Multiple choice

Iron which is necessary for the body has a rich source in

  1. Mutton

  2. Curd

  3. Green leafy vegetables

  4. Potato
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Green leafy vegetables (Option C) are indeed rich sources of iron, which is essential for hemoglobin formation and preventing anemia. Options like mutton, curd, and potato are not as iron-dense as leafy greens such as spinach, kale, and fenugreek.

Multiple choice

In the passage above, the main idea is to

Directions: Read the following passage and answer the question that follows.

Not everybody has a taste for water, but we all need it to ensure that our bodies continue functioning properly. If you want to drink more water, but aren't crazy about the taste (or lack thereof), here are some tips that can make it more enjoyable:
1. Add fresh fruit. Citrus fruits, such as lemons, limes, and oranges, are classic water enhancers, but other fruit flavors might also tempt your taste buds. Try crushing fresh raspberries or watermelon into your water, or adding strawberry slices. Cucumber and fresh mint are refreshing flavors as well — especially in summer.
2. Use juice. Any fruit juice can be a good base flavor for water, but tart juices, like cranberry, pomegranate, grape, and apple, are especially delicious. Go for juices that are all natural, with no added sugars. And remember: Fruits and their juices don't just taste good — they contain vitamins and antioxidants that can benefit your health too.

  1. develop a taste for water

  2. eat fruits only

  3. combine fruits with water only

  4. drink flavoured water only
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The main idea of the passage is to develop a taste for water and many methods are given to do so.

Multiple choice

Which of the following foods is rich in carbohydrates?

  1. Rice

  2. Coconut

  3. Egg white

  4. Papaya

  5. Milk
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbohydrates change into sugar in human body that burn with oxygen in cells of our body and give us energy. So, carbohydrates are called energy giving foods. Eg. rice, wheat and maize.

Multiple choice

Directions: The following question consists of certain statements. You have to select the option representing the most logical sequencing of the given statements.

A. A balanced diet is necessary for good health. B. However, a balanced diet does not consist of vitamins only. C. Vitamins prevent deficiency diseases. D. Proteins too are important ingredient in a balanced diet.
E. Regular consumption of vitamins is essential. F. Vitamins are important ingredients of a balanced diet.

  1. BCD

  2. ABC

  3. CEF

  4. FBD
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Option (3) CEF C → Vitamins prevent deficiency diseases. E → Regular consumption of vitamins is essential. F → Vitamins are important ingredients of a balanced diet. Though a new concept 'balanced diet' has been introduced in sentence F but logically it is related to first two sentences by virtue of keyword vitamin existing in all three sentences. On the other hand, for option (4) FBD F → Vitamins are important ingredients of balanced diet. B → However, a balanced diet does not consist of vitamins only. D → Proteins too are ingredients in a balanced diet. Though these three sentences has a keyword 'Balanced Diet' relating but a specific example of protein as important part of the balanced diet is too big of consumption, than one we did in previous case. This implies option (3) is the correct answer.