NCERT Solutions Curiosity Chapter 3 Activity 3.9: Let us compare — — Potato wafers versus roasted chana

Book page 52 & 53 Updated on2026-09-05

Q1.
Read the nutritional information given below for a packet of potato wafers and a packet of roasted chana shown here. Based on the nutritional information on the food packets given above, which food would you choose? Why?
Answer

I would choose the roasted chana. Compare the two labels line by line — both are printed for the same quantity, 100 g, so the numbers can be compared directly.

Per 100 gPotato wafersRoasted chanaWhat it means
Energy536 kcal355 kcalWafers give about 181 kcal more, mostly from fat
Fats35.0 g6.26 gWafers have more than five times the fat
Carbohydrates53.0 g58.58 gNearly the same
Proteins7.0 g18.64 gChana has about 2.7 times the protein
Dietary fibre4.8 g16.8 gChana has about 3.5 times the fibre

Reasons for choosing roasted chana:

  1. It gives much more protein (18.64 g against 7.0 g) — the body-building nutrient a growing child needs.
  2. It gives much more dietary fibre (16.8 g against 4.8 g), which keeps digestion smooth.
  3. It has far less fat (6.26 g against 35.0 g) and fewer calories, so it does not lead to obesity.
  4. Chana also supplies iron and other minerals, and it is cheaper.
How to read any food label: first check that both labels are for the same weight. Then look for high protein and fibre and low fat and sugar. High energy with low protein and low fibre is the signature of junk food.
Q2.
Which of the two foods you studied in Activity 3.9 could be labelled as junk food?
Answer

The potato wafers are junk food.

They fit the book's definition exactly: junk foods are foods that have high calories due to high sugar and fat content, and contain very low amounts of proteins, minerals, vitamins and dietary fibres. The wafers pack 536 kcal and 35 g of fat into 100 g, but only 7 g of protein and 4.8 g of fibre.

  • Other examples given in the book: candy bars and carbonated drinks.
  • Consuming such foods frequently is not good, as they make a person obese, and such a person may suffer from several health problems.
Healthy swaps for a school break: roasted chana instead of wafers; a banana or guava instead of a candy bar; nimbu paani, buttermilk or plain water instead of a carbonated drink; murmura or roasted makhana instead of packet snacks.
Remember Dr Poshita: ‘Health is the Ultimate Wealth.’ Eating a balanced diet and avoiding junk food contribute towards a healthy body, and good health is essential for leading a happy life.
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