Food and Nutrition (Class 3)

What this worksheet covers

This is a fifteen-question practice worksheet on food and nutrition for Class 3, written to the pattern of the SOF National Science Olympiad (NSO). It carries 21 marks and is designed to be attempted in 40 minutes, split across three sections — Scientific Reasoning, Applying What You Know and Achievers Section. Every question is multiple choice with exactly one correct option, and every one comes with a fully worked solution rather than just an answer key — so a child who gets one wrong can see where the reasoning went astray instead of only learning that it did.

Skills your child practises

• Applied problem-solving on food and nutrition at Class 3 level
• Working accurately against a time limit, as the real paper demands
• Scientific Reasoning questions in the olympiad format
• Applying What You Know questions in the olympiad format
• Achievers Section questions in the olympiad format
• Reading worked solutions to find the step that went wrong

How to use it

1. 1There are 15 questions in this worksheet. All questions are compulsory.
2. 2Each question has four options (A), (B), (C) and (D). Exactly one option is correct.
3. 3Questions 1–12 carry 1 mark each. Questions 13–15 (Achievers Section) carry 3 marks each.
4. 4There is no negative marking. Study every diagram and table carefully.

Sample questions from this worksheet

A preview of what's inside Food and Nutrition (Class 3) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. Foods that give us energy are rich in _______.

   • ACarbohydratescorrect
   • BProteins
   • CVitamins
   • DWater
   Solution: Carbohydrates such as rice, wheat, potato and sugar are broken down quickly to release energy, so they form the largest part of most meals.

2. 2. A few drops of iodine solution are put on a piece of bread and it turns blue-black. What does this show?

   • ABread contains fat
   • BBread contains protein
   • CBread contains starchcorrect
   • DBread contains vitamin C
   Solution: Iodine solution turns from brown to blue-black wherever starch is present. This is the standard test for starch, which is a carbohydrate.

3. 3. Consider the following statements.(i) A balanced diet is exactly the same for every person.(ii) Drinking plenty of clean water is an important part of a healthy diet.(iii) Junk food such as chips and cold drinks gives plenty of energy but very few nutrients.Which of the statements is/are correct?

   • A(i) and (ii) only
   • B(ii) and (iii) onlycorrect
   • C(i) and (iii) only
   • DAll three
   Solution: Statement (i) is false — a growing child, a labourer and an elderly person all need different amounts of food, so a balanced diet differs from person to person. Statements (ii) and (iii) are both true. Hence (ii) and (iii).