Science Full Practice Exam – Set 2 (Class 3)

What this worksheet covers

This is a 35-question practice worksheet on full practice exam — set 2 for Class 3, written to the pattern of the SOF National Science Olympiad (NSO). It carries 40 marks and is designed to be attempted in 60 minutes, split across three sections — Section 1 — Logical Reasoning, Section 2 — Science 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 full practice exam — set 2 at Class 3 level
• Working accurately against a time limit, as the real paper demands
• Section 1 — Logical Reasoning questions in the olympiad format
• Section 2 — Science 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 35 questions in this paper. All questions are compulsory.
2. 2Each question has four options (A), (B), (C) and (D). Exactly one option is correct.
3. 3Questions 1–30 carry 1 mark each. Questions 31–35 (Achievers Section) carry 2 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 Science Full Practice Exam – Set 2 (Class 3) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. What is the next number in the pattern? 2, 5, 8, 11, ____

   • A11
   • B12
   • C13correct
   • D14
   Solution: Each number is 3 more than the one before it: 2, 5, 8, 11.
   11 + 3 = 13.

2. 2. Which type of root system has many thin roots of about the same size, with no single thick main root?

   • ATap root
   • BFibrous rootcorrect
   • CStilt root
   • DRoot hair
   Solution: A fibrous root system has a bunch of thin roots of nearly equal size spreading out from the base of the stem. Wheat and grass have fibrous roots.

3. 3. Consider the following statements.(i) All plants need soil to grow.(ii) A cactus stores water in its thick stem to help it survive in the desert.(iii) Seeds need only sunlight to germinate, and do not need water.Which of the statements is/are correct?

   • A(i) only
   • B(iii) only
   • C(ii) onlycorrect
   • D(i) and (ii) only
   Solution: Statement (i) is incorrect, since some plants can grow in water culture or on other plants without any soil at all. Statement (ii) is correct, since the thick, fleshy stem of a cactus stores water for use during long dry spells. Statement (iii) is incorrect, since a germinating seed actually needs water and air, and many seeds sprout perfectly well underground in the dark. Hence only (ii) is correct.