CREST Science Olympiad Class 10 Sample Paper

Help your child excel in the Science Olympiad with the Class 10 sample paper. It's a great tool to practise important topics and understand the exam structure.

What's Included?

  • MCQs covering key concepts from the Class 10 science syllabus.
  • Two sections: Practical Science & Achiever's Section.
  • Answer key with detailed explanations for better understanding.

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Syllabus:

Section 1: Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and its Compounds, Periodic Classification of Elements, Life Processes, Reproduction in Organisms, Heredity and Evolution, Light-Reflection and Refraction, Human Eye and Colourful World, Electricity, Magnetic Effects of Electric Current, Sources of Energy, Our Environment and its Management.

Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

Fill in the blank:

When Ca(NO3)2 is heated, it gives CaO, NO2(g) and O2(g). The correct number of moles of Ca(NO3)2, CaO, NO2(g) and O2(g) are present in the reaction are respectively _________.

Q.2

When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while.

Identify the correct reason for the above statement:

Q.3

Study the circuit given below and determine the effective resistance (in Ω) between A and B:



Q.4

Identify the correct sequence of fractions obtained when petroleum is subjected to fractional distillation:

  1. Lubricating oil
  2. Petrol
  3. Petroleum ether
  4. Diesel oil

Q.5

Fill in the blank:

Bronze is often used to make statues and medals whereas brass is used in making utensils, scientific apparatus and cartridges. Both brass and bronze are copper-containing alloys, yet they differ in their chemical composition for additionally containing ___________.

Q.6

Which of the following equations is the summary of photosynthesis?

Q.7

In the following question, an assertion and a reason are given. Choose the correct option:

Assertion: In a simple electric circuit, the positive terminal of the battery is a point of lowest potential.

Reason: The electronic current flow in a circuit is from a point of highest potential to a point of lowest potential.

Q.8

In the following question, an assertion and a reason are given. Choose the correct option:

Assertion: The magnetic field produced by a current-carrying solenoid is independent of its length and cross-section area.

Reason: The magnetic field inside the solenoid is uniform.

Q.9

In the following question, an assertion and the reason are given. Choose the correct option:

Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R): In a group, the atomic radii generally increase from top to bottom.

Q.10

When SO2 is passed through a solution of K2Cr2O7 turns green. Which of the following correctly shows the change in the oxidation state of chromium and sulphur?

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:

Q.1bQ.2dQ.3aQ.4cQ.5aQ.6cQ.7cQ.8bQ.9dQ.10b

Answers to Sample Questions from CREST Olympiads:

Q.1 : b | Q.2 : d | Q.3 : a | Q.4 : c | Q.5 : a | Q.6 : c | Q.7 : c | Q.8 : b | Q.9 : d | Q.10 : b

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