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

Sample Questions

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

Q.1

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?

Q.2

Which of the following would stop evolution by natural selection from occurring?

Q.3

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.4

Choose the correct option and complete the following sentence:

Sexual reproduction causes genetic variation because of _____________.

  1. blending of genes
  2. chromosomal changes
  3. shuffling of genes

Q.5

Identify the reaction which takes place at the anode when an aqueous solution of CuSO4 is electrolysed using platinum as anode:

Q.6

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.7

What happens when 1 mole of ethyne undergoes complete combustion?

Q.8

Identify the phenomenon by which a new set of the population is formed from the change in the frequency of some genes:

Q.9

Choose the correct option and complete the following sentence:

An electric motor consists of ____________.
I. rectangular coil of insulated copper wire
II. two poles of a magnetic field
III. split rings
IV. conducting brushes

Q.10

Which of the following metals cannot be refined by electrolytic refining?

(i) Au
(ii) Cu
(iii) Na
(iv) K

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:

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

Answers to Sample Questions from CREST Olympiads:

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

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