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

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

Assertion (A): Generally, the colour of indicators changes in a particular pH range.

Reason (R): Indicators are weak acids or weak bases and exhibit different colours in molecular form and ionic form.

Q.2

If I1 is the first ionization potential, I2 is the second ionization potential, I3 is the third ionization potential and I4 is the fourth ionization potential of an element, then which of the following has the least value?

Q.3

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

Assertion (A): In any food chain, the number of organisms in any trophic level should always be less than that in its previous trophic level.
Reason (R): Only 10 percent of total energy present in a trophic level is transferred to the next trophic level in any food chain.

Q.4

The formation of the ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

Q.5

Why shouldn't we light a candle in a closed room with people?

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

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

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

Q.8

Length and diameters of four wires of same material are given below. The resistance of which of the following wires will be minimum?

Q.9

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

Assertion: According to Döbereiner's, a group of three similar elements arranged in their increasing atomic weights show that the atomic weight of middle is equal to the arithmetic mean of the other two elements.

Reason: Atomic weight is equal to one-twelfth of the mass of a carbon atom.

Q.10

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

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:

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

Answers to Sample Questions from CREST Olympiads:

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

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