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

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

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

Q.2

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

Assertion (A): Children necessarily possess the same blood group as either of the parents.

Reason (R): The gene corresponding to the blood group has three alleles.

Q.3

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.4

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

Q.5

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.6

Which of the following statements is correct regarding the grafting process?

Q.7

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.8

Match the entries of Column I with those of Column II:

 

Column I

 

Column II

1.    

Stomata

a.    

Anaerobic respiration

2.    

Mangrove trees

b.    

Intake of CO2

3.    

Wood stem

c.     

Pneumatophores

4.    

Yeast

d.    

Lenticels

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

Match column I with column II and select the correct answer using the codes given below:

 

Column I

 

Column II

1.    

Element with a smallest atomic radius

a.    

Ca

2.    

Element with the largest atomic radius

b.    

F

3.    

Element with the highest electron affinity

c.    

Cl

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:

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

Answers to Sample Questions from CREST Olympiads:

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

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