CREST Science Olympiad Class 10 Sample Paper

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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

Which of the following equations is not an example of displacement reaction?

Q.2

What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of boron (At. mass: 10.8) from the reduction of BCl3 by hydrogen?

Q.3

Which of the statements given below are correct?

I. Ohm's law is not applicable at very low and very high temperature.
II. Ohm's law is applicable to the semiconductor.
III. Ohm's law is not applicable to electron tubes, discharge tubes and electrolytes.
IV. If a 24-volt battery is connected to a 6-ohm resistor, the current passing through the resistor is 4 A.

Q.4

An air bubble in a glass slab (μ = 3/2) is 6 cm deep when viewed from one face and 3 cm deep when viewed from the opposite face. Determine the thickness of the slab:

Q.5

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

Q.6

Which environmental hazard is not contributed by the combustion of fossil fuels?

Q.7

Which of the following statements about carbon is/are correct?

A. It has a small atomic size.
B. Its melting and boiling point is low as compared to other members of the group.
C. It shows the electropositive character.
D. It shows the maximum tendency of catenation.

Q.8

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.9

Match List I (Vegetative propagation type) with List II (Example):

Column I (Vegetative propagation type)

Column II (Example)

1.    

Tuber eye

a.    

Garlic

2.    

Bulb

b.    

Rose

3.    

Cutting

c.     

Potato

4.    

Plantlets at margins of leaves

d.    

Bryophyllum

Q.10

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 _________.

Your Score: 0/10

Answers to Sample Questions from CREST Olympiads:

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

Practicing sample papers for the CREST Science Olympiad for class 10 is the most effective way to achieve the highest possible score in the exams. Students learn to manage time and solve questions within the time limits by practicing sample papers. Science Olympiad previous years’ question papers for class 10 are considered to be the best means to know the variety and types of questions well that you might come across. Students willing to participate in the CREST Olympiad exams require to have a thorough understanding of the exam pattern which is only possible with regular practice of sample papers. CREST Olympiads makes available Science Olympiad previous year papers online for free download. 

Answers to Sample Questions from CREST Olympiads:

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

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