CREST Science Olympiad Class 10 Previous Year Papers

>>> Join CREST Olympiads WhatsApp Channel for latest updates. CREST Science Olympiad Previous Year Paper PDF for Class 10:

If your web browser doesn't have a PDF Plugin. Instead you can Click here to download the PDF

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 Paper Previous Year Paper Marking Scheme Free Study Material

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 statements correctly describes the concept of sustainable development? Planned growth with minimum damage to the environment Growth irrespective of the extent of damage caused to the environment Stopping all developmental work to conserve the environment Growth that is acceptable to all the stakeholders
	a) i and iv		b) ii and iii
	c) ii and iv		d) iii and iv

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?
	a) 22.4 L		b) 44.8 L
	c) 67.2 L		d) 89.6 L

Q.3	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
	a) 1 – c, 2 – a, 3 – d, 4 – b		b) 1 – c, 2 – a, 3 – b, 4 – d
	c) 1 – a, 2 – b, 3 – d, 4 – c		d) 1 – b, 2 – d, 3 – c, 4 – a

Q.4	When current flows in a long straight solenoid, north and south poles are created at the two ends. Which of the following statements is/are correct?
	a) The field lines inside the solenoid are in the form of straight lines which indicate that the magnetic field is the same at all points inside the solenoid.		b) The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron when placed inside the coil.
	c) The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet.		d) Both a and b

Q.5	Choose the correct option and complete the following sentence: Sexual reproduction causes genetic variation because of _____________. blending of genes chromosomal changes shuffling of genes
	a) Only 1		b) Only 2
	c) Only 3		d) All of the above

Q.6	Fill in the blank: When a ray of light falls on a transparent glass plate, a part of it is reflected and a part is refracted. The reflected and refracted rays can be perpendicular to each other for ____________.
	a) angle of incidence equal to 90o		b) angle of incidence equal to zero
	c) only one angle of incidence		d) more than one angle of incidence

Q.7	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
	a) 1 – c, 2 – b, 3 – a		b) 1 – b, 2 – a, 3 – c
	c) 1 – a, 2 – b, 3 – c		d) 1 – a, 2 – c, 3 – b

Q.8	Which of the following statements is correct regarding the grafting process?
	a) The rooted plant that is cut in a slanting manner is known as a scion.		b) The part of a stem that is cut in a slanting way is called stock.
	c) This is a natural method of vegetative reproduction.		d) Grafting is practised for mango and citrus plants.

Q.9	In the following question, an assertion and a reason are given. Choose the correct option: Assertion (A): A person, who has suffered from smallpox can be recommended for providing nursing care to the victims of smallpox than the person who hadn't suffered from smallpox. Reason (R): The immune system of the person who had suffered from smallpox remembers the microbes causing smallpox and responds vigorously on the next encounter.
	a) Both (A) and (R) are true and (R) is the correct explanation of (A)		b) Both (A) and (R) are true, but (R) is not the correct explanation of (A)
	c) (A) is true, but (R) is false		d) Both (A) and (R) are false

Q.10	It is possible to measure the passage of 50 electrons per sec with a certain sensitive device. This corresponds to a current of:
	a) 8 x 10-18 A		b) 1.6 x 10-20 A
	c) 8 x 10-20 A		d) 1.6 x 10-19 A

Your Score: 0/10

Students can find the most recent CREST Science Olympiad previous year paper pdf for class 10 on this page. The pdf is easily downloadable & answer key for all the questions is also provided on the last page.

CREST Science Olympiad previous year papers become quite useful while preparing for the CREST Science Olympiad exam. Below are some advantages of referring to the previous year papers -

1. Students get to understand the types of questions that come in the CREST Science Olympiad exam.
2. Practicing previous years’ papers help students to get to know their strengths and weaknesses.
3. Students become capable of effectively managing their time in the exam by practicing previous years' papers multiple times.

Additional Preparation Resources

Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 10 -

1. CREST Science Worksheets Package for class 10 - It is a package of 5 worksheets. The worksheets are in the same pattern as the previous year paper. Hence, very useful for preparation. Existing users can purchase additional practice worksheets by following these steps: Login at https://www.crestolympiads.com/login -> Dashboard -> Additional Practice -> Buy & new users can visit https://www.crestolympiads.com/registration
2. CREST Science Olympiad book for class 10 - The book covers topic-wise reading material, chapter-wise practice questions with answer key & contains the previous year paper. The book is available in both physical and pdf formats. Proceed now to purchase the Olympiad book. Also, students can view & download the first chapter of the Science Olympiad book for class 10 for free.

Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 10.