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
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.2
Study the circuit given below and determine the effective resistance (in Ω) between A and B:
Q.3
It is possible to measure the passage of 50 electrons per sec with a certain sensitive device. This corresponds to a current of:
Q.4
When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while.
Identify the correct reason for the above statement:
Q.5
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 ____________.
Q.6
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
Q.7
Which of the following metals cannot be refined by electrolytic refining?
(i) Au (ii) Cu (iii) Na (iv) K
Q.8
In the following question, an assertion and a reason are given. Choose the correct option:
Assertion: The magnetic field produced by a current-carrying solenoid is independent of its length and cross-section area.
Reason: The magnetic field inside the solenoid is uniform.
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
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.1
b
Q.2
a
Q.3
a
Q.4
d
Q.5
c
Q.6
a
Q.7
d
Q.8
b
Q.9
c
Q.10
b
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 : a | Q.3 : a | Q.4 : d | Q.5 : c | Q.6 : a | Q.7 : d | Q.8 : b | Q.9 : c | Q.10 : b
