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
Which of the following metals cannot be refined by electrolytic refining?
(i) Au (ii) Cu (iii) Na (iv) K
Q.2
What happens when 1 mole of ethyne undergoes complete combustion?
Q.3
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.4
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.5
In the following question, an assertion and the reason are given. Choose the correct option:
Assertion (A): In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group. Reason (R): In a group, the atomic radii generally increase from top to bottom.
Q.6
Refer to the given diagram and select the incorrect option regarding X and Y:
Q.7
It is possible to measure the passage of 50 electrons per sec with a certain sensitive device. This corresponds to a current of:
Q.8
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.9
Olivia measured the focal length of a convex lens by focusing a parallel beam of yellow, violet and green colours at the principal axis. If fy, fv and fg are the respective focal lengths, then which among the following is the correct relation?
Q.10
Length and diameters of four wires of same material are given below. The resistance of which of the following wires will be minimum?
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
d
Q.2
c
Q.3
b
Q.4
a
Q.5
d
Q.6
a
Q.7
a
Q.8
a
Q.9
b
Q.10
c
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 : d | Q.2 : c | Q.3 : b | Q.4 : a | Q.5 : d | Q.6 : a | Q.7 : a | Q.8 : a | Q.9 : b | Q.10 : c
