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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 |
A convex mirror of focal length f produces an image 1/nth of the size of the object. Calculate the distance of the object from the mirror: |
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Q.2 |
Identify the phenomenon by which a new set of the population is formed from the change in the frequency of some genes: |
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Q.3 |
Which of the following metals cannot be refined by electrolytic refining? (i) Au |
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Q.4 |
What happens when 1 mole of ethyne undergoes complete combustion? |
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Q.5 |
In the following question, an assertion and a reason are given. Choose the correct option: Assertion: In a simple electric circuit, the positive terminal of the battery is a point of lowest potential. Reason: The electronic current flow in a circuit is from a point of highest potential to a point of lowest potential. |
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Q.6 |
Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance? |
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Q.7 |
Identify the correct sequence of fractions obtained when petroleum is subjected to fractional distillation:
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Q.8 |
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? |
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Q.9 |
Choose the correct option and complete the following sentence: Sexual reproduction causes genetic variation because of _____________.
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Q.10 |
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. |
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Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1 : c | Q.2 : a | Q.3 : d | Q.4 : c | Q.5 : c | Q.6 : b | Q.7 : c | Q.8 : d | Q.9 : d | Q.10 : a