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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 |
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? |
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Q.2 |
Fill in the blank: Neutral water with pH of about 7 becomes slightly acidic when aerated. This is because ________________. |
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Q.3 |
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: |
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Q.4 |
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. |
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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 ____________. |
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Q.6 |
Arrange the following in the increasing order of ease of oxidation: (A) SO4-2 (B) F-1 (C) Br-1 (D) OH- |
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Q.7 |
If I1 is the first ionization potential, I2 is the second ionization potential, I3 is the third ionization potential and I4 is the fourth ionization potential of an element, then which of the following has the least value? |
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Q.8 |
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. |
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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 |
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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Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1 : b | Q.2 : d | Q.3 : b | Q.4 : b | Q.5 : c | Q.6 : d | Q.7 : a | Q.8 : a | Q.9 : d | Q.10 : b