Class 9 – Science Extra Questions – Ch. 7 – Motion Q. 1 A person walks 5 meters east and then 5 meters west. What is the total distance traveled by the person? A) 0 meters B) 5 meters C) 10 meters D) The distance cannot be determined Q. 2 The distances covered by a […]
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Class 9 – Science Extra Questions – Ch. 6 – Tissues Q. 1 Which of the following tissues contains proteins responsible for contraction? A) bones B) blood C) muscles D) cartilage Q. 2 What are the cellular components that make up phloem tissue? A) sieve tubes B) companion cells C) both of these D) none
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Class 9 – Science Extra Questions – Ch. 5 – The Fundamental Unit of Life Q. 1 What molecule serves as the cell’s primary energy-carrying unit? A) mitochondria B) ATP C) FAD D) glucose Q. 2 Which of these organisms has a shape that changes or is not fixed? A) Euglena B) Paramecium C) Amoeba
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Class 9 – Science Extra Questions – Ch. 4 – Structure of The Atom Q. 1 How many electrons are in calcium’s outermost electron shell A) 6 B) 8 C) 2 D) 4 Q. 2 What is the valency of oxygen A) 1 B) 2 C) 3 D) 4 Q. 3 Which of the following
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Class 9 – Science Extra Questions – Ch. 3 – Atoms and Molecules Q. 1 Which of the following elements has the chemical symbol Au? A) Aluminum B) Argon C) Gold D) Silver Q. 2 What is the definition of an atom? A) smallest particle of matter known B) smallest particle of a gas C)
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Class 9 – Science Extra Questions – Ch. 2 – Is Matter Around Us Pure Q. 1 A substance that has a uniform composition and properties throughout is called: A) Heterogeneous mixture B) Element C) Compound D) Homogeneous mixture Q. 2 A farmer wants to separate small stones from a large pile of harvested rice.
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Class 9 – Science Extra Questions – Ch. 1 – Matter in Our Surroundings Q. 1 Why does water in an earthen pot stay cool on a summer day? A) condensation B) evaporation C) freezing D) fusion Q. 2 If a gas burner with a small flame continuously provides heat to melt ice, what happens
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Class 10 – Science Extra Questions – Ch. 13 – Our Environment Q. 1 Which of the following is an example of a natural ecosystem? A) Aquarium B) Garden C) Ocean D) Zoo Q. 2 In a typical grassland ecosystem, which organism represents a primary consumer? A) Grass B) Lion C) Rabbit D) Snake Q.
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Common Powers to Memorize for the Exams Powers of 2 n 2ⁿ 1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 1024 Tip: 2¹⁰ ≈ 1000 (handy for approximations) Powers of 3 n 3ⁿ 1 3 2 9 3 27 4 81 5 243 6
Important Squares and Cubes to remember (1 to 30) Number Square (n²) Cube (n³) 1 1 1 2 4 8 3 9 27 4 16 64 5 25 125 6 36 216 7 49 343 8 64 512 9 81 729 10 100 1000 11 121 1331 12 144 1728 13 169 2197 14 196
