Two substances A and B were made to react to form a third substance A₂B according to the following reaction: 2A + B → A₂B Which of the following statements concerning this reaction are incorrect? (i) The product A₂B shows the properties of the substances A and B. (ii) The product will always have a fixed composition. (iii) The product so formed cannot be classified as a compound. (iv) The product so formed is an element. (a) (i), (ii) and (iii) (b) (i), (ii) and (iv) (c) (i), (iii) and (iv) (d) (ii), (iii) and (iv)
(c) Only the statement (ii) that the product will always have a fixed composition.
https://www.tiwariacademy.com/ncert-solutions-class-9-science-curiosity-chapter-2/
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The correct answer is: (c) (i), (iii), and (iv)
(i) Incorrect – The product A₂B is a new substance with different properties from A and B.
(ii) Correct – Compounds always have a fixed composition.
(iii) Incorrect – A₂B is a compound because it is formed by the chemical combination of A and B.
(iv) Incorrect – A compound is different from an element; A₂B is not an element.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/