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The first atomic theory was put forward by
(b) John Dalton put forward the first atomic theory. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(b) John Dalton put forward the first atomic theory.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessThe relative mass of a molecule is expressed in
(c) Relative mass of a molecule is expressed in atomic mass units. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(c) Relative mass of a molecule is expressed in atomic mass units.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessMass can neither be created nor destroyed in a chemical reaction. This is the statement of a law called
(c) Law of conservation of mass is the correct answer. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(c) Law of conservation of mass is the correct answer.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessThe correct way of writing the symbol of aluminium is
(d) Al is the correct symbol for aluminium. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(d) Al is the correct symbol for aluminium.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessAccording to Greek philosophers, the smallest particle of matter that could not be further subdivided was called
(b) Atom was the smallest particle of matter according to Greek philosophers. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(b) Atom was the smallest particle of matter according to Greek philosophers.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
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