NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Chemistry
- Chapter
- Chapter
NEET 2026 · Chemistry · Chapter
Which of the following postulates of Dalton's atomic theory...
Which of the following postulates of Dalton's atomic theory provides the direct theoretical basis for the law of conservation of mass?
Options
- AMatter consists of indivisible atoms.
- BAtoms of different elements combine in fixed, simple whole number ratios to form compounds.
- CAtoms can neither be created nor destroyed in a chemical reaction.
- DAll atoms of a given element have identical properties, including identical mass.
Correct answer
C. Atoms can neither be created nor destroyed in a chemical reaction.
Step-by-step solution
The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction.
According to Dalton's atomic theory, atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction. This postulate provides the direct theoretical basis for the law of conservation of mass, as the total number of atoms of each element remains constant before and after the reaction, ensuring the total mass remains unchanged.
Answer: Atoms can neither be created nor destroyed in a chemical reaction.
According to Dalton's atomic theory, atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction. This postulate provides the direct theoretical basis for the law of conservation of mass, as the total number of atoms of each element remains constant before and after the reaction, ensuring the total mass remains unchanged.
Answer: Atoms can neither be created nor destroyed in a chemical reaction.