RRB NTPC 2026 · Question 17 of 93
The correct postulate of Dalton's atomic theory that aligns with the law of conservation of mass is (c)Atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction. Explanation: · The law of conservation of mass states that in a closed system, the total mass of the reactants must equal the total mass of the products during a chemical reaction. · Dalton's postulate (c) suggests that atoms are fundamental units that neither disappear nor come into existence during a reaction. They simply rearrange to form new products. While the other postulates are also part of Dalton's theory, they don't directly address the concept of mass being conserved in chemical reactions.
Source: RRB NTPC CBT-I Memory-Based Paper 16 March 2026 S1 (careerpower test-platform compilation) · memory-based
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