New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    What was the achievement of Dobereiner’s

    triads?
    A First attempt to study the size of atoms. Correct Answer Incorrect Answer
    B First attempt to relate the properties of elements with atomic mass. Correct Answer Incorrect Answer
    C First attempt to study the colour of elements. Correct Answer Incorrect Answer
    D First attempt to study the atomicity of molecules. Correct Answer Incorrect Answer

    Solution

    The correct answer is B

    Practice Next

    Relevant for Exams: