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Questions and Answers
Which scientist is credited with inventing the periodic table of elements?
Which scientist is credited with inventing the periodic table of elements?
- Mendeleev (correct)
- Dobereiner
- Rutherford
- Bohr
What is the significance of Mendeleev's periodic table in terms of atomic masses?
What is the significance of Mendeleev's periodic table in terms of atomic masses?
- It accurately predicted the atomic masses of all known elements.
- It reordered elements solely based on their atomic masses.
- It revealed some vacant places where atomic masses were predicted for unknown elements. (correct)
- It showed a clear correlation between atomic masses and chemical properties.
What do the molecular formulas like R2O, R2O3, etc., represent in Mendeleev's periodic table?
What do the molecular formulas like R2O, R2O3, etc., represent in Mendeleev's periodic table?
- Predicted atomic masses of unknown elements (correct)
- Groupings based on atomic masses
- Element categories based on reactivity
- Atomic numbers of elements
Which element group is represented by RH4, RO2, and RH3 in Mendeleev's periodic table?
Which element group is represented by RH4, RO2, and RH3 in Mendeleev's periodic table?
Which scientist is associated with the concept of Dobereiner's triads?
Which scientist is associated with the concept of Dobereiner's triads?
What is the characteristic property of the eighth element in a triad according to Dobereiner's concept?
What is the characteristic property of the eighth element in a triad according to Dobereiner's concept?
What is the atomic number of an element with electron configuration 2,8,2?
What is the atomic number of an element with electron configuration 2,8,2?
Which block of the modern periodic table are nonmetals typically found in?
Which block of the modern periodic table are nonmetals typically found in?
What was the basis of Dobereiner's classification of elements into triads?
What was the basis of Dobereiner's classification of elements into triads?
How did Dobereiner arrange the three elements in a triad?
How did Dobereiner arrange the three elements in a triad?
Why were all the known elements not able to be classified into Dobereiner's triads?
Why were all the known elements not able to be classified into Dobereiner's triads?
From the given groups of elements, which group can be identified as a Dobereiner's triad?
From the given groups of elements, which group can be identified as a Dobereiner's triad?
How can the history of philosophy be useful in understanding ideologies?
How can the history of philosophy be useful in understanding ideologies?
Why is knowledge of the history of language valuable in understanding philosophy?
Why is knowledge of the history of language valuable in understanding philosophy?
What drives scientific discoveries and inventions?
What drives scientific discoveries and inventions?
What does the history of science help in understanding?
What does the history of science help in understanding?
What is another name for 'Applied History' as mentioned in the text?
What is another name for 'Applied History' as mentioned in the text?
How does 'Public History' help overcome misconceptions about the usefulness of studying history?
How does 'Public History' help overcome misconceptions about the usefulness of studying history?
Which institute mentioned in the text has an independent department named 'Centre for Public History'?
Which institute mentioned in the text has an independent department named 'Centre for Public History'?
What does 'Applied History' focus on according to the text?
What does 'Applied History' focus on according to the text?
What is one of the key roles of applied history in public training programmes?
What is one of the key roles of applied history in public training programmes?
Which professionals are mentioned as necessary for projects in the field of applied history?
Which professionals are mentioned as necessary for projects in the field of applied history?
What is the purpose of establishing a centre for dissemination of 'films culture' as mentioned in the text?
What is the purpose of establishing a centre for dissemination of 'films culture' as mentioned in the text?
Which experts are NOT mentioned as required for various fields related to applied history?
Which experts are NOT mentioned as required for various fields related to applied history?
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