Periodic Classification of Elements

Bihar Board Class 10 · Science · 18 past questions

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1. Q4 2025

   Which was a defect of Mendeleev's periodic table ?

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2. Q5 2025

   Who among the following propounded the laws of octave ?

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3. Q6 2025

   Which of the following compounds would be the most basic ?

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4. Q7 2025

   Magnesium is a member of which group of the periodic table ?

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5. Q8 2025

   How many periods are there in the periodic table ?

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