MEDIUM
10th CBSE
IMPORTANT
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Do you think that Dobereiner's triads existed in the columns of Newlands' law of octaves? (Yes/ No)

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Important Questions on Periodic Classification of Elements

EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 1
Define periodic table.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 2
How many elements were known when Mendeleev gave his periodic table? 56/ 63/ 118
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 3
State Mendeleev's periodic law.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 4
What were the criteria used by Mendeleev to classify elements?
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 5
What were the chemical properties used by Mendeleev in creating his periodic table?
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 6
Which group was missing from Mendeleev's original periodic table?
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 7
Name the elements for which Mendeleev had left gaps in his periodic table.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 5 - Periodic Classification of Elements>PAPER - PEN TEST : 2>Q 8
Why Mendeleev did not mention about inert gases?