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10th CBSE
IMPORTANT
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Mendeleev's periodic table is based on the

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Important Questions on Periodic Classification of Elements

MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 29
Which of the following is not an inert gas?
MEDIUM
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 30
When we move from left to right across a period, the electron affinity
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10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 31
Which element still has dicey position in modern periodic table?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 32
Modern periodic table is based on
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10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 33
The law of triads is not applicable on
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 34
Which of the following elements is a semi-metal?
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 35
As we move from left to right in a period in modern periodic table, atomic sizes of the elements generally 
EASY
10th CBSE
IMPORTANT
PRACHI SCIENCE CHEMISTRY CLASS-X>Chapter 5 - Periodic Classification of Elements>SUMMATIVE ASSESSMENT MOCK TEST>Q 36
As we move from top to bottom in a group in modern periodic table, generally atomic size of elements