MEDIUM
10th CBSE
IMPORTANT
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Which of the following is the least reactive element?

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Important Questions on Periodic Classification of Elements (The Periodic Table)

HARD
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 15
Which one is most reactive element?
MEDIUM
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 16
Which oxide is more basic?
MEDIUM
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 17
Atomic number is the fundamental property of an element. Write the name of the scientist who proposed it.
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 18
What is the atomic number of the element of period 2 and group 17 of the periodic table.
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 19
Which of the following pairs of elements are members of the same group?
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 20
Which one of the following is a noble gas?
MEDIUM
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 21
Which one of the following elements is an alkali metal?
MEDIUM
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 22
The total number of elements in period 3 of the periodic table is