NCERT Class 10 Science-Periodic Classification of Elements[Mendeleev's Periodic Table] [NCERT Based General Studies (GS)]: Questions 1 - 5 of 5

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Question 1

Question MCQ▾

What contradicted Mendeleev՚s periodic law:

Choices

Choice (4)Response

a.

Inversion in the periodic table

b.

Reverse order of atomic masses

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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Question 2

Question MCQ▾

Essential features of Mendeleev՚s periodic table are:

Choices

Choice (4)Response

a.

Eight groups and seven periods

b.

Group valency is equal to the group number

c.

Properties of elements changed gradually in any period while going from left to right

d.

All a., b. and c. are correct

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Question 3

Question MCQ▾

Mendeleev՚s periodic law states that:

Choices

Choice (4)Response

a.

Mendeleev՚s named the yet undiscovered elements by prefixing a Sanskrit numerals

b.

Mendeleev՚s periodic table did not include the noble gases.

c.

Properties of the elements are a periodic function of their atomic masses

d.

All of the above

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Question 4

Question MCQ▾

Position of isotopes in periodic table is:

Choices

Choice (4)Response

a.

Placed in separate groups

b.

Given separate places

c.

Grouped together

d.

All of the above

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Question 5

Question MCQ▾

Position of hydrogen in the Mendeleev՚s periodic table is:

Choices

Choice (4)Response

a.

Group VII

b.

Group 1

c.

None of the above

d.

All of the above

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