NDA CHEMISTRY QUIZ

Question 1:

What were the limitations of Newland Law of octaves ?

It is applicable upto calcium
He adjusted two elements in one slot
He left gaps for the elements which may get discover in future
It was applicable only for heavier elements

Only 1

Both 1 and 2

1,2,3

1,2,3,4

Question 2:

Newland law of octaves is applicable upto

Magnesium

Calcium

Sodium

Potassium

Question 3:

Two elements A and B are present in same group of Newland’s periodic table. Number of elements present in between A and B are

5

6

7

8

Question 4:

Directions – Question consist of two statements labelled as statement I and statement II . Examine both the statement and mark the correct choice according to the codes given below

Statement I –Newland arranged elements according to the increasing atomic mass

Statement II – At the time of Newland only 63 elements were known .

Both statement I and statement II are true and Statement II is the correct explanation of Statement I

Both statement I and statement II are true and Statement II is not the correct explanation of Statement I

Statement I is true , but statement II is false

Statement I is false , but II is true

Question 5:

In Newland law of octaves ,

Every fifth element is similar to the first element .

Every eighth element is similar to the second element .

Every eighth element is similar to the third element .

Every eighth element is similar to the first element .

Question 6:

As per dobereiner traid , (atomic mass of calcium and barium is 30 g/mol and 137 g/mol respectively ) atomic mass of strontium is

88.5

98.5

78.5

65.5

Question 7:

Placing elements together in the groups or periods is essential as it helps in

Understanding the physical properties of elements

Understanding the chemical properties of elements

Both 1 and 2

Neither 1 nor 2

Question 8:

In Newland law of octaves , elements are arranged according to the

decreasing order of atomic number

increasing order of atomic mass

decreasing order of atomic mass

increasing order of atomic number

Question 9:

Newland gave law of octaves and Dobereiner gave-

Triads

Groups

Periods

Elements

Question 10:

Which of the following is correct Dobereiner traid ?

Li , Na , Ca

Ca , Sr , Ba

Cl , F , I

Li , Ca , Cl

NDA CHEMISTRY QUIZ - 17

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NDA CHEMISTRY QUIZ - 17

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