1:   If an element is present in third group of periodic table, then its outermost orbits contain ----electrons.
Options:
  1. 1
  2. 0
  3. 2
  4. 3

Answer: Option 4

Explanation:

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2:   The repetition in properties of elements in an order is called -------of elements
Options:
  1. frequency
  2. periodicity
  3. resonance
  4. none of these

Answer: Option 2

Explanation:

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3:   Law of Octaves was proposed by
Options:
  1. Mendeleev
  2. Newland
  3. Bohr
  4. Niel

Answer: Option 2

Explanation:

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4:   In the periodic table horizontal rows are called
Options:
  1. periods
  2. groups
  3. rod
  4. none of these

Answer: Option 1

Explanation:

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5:   In the periodic table vertical columns are called
Options:
  1. periods
  2. groups
  3. rod
  4. none of these

Answer: Option 2

Explanation:

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6:   Newland stated that if elements are kept in the increasing order their atomic mass, then each --------elements represent similarity in properties with the first element.
Options:
  1. eight
  2. seven
  3. six
  4. nine

Answer: Option 1

Explanation:

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7:   Carbon is an element of -----------group
Options:
  1. first
  2. third
  3. fourth
  4. fifth

Answer: Option 3

Explanation:

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8:   In modern periodic table, there are --------- periods.
Options:
  1. 7
  2. 18
  3. 9
  4. 8

Answer: Option 1

Explanation:

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9:   In modern periodic table, there are --------- columns.
Options:
  1. 7
  2. 18
  3. 9
  4. 8

Answer: Option 2

Explanation:

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10:   Similarity in properties of Li and Mg, Be and Al is due to -------- relationship.
Options:
  1. horizontal
  2. vertical
  3. diagonal
  4. none of these

Answer: Option 3

Explanation:

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