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Periodic Classification - 2 (Class X)

Periodic Classification - 2

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The numbers of groups and periods present in the modern periodic table are ____ and ____, respectively.

  1. 16, 7
  2. 6, 16
  3. 18, 7
  4. 18, 6
Question 2 Multiple Choice (Single Answer)

Which of the following represents the correct order of electronegativities?

  1. P > O > N
  2. N > P > O
  3. O > N > P
  4. N > O > P
Question 3 Multiple Choice (Single Answer)

Arrange the following set of atoms in order of increasing atomic radius:

F, Br, Cl, I

  1. I, F, Br, Cl
  2. F, Cl, Br, I
  3. F, I, Br, Cl
  4. Cl, Br, I, F
Question 4 Multiple Choice (Single Answer)

Which of the following elements will be present in the shortest period?

  1. Hydrogen and lithium
  2. Hydrogen and helium
  3. Lithium and helium
  4. Beryllium and helium
Question 5 Multiple Choice (Single Answer)

On moving down a group, the number of electrons in the outermost shell

  1. increases
  2. decreases
  3. remains the same
  4. varies
Question 6 Multiple Choice (Single Answer)

Which of the following elements were placed correctly in Mendeleev’s periodic table?

  1. Argon and potassium
  2. Cobalt and nickel
  3. Tillerium and iodine
  4. Oxygen and fluorine
Question 7 Multiple Choice (Single Answer)

What is the cause of periodicity in properties of elements?

  1. Recurrence of similar electronic configuration
  2. Recurrence of similar atomic size
  3. Recurrence of similar atomic weight
  4. Recurrence of similar physical character
Question 8 Multiple Choice (Single Answer)

Which of the following is a drawback in Mendeleev’s periodic table?

  1. Gaps were left in between the periodic table
  2. Properties of elements were considered periodic function of their atomic masses
  3. Position of hydrogen in the periodic table
  4. Consideration of only 63 elements
Question 9 Multiple Choice (Single Answer)

Which of the following has the highest number of shells in its atom?

  1. Na
  2. Al
  3. Ca
  4. Ar
Question 10 Multiple Choice (Single Answer)

Which of the following orders is correct regarding valency of the elements with respect to hydrogen?

  1. Li < Be < C < N
  2. N < C < Be < Li
  3. Hi < Be < N < C
  4. C < N < Be < Hi
Question 11 Multiple Choice (Single Answer)

To which period does an element with atomic number 13 belong?

  1. Second period
  2. Third period
  3. Fourth period
  4. Fifth period
Question 12 Multiple Choice (Single Answer)

Which of the following statements is true for elements belonging to group II?

  1. They have the same atomic size.
  2. They have the same metallic character.
  3. They have the same number of valence electrons.
  4. They have the same number of electronic shells.
Question 13 Multiple Choice (Single Answer)

Properties of hydrogen can be related to which of the following elements?

  1. Na and F
  2. Li and Mg
  3. K and Ca
  4. Cl and Al
Question 14 Multiple Choice (Single Answer)

Which of the following is the correct order of atomic size of the elements?

  1. Be < Ca < Mg
  2. Be < Mg < Ca
  3. Ca < Mg < Be
  4. Mg < Ca < Be
Question 15 Multiple Choice (Single Answer)

Which of the following statements regarding hydrogen is wrong?

  1. Hydrogen has three isotopes.
  2. Hydrogen may be prepared by the action of hot 20% NaOH on silicon.
  3. Nascent hydrogen reduces ferric chloride to ferrous chloride.
  4. Hydrogen gas is corrosive in nature.
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