NCERT Solutions of Periodic Classification of Elements Class 10
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Periodic Classification of Elements (CBSE NCERT)

Exemplar Problem (NCERT) and Solution

Multiple Choice Questions - Part - 3

Question: 21. Which of the following elements will form an acidic oxide?

(a) An element with atomic number 7

(b) An element with atomic number 3

(c) An element with atomic number 12

(d) An element with atomic number 19

Answer: (a) An element with atomic number 7

Question: 22. The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

(a) Metal

(b) Metalloid

(c) Non-metal

(d) Left-hand side element

Answer: (b) Metalloid

Question: 23. Which one of the following depicts the correct representation of atomic radius(r) of an atom?

periodic classification of elements tenth standard exemplar problem and solution cbse ncert usa uk australia singapore

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv)

Answer: (b) (ii) and (iii)

Question: 24. Which one of the following does not increase while moving down the group of the periodic table?

(a) Atomic radius

(b) Metallic character

(c) Valence

(d) Number of shells in an element

Answer: (c) Valence

Question: 25. On moving from left to right in a period in the periodic table, the size of the atom.

(a) Increases

(b) Decreases

(c) does not change appreciably

(d) first decreases and then increases

Answer: (b) Decreases

Question: 26. Which of the following set of elements is written in order of their increasing metallic character?

(a) Be Mg Ca

(b) Na Li K

(c) Mg Al Si

(d) C O N

Answer: (a) Be Mg Ca

  NCERT Solutions of Periodic Classification of Elements Class 10
<< Exemplar Problem & Solution (NCERT) - Part 2 Nutrition >>

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