Class 10 Science Periodic Classification Of Elements? CBSE Questions & Answers

Class 10 · Science Periodic Classification Of Elements?

This is Science class 10 Science Periodic Classification of Elements? CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Match the following with correct response. (1) Alkali metals (2) Alkaline earth metal (3) Halogen (4) Inert gas (A) Magnesium (B) Krypton (C) chlorine (D) Sodium
  • A
    1-D, 2-A, 3-C, 4-B
    Correct
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-C, 2-B, 3-D, 4-A
  • D
    1-B, 2-D, 3-A, 4-C
2
Match the following with correct response. (1) Dobereiner (2) Newland (3) Mendeleev (4) Modern Periodic law (A) Atomic mass (B) Triads (C) Atomic number (D) Octaves
  • A
    1-B, 2-D, 3-A, 4-C
    Correct
  • B
    1-C, 2-B, 3-D, 4-A
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-D, 2-A, 3-C, 4-B
3
Match the following with correct response. (1) Short Period (2) Third Period (3) Fifth Period (4) Sixth Period (A) 32 elements (B) 8 elements (C) 2 elements (D) 18 Elements
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-C, 2-B, 3-D, 4-A
    Correct
  • C
    1-A, 2-C, 3-B, 4-D
  • D
    1-B, 2-D, 3-A, 4-C
4
Match the following with correct response. (1) Periods (2) Groups (3) Eight groups (4) Eighteen groups (A) Vertical rows (B) Mendeleev?s Periodic table (C) Horizontal rows (D) Modern periodic table
  • A
    1-C, 2-B, 3-D, 4-A
  • B
    1-A, 2-C, 3-B, 4-D
    Correct
  • C
    1-D, 2-A, 3-C, 4-B
  • D
    1-B, 2-D, 3-A, 4-C
5
Match the following with correct response. (1) Valency (2) In groups (3) In Period (4) Elements on the left hand side (A) Valency remains same (B) Non metals (C) Atomic size decreases (D) Combining capacity
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-D, 2-A, 3-C, 4-B
    Correct
  • D
    1-C, 2-B, 3-D, 4-A
6
Match the following with correct response. (1) An element belongs to group 13 and 3 period (2) Eka silicon (3)Atomic number 31 (4) An element constitution of chlorophyll (A) Gallium (B) Aluminium (C) magnesium (D) Germanium
  • A
    1-D, 2-A, 3-C, 4-B
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-B, 2-D, 3-A, 4-C
    Correct
  • D
    1-C, 2-B, 3-D, 4-A
7
Match the following with correct response. (1) The most electronegative element (2) The most electropositive element (3) Element belonging to noble gas family (4) Element constitute large member of organic compounds (A) Carbon (B) Lithium (C) Fluorine (D) Neon
  • A
    1-C, 2-B, 3-D, 4-A
    Correct
  • B
    1-A, 2-C, 3-B, 4-D
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-D, 2-A, 3-C, 4-B
8
Match the following with correct response. (1) Element with 2 valence electrons (2) Element with completely filled outer most shell /br>(3) Element with I valence electron (4) Element without neutrons (A) Calcium (B) Potassium (C) Neon (D) Hydrogen
  • A
    1-C, 2-B, 3-D, 4-A
  • B
    1-D, 2-A, 3-C, 4-B
  • C
    1-B, 2-D, 3-A, 4-C
  • D
    1-A, 2-C, 3-B, 4-D
    Correct
9
Match the following with correct response. (1) Ionization energy in groups (2) Atomic size in groups (3) Metals (4) Non-metals (A) Increases (B) Electronegative (C) Electropositive (D) Decreases
  • A
    1-B, 2-D, 3-A, 4-C
  • B
    1-D, 2-A, 3-C, 4-B
    Correct
  • C
    1-C, 2-B, 3-D, 4-A
  • D
    1-A, 2-C, 3-B, 4-D
10
Which is true about noble gases?A. The do not react with other elements B. They have completely filled outer most shells C. Xenon is most reactive noble gasD. Most of the them are radioactive
  • A
    All of these
  • B
    B and C
  • C
    A and B
    Correct
  • D
    A, B and D
11
Which of the following is isoelectric with \({O^{2 - }}\)A. \({N^{3 - }}\) B. \(N{a^ + }\) C. \({F^ - }\) D. \(T{i^ + }\)
  • A
    A and C
  • B
    All of these
  • C
    B and C
  • D
    A, B and C
    Correct
12
Which of following statement is correct about isotopes?A. Isotopes of an element have same atomic masses B. Isotopes of an element have same atomic number C. Isotopes of an element have same chemical properties D. isotopes of and element have different atomic numbers
  • A
    A and B
  • B
    A and C
  • C
    B and C
    Correct
  • D
    All of these
13
Which of the following is an example of Dobereiner?s triad?A. Li, Na, K B. Cl, Br, I C. Na, Mg, Al.D. F, I, Br
  • A
    A and B
    Correct
  • B
    C and D
  • C
    A and C
  • D
    All of these
14
Which of the pairs of elements are members of the same group A. Na and K B. Ar and ClC. Si and Ca D. O and S
  • A
    A and C
    Correct
  • B
    B and C
  • C
    All of these
  • D
    A and D
15
Which of following statements is not true about hydrogen?A. Oxides of hydrogen is neutral B. it is placed in group 1 and Period 1C. It is a metal D. It has 1 electron, Proton and neutron
  • A
    C and D
    Correct
  • B
    All of these
  • C
    A and C
  • D
    B and C