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Periodic Classification of Elements Science - Periodic Classification of Elements

Maharashtra Board - STD 10 - Science (MSBSHSE - English Medium). 194 questions in this chapter.

Question types

Periodic Classification of Elements question types

194 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

194
Questions
7
Question groups
5
Question types
Sample Questions

Periodic Classification of Elements questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q1 Mark
The element which forms a basis oxide has the atomic number of:
  • A
    $18.$
  • B
    $17.$
  • C
    $14.$
  • ✓
    $19.$

Answer: D.

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Q 2M.C.Q1 Mark
Which of the following is the valence shell for the elements of second period of the modern periodic table?
  • A
    $M$ shell.
  • B
    $K$ shell.
  • ✓
    $L$ shell.
  • D
    $N$ shell.

Answer: C.

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Q 3M.C.Q1 Mark
An element which is an essential constituent of all organic compounds belongs to following group of modern periodic table.
  • A
    Group $4.$
  • ✓
    Group $14.$
  • C
    Group $15.$
  • D
    Group $16.$

Answer: B.

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Q 4M.C.Q1 Mark
The electronic configuration of the atom of an element $X$ is $2, 8, 4$. In modern periodic table, the element $X$ is places in:
  • A
    $2^{nd}$ group.
  • B
    $4^{th}$ group.
  • ✓
    $14^{th}$ group.
  • D
    $8^{th}$ group.

Answer: C.

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Q 5M.C.Q1 Mark
The three imaginary elements $X, Y$ and $Z$ represent a Dobernener's triad. If the atomic mass of element $X$ is $14$ and that of element $Y$ is $46$, then the atomic mass of element $Z$ will be:
  • A
    $28.$
  • B
    $60.$
  • ✓
    $78.$
  • D
    $72.$

Answer: C.

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Q 15Answer the following questions: [2 M]2 Marks
An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom.
  1. N which groups of the periodic table would you expect to find these elements?
  2. What type of bond is formed between A and B?
  3. Suggest a formula of the compound formed between A and B.
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Q 19Answer the following questions: [3 M]3 Marks
The atomic masses of three elements X, Y and Z having similar chemical properties are 7, 23 and 39 respectively.
  1. Calculate the average atomic mass of elements X and Z.
  2. How does the average atomic mass of elements X and Z compare with the atomic mass of element Y?
  3. Which law of classification of elements is illustrated by this example?
  4. What could the elements X, Y and Z be?
  5. Give another example of a set of elements which can be classified according to this law.
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Q 23Answer the following questions: [5 M]5 Marks
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers.
(The letters given here are not the chemical symbols of the elements):
a
3
b
4
 
c
5
d
6
e
7
f
8
g
9
h
10
i
11
j
12
 
k
13
l
14
m
15
n
16
o
17
p
18
  1. Which element has a bigger atom, a or f?
  2. Which element has a higher valency, k or o?
  3. Which element is more metallic, i or k?
  4. Which element is more non-metallic, d or g?
  5. Select a letter which represents a metal of valency 2.
  6. Select a letter which represents a non-metal of valency 2.
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Q 24Answer the following questions: [5 M]5 Marks
Mendeleev predicted the existence of certain elements not known at that time and named two of them as eka - aluminium, and eka - silicon.
  1. Name the element which has taken the place of $(i)$ eka - aluminium, and $(ii)$ eka - silicon.
  2. Mention the period/ periods of these elements in the modern periodic table.
  3. Write the group/ groups of these elements in the modern periodic table.
  4. Classify these elements as metals, non - metals or metalloids.
  5. How many valence electrons are present in the atoms of each of these elements$?​​​​​​$
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Q 25Answer the following questions: [5 M]5 Marks
A part of the early classification of elements has been given below:
$\text{H}\ \ \ \ \ \ \ \text{Li} \ \ \ \ \ \ \ \text{Be} \ \ \ \ \ \ \ \ \ \text{B}\ \ \ \ \ \ \ \text{C}\ \ \ \ \ \ \ \text{N}\ \ \ \ \ \ \ \text{O}\\\text{F}\ \ \ \ \ \ \ \text{Na}\ \ \ \ \ \ \text{Mg}\ \ \ \ \ \ \ \text{Al}\ \ \ \ \ \ \text{Si}\ \ \ \ \ \ \ \text{P}\ \ \ \ \ \ \ \ \text{S}$
  1. Which law of classification of element is illustrated by the above arrangement of elements?
  2. Name the scientist who proposed such a classification of elements.
  3. Why is such a classification of elements compared with a characteristics of musical scale?
  4. State one limitation of this classification of elements.
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Q 31Case study.4 Marks
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
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Q 32Case study.4 Marks
State whether the following statements are true or false:
According to Mendeleev’s periodic law, the properties of elements are a periodic function of their atomic numbers.
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Q 34Case study.4 Marks
State whether the following statements are true or false:
Newlands divided the elements into horizontal rows of eight elements each.
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