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The Periodic Table — Practice Quiz

ICSE · Class 9 · Chemistry

Try a 4-question quiz on The Periodic Table for ICSE Class 9 Chemistry: tap an answer to check it and see why. 44 questions in the full chapter test.

44 questions48 flashcards5 concepts

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An infographic explaining the historical need and benefits of classifying elements, such as ease of study, prediction of properties, and systematic organization.
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Quick Quiz: The Periodic Table

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Tap an answer to check it instantly. No sign-up needed for these 4.

1

Who proposed the law of triads?

2

In Dobereiner's triad of calcium, strontium, and barium, which element is in the middle?

3

According to Newland's law of octaves, every ________ element has similar properties.

4

The modern periodic law is based on:

44 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following are defects of Mendeleev's periodic table?

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Position of isotopes, Anomalous pairs, Position of hydrogen

The main defects were: isotopes should have different positions due to different masses, some elements were placed incorrectly (like Ar before K), and hydrogen's position was unclear. Prediction of elements and grouping were actually merits.

2multiple choice

How many groups are there in the modern periodic table?

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18

The modern periodic table has 18 vertical columns called groups, numbered from 1 to 18 according to IUPAC recommendations.

3multiple correct

Which of the following are alkali metals?

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Lithium, Sodium, Potassium

Alkali metals are Group 1 elements: Li, Na, K, Rb, Cs, and Fr. They have one electron in their outermost shell. Mg and Ca are alkaline earth metals (Group 2).

4multiple choice

The valency of Group 17 elements is:

Show answer

1

Group 17 elements (halogens) have 7 electrons in their outermost shell, so they need 1 more electron to complete their octet. Therefore, their valency is 1.

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Frequently Asked Questions

What are the important topics in The Periodic Table for ICSE Class 9 Chemistry?
Key topics in The Periodic Table include Need for Classification and Early Attempts, Dobereiner's Triads, Newland's Law of Octaves, Mendeleev's Periodic Table. Study these first, then practise questions on each for Class 9 exams.
How many practice questions are there for The Periodic Table?
There are 44 questions on The Periodic Table. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

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