![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/blue-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/purple-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/fade_circle.png)
ICSE /Class 9
Chemistry MCQ Based On Contributors to periodic law old
Our free online Chemistry test quiz for Class 9, ICSE will assist you to improve your Chemistry skills on every concept in a fun interactive way.
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/blue-glossy.png)
![glossy](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/illustrations/fade_circle.png)
![test-your-knowledge](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/test_your_knowledge/laptop_testyourknowledge.png)
Happy students
![img](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/subject/awesome-classes.png)
Awesome classes
ICSE Class 9 Chemistry Contributors to periodic law old
|
View Hints
Atomic number 37
View Hints
Boron and Silicon
View Hints
Because their placement in the periodic table is due to their electronic configuration.
View Hints
Atomic number 21
View Hints
6+1
View Hints
15+2
View Hints
Atomic number 2
View Hints
Atomic Number 3
View Hints
Atomic Number 3
View Hints
Boron
![](https://justtutors-cdn.azureedge.net/prod-resource/MasterData/inner_assets/assets/img/test_your_knowledge/banner.png)
At JustTutors, we believe in the power of digital technology to help students get personalized learning and attention from India's best-in-class science, english and math tutors. We are focused on creating a top-class e-learning platform that brings together the best teachers, technology, media, content for creating a seamless and world-class experience for every student.
![Justie](https://www.justtutors.com/assets/images/chatbot_justie.gif)