Class 9 Chemistry MCQs - Chapter 4

Periodic Table and Periodicity Multiple Choice Questions (MCQs) PDF Download - 1

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The Multiple Choice Question (MCQ Quiz): Both elements of 1st period contain valence electrons in; "Periodic Table and Periodicity" App Download (Free) with answers n shell, m shell, k shell and s shell to learn online classes courses. Solve periodic table quiz questions, download Google eBook (Free Sample) for online education.

Periodic Table and Periodicity Questions & Answers PDF Download: MCQ Quiz 1

MCQ 1: Both elements of 1st period contain valence electrons in

M shell
N shell
K shell
S shell

MCQ 2: In the periodic table, helium is placed at

top left corner
bottom right corner
bottom left corner
top right corner

MCQ 3: Across the period the atomic size decreases due to

shielding effect
photoelectric effect
increase in nuclear force of attraction
decrease in nuclear force of attraction

MCQ 4: The first three periods are

long periods
short periods
moderate periods
all of above

MCQ 5: On basis of electronic configuration the group and period of ⁹₅B is

2 and IIIA
3 and IIA
4 and VIA
5 and VIIA

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