Class 9 Chemistry MCQs – Practice Test 1 (Chapter 4)

Periodic Table and Periodicity MCQs with Answers PDF Download – Test 1

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Periodic Table and Periodicity MCQs – Practice Test 1 PDF Download

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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